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Kuwait MOH Anesthesia Technician study materials
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Kuwait MOH Anesthesia Technician practice questions

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Question 1Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

During direct laryngoscopy, which structure must the blade elevate to expose the vocal cords for endotracheal tube passage?

  1. The arytenoid cartilage
  2. The hyoid bone
  3. The cricoid cartilage
  4. The epiglottis Correct answer.

Explanation

The curved (Macintosh) blade is placed in the vallecula and lifts the epiglottis forward, while a straight (Miller) blade directly lifts the epiglottis; either way, moving the epiglottis anteriorly reveals the glottic opening. The arytenoids, hyoid and cricoid are not the structure being displaced to expose the cords.

Question 2Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

A patient is being ventilated through a supraglottic airway. Which anatomical structure primarily prevents aspiration by separating the respiratory and digestive tracts during swallowing?

  1. The uvula
  2. The soft palate
  3. The epiglottis Correct answer.
  4. The false vocal folds

Explanation

During swallowing the epiglottis folds posteriorly over the laryngeal inlet, directing the bolus into the esophagus and protecting the airway. The soft palate, uvula and false cords assist in other functions but do not provide this primary seal.

Question 3Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which nerve supplies the cricothyroid muscle, the only intrinsic laryngeal muscle that tenses the vocal cords?

  1. The external branch of the superior laryngeal nerve Correct answer.
  2. The glossopharyngeal nerve
  3. The recurrent laryngeal nerve
  4. The internal branch of the superior laryngeal nerve

Explanation

The external branch of the superior laryngeal nerve is motor to the cricothyroid, which tenses and lengthens the vocal cords. The recurrent laryngeal nerve supplies all other intrinsic muscles, and the internal branch of the superior laryngeal nerve is sensory to the supraglottis.

Question 4Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

In a spontaneously breathing adult, which change best describes the normal effect of moving from the supine to the sitting position on functional residual capacity?

  1. Functional residual capacity increases Correct answer.
  2. Functional residual capacity is unchanged
  3. Functional residual capacity first falls then returns to baseline
  4. Functional residual capacity decreases

Explanation

Sitting upright allows the diaphragm to descend and reduces abdominal pressure on it, so functional residual capacity rises compared with the supine position. This is why preoxygenation is more efficient in the sitting position in obese patients.

Question 5Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which statement correctly describes the shape of the oxyhemoglobin dissociation curve and its clinical implication?

  1. It is linear at high partial pressures and flat at low partial pressures
  2. It is sigmoid, so saturation is maintained at high levels until partial pressure falls substantially Correct answer.
  3. It is hyperbolic, so saturation rises steeply at low partial pressures
  4. It is a straight line, so saturation falls proportionally with oxygen partial pressure

Explanation

The oxyhemoglobin dissociation curve is sigmoid because of cooperative binding among hemoglobin subunits. The flat upper portion means saturation stays high despite moderate falls in arterial oxygen partial pressure, giving a safety margin, while the steep lower portion favors unloading in tissues.

Question 6Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

A patient's arterial blood gas shows pH 7.28, PaCO2 58 mmHg and bicarbonate 26 mmol/L. Which acid-base disturbance is present?

  1. Metabolic acidosis
  2. Respiratory acidosis Correct answer.
  3. Metabolic alkalosis
  4. Respiratory alkalosis

Explanation

A low pH with an elevated PaCO2 indicates respiratory acidosis; the near-normal bicarbonate suggests it is acute rather than compensated. Metabolic acidosis would show a low bicarbonate, and alkalosis would show a high pH.

Question 7Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which formula correctly defines cardiac output?

  1. Cardiac output = stroke volume × heart rate Correct answer.
  2. Cardiac output = mean arterial pressure × heart rate
  3. Cardiac output = stroke volume ÷ heart rate
  4. Cardiac output = systemic vascular resistance × heart rate

Explanation

Cardiac output is the volume ejected per minute, calculated as stroke volume multiplied by heart rate. Dividing stroke volume by heart rate would give a meaningless value, and pressure or resistance terms do not enter this definition.

Question 8Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which mechanism best explains why a small dose of a highly lipid-soluble volatile anesthetic produces rapid induction compared with a less soluble agent?

  1. Higher blood solubility allows the blood to carry more agent to the brain
  2. Higher minimum alveolar concentration allows faster onset
  3. Lower vapor pressure allows faster equilibration with brain tissue
  4. Lower blood solubility allows alveolar partial pressure to rise quickly toward inspired tension Correct answer.

Explanation

Agents with low blood:gas solubility require less agent to saturate the blood, so the alveolar partial pressure rises rapidly toward the inspired value and brain equilibration is fast. High solubility acts as a reservoir that slows the rise in alveolar partial pressure.

Question 9Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which statement correctly describes the site and mechanism of action of neuromuscular blocking drugs used during intubation?

  1. They block muscarinic receptors at the sinoatrial node
  2. They inhibit acetylcholinesterase within the synaptic cleft
  3. They compete with acetylcholine at nicotinic receptors on the motor endplate Correct answer.
  4. They block voltage-gated sodium channels on the motor nerve axon

Explanation

Non-depolarizing neuromuscular blockers competitively antagonize acetylcholine at the postjunctional nicotinic receptor of the motor endplate, preventing depolarization and muscle contraction. Depolarizing agents such as succinylcholine act at the same receptor but produce a sustained depolarization.

Question 10Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which statement about the pharmacology of succinylcholine is correct?

  1. It is metabolized primarily by the liver and excreted in bile
  2. It is a non-depolarizing blocker with a long duration of action
  3. It is a depolarizing blocker metabolized by plasma butyrylcholinesterase Correct answer.
  4. It directly inhibits the release of acetylcholine from the motor nerve terminal

Explanation

Succinylcholine binds nicotinic receptors and causes a sustained depolarization, producing rapid relaxation of short duration. It is hydrolyzed by plasma butyrylcholinesterase, so genetically low enzyme activity prolongs blockade.

Question 11Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

A patient receiving a non-depolarizing neuromuscular blocker is given neostigmine. Which mechanism explains the reversal of blockade?

  1. Neostigmine increases acetylcholine concentration in the synaptic cleft by inhibiting acetylcholinesterase Correct answer.
  2. Neostigmine increases renal excretion of the blocker
  3. Neostigmine reduces the release of acetylcholine from the nerve terminal
  4. Neostigmine binds the nicotinic receptor and displaces the blocker directly

Explanation

Neostigmine inhibits acetylcholinesterase, so acetylcholine accumulates in the cleft and outcompetes the non-depolarizing blocker at the nicotinic receptor. Because it also potentiates muscarinic effects, an antimuscarinic drug such as glycopyrrolate is given with it.

Question 12Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which physiological effect is expected when a large dose of propofol is given as an induction bolus?

  1. Decreased arterial pressure through vasodilation and reduced sympathetic tone Correct answer.
  2. Increased heart rate through direct beta-adrenergic stimulation
  3. Increased cardiac output through positive inotropy
  4. Increased systemic vascular resistance and hypertension

Explanation

Propofol causes dose-dependent arterial hypotension, mainly through vasodilation and blunting of sympathetic outflow, with little change in heart rate. It does not stimulate the sympathetic nervous system or increase contractility.

Question 13Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which statement about the pharmacokinetics of a drug given as a single intravenous bolus is correct?

  1. Bioavailability equals the volume of distribution divided by clearance
  2. Bioavailability is zero because the drug is destroyed in the gut
  3. Bioavailability depends on first-pass hepatic metabolism
  4. Bioavailability is 100% because the entire dose enters the systemic circulation Correct answer.

Explanation

An intravenous bolus bypasses absorption and first-pass metabolism, so the entire dose reaches the systemic circulation and bioavailability is defined as 100%. First-pass metabolism affects oral dosing, and volume divided by clearance gives elimination half-life, not bioavailability.

Question 14Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which statement correctly explains the concept of context-sensitive half-time for an intravenous anesthetic?

  1. It is the time for the drug to reach peak effect after a bolus
  2. It is the time for the plasma concentration to fall by half after the infusion is stopped, and it lengthens as infusion duration increases for some drugs Correct answer.
  3. It is the time for the receptor to recover after the drug dissociates
  4. It is the time for the drug to be cleared entirely from the body

Explanation

Context-sensitive half-time is the time required for plasma concentration to decline by half after stopping an infusion, and it depends on how long the infusion has run. Drugs with slow redistribution from peripheral compartments show longer half-times after prolonged infusions.

Question 15Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which physical property of a gas is described by Charles's law?

  1. At constant pressure, volume is directly proportional to absolute temperature Correct answer.
  2. The total pressure of a mixture equals the sum of partial pressures
  3. At constant volume, pressure is directly proportional to absolute temperature
  4. At constant temperature, volume is inversely proportional to pressure

Explanation

Charles's law states that at constant pressure, the volume of a fixed amount of gas is directly proportional to its absolute temperature. The inverse volume-pressure relationship is Boyle's law, and the partial-pressure summation is Dalton's law.

Question 16Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

A nitrous oxide cylinder is stored in a warm room. Which statement best explains why the cylinder pressure gauge remains constant while gas is withdrawn as long as liquid is present?

  1. The cylinder contains compressed air rather than nitrous oxide
  2. Nitrous oxide remains entirely gaseous at all times in the cylinder
  3. The pressure equals the saturated vapor pressure of nitrous oxide at the ambient temperature Correct answer.
  4. The pressure is determined by the volume of gas remaining above the liquid

Explanation

Nitrous oxide is stored as a liquid below its critical temperature, and while liquid remains, the pressure depends only on the saturated vapor pressure at that temperature. The gauge therefore stays constant until all liquid has evaporated, after which pressure falls as gas is used.

Question 17Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which statement correctly describes laminar flow through a breathing circuit tube?

  1. Flow is independent of gas viscosity
  2. Flow is proportional to the square root of the pressure gradient and the radius
  3. Flow is directly proportional to the pressure gradient and the fourth power of the radius Correct answer.
  4. Flow is inversely proportional to the fourth power of the radius

Explanation

In laminar flow, the Hagen-Poiseuille relationship shows flow proportional to the pressure gradient and to the fourth power of the radius, and inversely proportional to gas viscosity and tube length. This explains why small reductions in tube or airway caliber greatly increase resistance.

Question 18Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which mechanism best explains the pulse oximeter reading during a period of poor peripheral perfusion?

  1. The signal becomes unreliable because the ratio of pulsatile to non-pulsatile light absorption is distorted Correct answer.
  2. The reading becomes falsely high because of increased venous pulsation
  3. The reading remains accurate because the device measures arterial partial pressure directly
  4. The reading becomes falsely low because of increased carboxyhemoglobin

Explanation

Pulse oximetry relies on detecting the pulsatile component of light absorption, so poor perfusion reduces the signal-to-noise ratio and makes the reading unreliable. The device estimates saturation, not arterial oxygen partial pressure, and does not measure carboxyhemoglobin unless it is a multi-wavelength co-oximeter.

Question 19Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which statement correctly describes the effect of hypothermia on the solubility of a volatile anesthetic in blood?

  1. Solubility is unaffected by temperature
  2. Solubility increases, so induction becomes faster
  3. Solubility increases, so induction becomes slower Correct answer.
  4. Solubility decreases, so induction becomes faster

Explanation

Lowering body temperature increases the solubility of volatile anesthetics in blood and tissues, which raises the capacity of the blood to hold agent and slows the rise in alveolar partial pressure. This contributes to slower induction and prolonged emergence in hypothermic patients.

Question 20Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which statement correctly describes the anatomical relationship relevant to performing a cricothyrotomy?

  1. The cricothyroid membrane lies above the hyoid bone
  2. The cricothyroid membrane lies between the thyroid and cricoid cartilages Correct answer.
  3. The cricothyroid membrane lies between the arytenoid cartilages
  4. The cricothyroid membrane lies between the cricoid and first tracheal ring

Explanation

The cricothyroid membrane is the palpable depression between the lower border of the thyroid cartilage and the upper border of the cricoid cartilage. It is relatively avascular and superficial, which is why it is the preferred site for emergency front-of-neck access in adults.

Question 21Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which change in arterial blood gases is expected during one-lung ventilation when the non-dependent lung is not perfused?

  1. Rise in arterial oxygen partial pressure above pre-induction values
  2. Development of a large right-to-left intrapulmonary shunt with reduced oxygenation Correct answer.
  3. Complete elimination of dead space ventilation
  4. Development of a large left-to-right shunt with normal oxygenation

Explanation

During one-lung ventilation, blood continues to perfuse the non-ventilated lung, creating a right-to-left intrapulmonary shunt that impairs oxygenation. Hypoxic pulmonary vasoconstriction reduces but does not eliminate this shunt.

Question 22Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which statement correctly describes the mechanism of action of morphine at the receptor level?

  1. It is a mu-opioid receptor agonist that reduces synaptic transmission of nociceptive signals Correct answer.
  2. It inhibits cyclooxygenase enzymes in peripheral tissue
  3. It blocks nicotinic receptors at the neuromuscular junction
  4. It blocks sodium channels on peripheral sensory nerves

Explanation

Morphine acts primarily as an agonist at mu-opioid receptors in the central nervous system and dorsal horn, reducing neurotransmitter release and neuronal excitability in pain pathways. Its effects are reversed by naloxone, a competitive opioid antagonist.

Question 23Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which statement correctly describes the effect of adding epinephrine to a local anesthetic solution used for infiltration?

  1. It produces vasoconstriction that slows absorption and prolongs the local effect Correct answer.
  2. It increases the rate of systemic absorption of the local anesthetic
  3. It directly blocks sodium channels to deepen the block
  4. It increases the risk of methemoglobinemia

Explanation

Epinephrine causes local vasoconstriction, which reduces blood flow at the injection site, slowing systemic absorption and prolonging the duration of the local anesthetic while lowering peak plasma concentrations. This reduces the risk of systemic toxicity.

Question 24Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which statement best explains why a patient with a full stomach is at increased risk of aspiration during induction of anesthesia?

  1. Positive pressure ventilation prevents regurgitation
  2. Gastric emptying accelerates during induction
  3. Anesthetic agents increase lower esophageal sphincter tone
  4. Anesthetic agents abolish protective airway reflexes and reduce lower esophageal sphincter tone Correct answer.

Explanation

Induction agents depress airway protective reflexes such as cough and laryngeal closure while also reducing lower esophageal sphincter tone, so gastric contents can regurgitate and be aspirated. This is why rapid sequence induction with cricoid pressure may be used in at-risk patients.

Question 25Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which change in the oxygen-hemoglobin dissociation curve is produced by a rise in 2,3-diphosphoglycerate?

  1. A rightward shift with decreased oxygen affinity Correct answer.
  2. A leftward shift with increased oxygen affinity
  3. A shift that increases hemoglobin oxygen-carrying capacity
  4. No change in curve position

Explanation

Raised 2,3-DPG binds hemoglobin and stabilizes the deoxygenated state, shifting the curve to the right and reducing oxygen affinity so that unloading in tissues is easier. This is an adaptive response to chronic hypoxia or anemia.

Question 26Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

During spontaneous breathing, which muscle is the principal generator of the pressure change that produces tidal volume?

  1. The diaphragm, by contracting and flattening to increase thoracic volume Correct answer.
  2. The external intercostal muscles, by elevating the ribs during inspiration
  3. The sternocleidomastoid muscles, by lifting the sternum during inspiration
  4. The abdominal muscles, by contracting during expiration

Explanation

The diaphragm is the main inspiratory muscle; when it contracts it descends and flattens, enlarging the thoracic cavity and creating a negative intrathoracic pressure that draws air into the lungs. The external intercostals assist but are not the principal generator of tidal volume during quiet breathing. The sternocleidomastoids are accessory muscles recruited only in respiratory distress, and the abdominal muscles are primarily expiratory.

Question 27Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

Which statement best explains why a patient with a high spinal block may develop hypotension?

  1. Blockade of cardiac accelerator fibres (T1–T4) reduces contractility and heart rate
  2. Blockade of vagal fibres produces bradycardia and reduced cardiac output
  3. Blockade of sympathetic efferent fibres causes arteriolar and venous dilation Correct answer.
  4. Blockade of somatic motor fibres to the legs prevents the muscle pump from returning blood

Explanation

High neuraxial blockade interrupts preganglionic sympathetic fibres, producing arteriolar dilation (fall in systemic vascular resistance) and venous dilation (reduced venous return and preload). Both effects lower blood pressure. Motor blockade and vagal effects are not the primary mechanism of hypotension in this setting.

Question 28Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

A patient is given an intravenous bolus of a drug that follows first-order elimination. Which statement correctly describes the plasma concentration–time curve?

  1. The concentration falls exponentially, with a constant half-life Correct answer.
  2. The concentration remains constant until the elimination capacity is exceeded
  3. The concentration falls by a constant amount per unit time regardless of concentration
  4. The concentration falls linearly until the drug is completely eliminated

Explanation

In first-order (exponential) kinetics, a constant fraction of the drug is eliminated per unit time, so the plasma concentration declines exponentially and the half-life is constant. A constant amount eliminated per unit time describes zero-order kinetics, not first-order.

Question 29Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

During spontaneous ventilation, which change increases the work of breathing most?

  1. An increase in airway resistance from bronchoconstriction Correct answer.
  2. A decrease in airway resistance from bronchodilation
  3. An increase in lung compliance from surfactant replacement
  4. A decrease in functional residual capacity to very low lung volumes

Explanation

Work of breathing rises when airway resistance increases, because a greater pressure gradient is needed to move gas through narrowed airways. Bronchodilation lowers resistance and work, while increased compliance reduces the elastic work of breathing. A very low FRC increases elastic work somewhat but airway resistance is the dominant factor among these choices.

Question 30Basic Sciences Applied to Anesthesia (anatomy, physiology, physics, pharmacology)

A patient is receiving a volatile anesthetic. Which statement best explains why the alveolar concentration of the agent rises more slowly in a patient with a large functional residual capacity?

  1. A larger FRC increases the agent's blood–gas partition coefficient
  2. A larger FRC increases the volume into which the agent must equilibrate before alveolar partial pressure rises Correct answer.
  3. A larger FRC reduces the delivered concentration of agent from the vaporizer
  4. A larger FRC increases pulmonary blood flow and removes agent from the alveoli more rapidly

Explanation

The FRC acts as a buffer volume; a larger FRC means more agent must be transferred into the lung before the alveolar partial pressure can rise, slowing induction. Pulmonary blood flow and vaporizer output are not directly determined by FRC, and the blood–gas partition coefficient is a property of the agent, not of lung volume.

Question 31Preoperative Assessment and Patient Preparation

During the preoperative airway assessment of an adult scheduled for general anesthesia, which finding most strongly predicts a difficult mask ventilation and should be documented and communicated to the anesthesia team?

  1. Modified Mallampati class III with a thick neck and beard Correct answer.
  2. Thyromental distance of 7 cm with full neck extension
  3. Mallampati class I with full uvula visibility
  4. Interincisor opening of 5 cm with normal dentition

Explanation

A modified Mallampati class III combined with a thick neck and beard reflects reduced oropharyngeal space and poor mask seal, both recognized predictors of difficult mask ventilation. These findings must be recorded during the preoperative assessment so that airway equipment and backup plans are prepared. Normal mouth opening, adequate thyromental distance, and class I views are reassuring rather than predictive of difficulty.

Question 32Preoperative Assessment and Patient Preparation

A patient is scheduled for elective surgery and reports eating a full meal two hours before arrival. According to standard preoperative fasting guidance for adults, what is the most appropriate action by the anesthesia technician?

  1. Inform the anesthesia team and expect the case to be postponed or delayed Correct answer.
  2. Give the patient water to speed gastric emptying and proceed
  3. Proceed with induction because two hours is adequate for solids
  4. Record the meal and proceed without informing anyone

Explanation

Standard adult fasting guidance requires at least eight hours after a full meal before elective anesthesia because of the risk of pulmonary aspiration. A two-hour interval after solid food is inadequate, so the finding must be reported and the case is likely to be delayed. Clear fluids have a shorter fasting requirement, but giving water does not empty the stomach of solid food.

Question 33Preoperative Assessment and Patient Preparation

Which preoperative laboratory result should prompt the anesthesia technician to alert the anesthesia team before proceeding with a regional technique in an otherwise healthy adult?

  1. Fasting glucose 95 mg/dL
  2. Serum creatinine 0.9 mg/dL
  3. Platelet count 45,000/µL Correct answer.
  4. Hemoglobin 13.5 g/dL

Explanation

A platelet count of 45,000/µL represents significant thrombocytopenia and raises the risk of bleeding complications, particularly with neuraxial or deep regional blocks. The anesthesia team must be informed so that the technique and coagulation status can be reassessed. The other values listed fall within normal reference ranges.

Question 34Preoperative Assessment and Patient Preparation

In the preoperative holding area, which element is essential when obtaining informed consent for anesthesia from an adult patient?

  1. A witnessed signature obtained after premedication has taken effect
  2. Explanation of anesthetic options, material risks, and the opportunity to ask questions Correct answer.
  3. The surgeon signing on the patient's behalf
  4. Verbal agreement from a relative without the patient's involvement

Explanation

Valid informed consent requires that the patient receive an explanation of the proposed anesthetic options and their material risks and be given the chance to ask questions before deciding. Consent obtained after sedative premedication may be invalid because the patient's capacity to understand is impaired. A competent adult must consent personally, and a relative cannot substitute for that.

Question 35Preoperative Assessment and Patient Preparation

A patient with well-controlled asthma is scheduled for general anesthesia. Which preoperative instruction is most appropriate for the anesthesia technician to reinforce?

  1. Begin a course of oral antibiotics the day before surgery
  2. Stop all inhaled bronchodilators on the morning of surgery
  3. Avoid all fluids for 24 hours before surgery
  4. Continue prescribed controller inhalers as directed and bring them to the hospital Correct answer.

Explanation

Patients with asthma should continue their prescribed inhaled controller and reliever medications in the perioperative period to maintain bronchial stability and reduce the risk of bronchospasm during induction. They should bring their inhalers so they can be used if needed. Routine antibiotics and prolonged fluid restriction are not indicated and could cause harm.

Question 36Preoperative Assessment and Patient Preparation

Which preoperative vital sign finding in an adult scheduled for elective surgery most warrants immediate communication with the anesthesia team?

  1. Heart rate 88 beats per minute
  2. Blood pressure 128/78 mmHg
  3. Oxygen saturation 98% on room air
  4. Temperature 38.9 °C with new productive cough Correct answer.

Explanation

A fever of 38.9 °C with a new productive cough suggests an active respiratory infection, which increases the risk of perioperative pulmonary complications and may justify postponing elective surgery. This finding needs prompt communication so the anesthesia team can reassess fitness for anesthesia. The other vital signs are within normal limits.

Question 37Preoperative Assessment and Patient Preparation

During preoperative assessment, a patient discloses a previous severe reaction to a neuromuscular blocking agent. What is the most appropriate action by the anesthesia technician?

  1. Administer a premedication antihistamine and omit further documentation
  2. Wait until the patient is in the operating room to mention the reaction
  3. Record it as a mild allergy and proceed with the same agent
  4. Document the reaction, identify the specific agent, and notify the anesthesia team before induction Correct answer.

Explanation

A prior severe reaction to a neuromuscular blocking agent must be clearly documented with the specific drug identified, and the anesthesia team must be informed before induction so an alternative agent can be planned. Accurate allergy documentation is a core safety step. Premedication alone does not prevent anaphylaxis and does not replace communication.

Question 38Preoperative Assessment and Patient Preparation

An adult patient scheduled for surgery takes warfarin for atrial fibrillation. The preoperative assessment shows an INR of 2.8. Which action is most appropriate for the anesthesia technician?

  1. Reassure the patient that anticoagulants do not affect anesthesia
  2. Proceed with neuraxial anesthesia without informing the team
  3. Administer vitamin K without an order to reverse the anticoagulation
  4. Notify the anesthesia team and expect the case to be reviewed for coagulation status Correct answer.

Explanation

An INR of 2.8 indicates therapeutic anticoagulation, which raises the risk of bleeding with neuraxial or invasive techniques. The anesthesia team must be notified so the timing of surgery and the anesthesia plan can be reviewed. Reversal agents should only be given under a physician's order.

Question 39Preoperative Assessment and Patient Preparation

A patient scheduled for elective surgery has a fasting blood glucose of 320 mg/dL and reports increased thirst and urination. What is the most appropriate preoperative action?

  1. Document the value and take no further action
  2. Proceed with surgery and treat the glucose after induction
  3. Notify the anesthesia team for glycemic assessment and likely postponement of elective surgery Correct answer.
  4. Give the patient a sugary drink to prevent hypoglycemia

Explanation

Marked hyperglycemia with symptoms of polyuria and polydipsia suggests poorly controlled or undiagnosed diabetes, which increases perioperative risk and usually warrants postponement of elective surgery pending evaluation. The anesthesia team must be informed. Treating after induction or ignoring the value would expose the patient to avoidable complications.

Question 40Preoperative Assessment and Patient Preparation

A 78-year-old patient is scheduled for hip surgery and takes metformin. Which preoperative consideration should the anesthesia technician anticipate communicating to the surgical team?

  1. Metformin has no interaction with anesthesia and requires no review
  2. Metformin may need to be withheld around surgery, especially with renal impairment, to reduce the risk of lactic acidosis Correct answer.
  3. Metformin should be replaced with insulin in all patients before surgery
  4. Metformin must always be continued uninterrupted regardless of renal function

Explanation

Metformin is commonly withheld around the time of surgery, particularly when renal function is impaired or contrast dye is used, because accumulation increases the risk of lactic acidosis. The anesthesia and surgical teams review the timing of the last dose and renal function. It is not universally continued, nor is routine insulin substitution required.

Question 41Preoperative Assessment and Patient Preparation

During preoperative assessment, a patient reports a history of malignant hyperthermia in a sibling. Which preparation is most appropriate?

  1. Proceed with succinylcholine and volatile agents as usual
  2. Notify the anesthesia team so trigger-free agents and dantrolene availability can be arranged Correct answer.
  3. Give dantrolene prophylactically to every patient before induction
  4. Delay the surgery indefinitely because anesthesia is contraindicated

Explanation

A family history of malignant hyperthermia raises the patient's susceptibility, so the anesthesia team must be informed to plan a trigger-free anesthetic and ensure dantrolene is immediately available. Volatile agents and succinylcholine are avoided. Prophylactic dantrolene is not routine, and anesthesia is not contraindicated with proper precautions.

Question 42Preoperative Assessment and Patient Preparation

A patient with a documented latex allergy is scheduled for surgery. Which preoperative measure is most appropriate for the anesthesia technician to ensure?

  1. Latex-free gloves, tubing, and equipment are prepared and the allergy is flagged in the record Correct answer.
  2. The patient is given a latex-containing urinary catheter as a test
  3. Only the surgeon's gloves need to be latex-free
  4. The allergy is noted verbally at the end of the case

Explanation

For a patient with latex allergy, all latex-containing items in the anesthesia environment, including gloves, tubing, and catheters, must be replaced with latex-free alternatives, and the allergy must be clearly flagged. Exposure can cause anaphylaxis. A single verbal note at the end of the case is inadequate.

Question 43Preoperative Assessment and Patient Preparation

A patient scheduled for general anesthesia has loose, mobile upper front teeth. What is the most appropriate preoperative action by the anesthesia technician?

  1. Document the finding and inform the anesthesia team so airway management can be planned to reduce the risk of dental injury Correct answer.
  2. Ignore the finding because it does not affect anesthesia
  3. Remove the teeth without informing the team
  4. Cancel the surgery permanently

Explanation

Loose teeth increase the risk of dislodgement and aspiration during laryngoscopy and airway manipulation. The finding should be documented and communicated so the team can plan a gentler technique and discuss the risk with the patient. Removing teeth is not within the technician's role, and surgery need not be cancelled.

Question 44Preoperative Assessment and Patient Preparation

A patient is scheduled for elective surgery and reports a recent upper respiratory infection with fever and productive cough that resolved three days ago. Which response by the anesthesia technician is most appropriate?

  1. Assume the infection is resolved and proceed without comment
  2. Give an antibiotic and proceed with induction
  3. Tell the patient that respiratory infections never affect anesthesia
  4. Inform the anesthesia team, who may defer elective surgery depending on symptom severity and timing Correct answer.

Explanation

Recent upper respiratory infection can increase the risk of bronchospasm, laryngospasm, and other pulmonary complications during anesthesia, particularly in the first weeks after illness. The anesthesia team should be informed so they can decide whether to defer elective surgery. The technician should not initiate antibiotics or dismiss the risk.

Question 45Preoperative Assessment and Patient Preparation

A patient scheduled for surgery takes a monoamine oxidase inhibitor. Which preoperative concern should the anesthesia technician ensure is communicated to the anesthesia team?

  1. The MAOI may interact with anesthetic drugs and sympathomimetics, requiring careful planning Correct answer.
  2. The drug should be doubled on the morning of surgery
  3. The drug only affects blood glucose levels
  4. The drug has no interactions with anesthetic agents

Explanation

Monoamine oxidase inhibitors can interact dangerously with sympathomimetics, meperidine, and other anesthetic agents, producing hypertensive crises or serotonin syndrome. The anesthesia team must know about the medication so that drug selection and timing can be planned. The drug does not primarily affect glucose and should never be doubled without an order.

Question 46Preoperative Assessment and Patient Preparation

A patient is scheduled for surgery and reports taking an herbal supplement containing ginkgo and garlic daily. Which preoperative consideration is most appropriate?

  1. The supplements only affect blood pressure and can be ignored
  2. The supplements should be doubled before surgery to boost immunity
  3. The supplements may increase bleeding risk and should be reported to the anesthesia team for guidance Correct answer.
  4. Herbal supplements are always safe and need no review

Explanation

Ginkgo and garlic can impair platelet function and increase bleeding risk, which is relevant for both general and regional anesthesia. The anesthesia team should be informed so that timing and coagulation status can be assessed. Herbal products are not automatically safe and should never be doubled without guidance.

Question 47Preoperative Assessment and Patient Preparation

During preoperative assessment, a patient reports a previous anesthetic during which they remained aware but paralyzed. Which action by the anesthesia technician is most appropriate?

  1. Give a sedative and omit documentation
  2. Cancel all future surgery for the patient
  3. Document the report and inform the anesthesia team so depth monitoring and an appropriate plan can be considered Correct answer.
  4. Dismiss the report as a dream and proceed

Explanation

A report of intraoperative awareness with paralysis is a significant psychological and clinical event that should be documented and communicated so the team can plan depth-of-anesthesia monitoring and address the patient's concerns. Dismissing the report or sedating without documentation is inappropriate. Awareness history does not contraindicate anesthesia.

Question 48Preoperative Assessment and Patient Preparation

A patient with severe aortic stenosis is scheduled for elective surgery. Which preoperative finding most increases the risk of perioperative decompensation and must be communicated to the anesthesia team?

  1. A heart rate of 76 beats per minute
  2. A systolic murmur with a history of exertional syncope Correct answer.
  3. A blood pressure of 118/72 mmHg
  4. A history of mild seasonal allergies

Explanation

Severe aortic stenosis with exertional syncope indicates advanced disease and a high risk of perioperative decompensation, particularly with changes in preload, afterload, and heart rate. The anesthesia team must be informed so that the anesthetic plan and monitoring can be tailored. Seasonal allergies and normal vital signs are not comparable concerns.

Question 49Preoperative Assessment and Patient Preparation

A patient scheduled for major surgery has a body mass index of 48 kg/m² and reports loud snoring and witnessed apneas. Which preoperative preparation is most appropriate?

  1. Give a sedative premedication to reduce anxiety without informing the team
  2. Skip the airway assessment because obesity does not affect it
  3. Notify the anesthesia team and anticipate planning for difficult airway and postoperative monitoring for obstructive sleep apnea Correct answer.
  4. Assume the patient is low risk because obesity is common

Explanation

Severe obesity with witnessed apneas suggests obstructive sleep apnea, which raises the risk of difficult airway management, opioid-related respiratory depression, and postoperative complications. The anesthesia team should be informed so that airway planning and postoperative monitoring can be arranged. Sedative premedication without notification could worsen respiratory depression.

Question 50Preoperative Assessment and Patient Preparation

A patient with a permanent pacemaker is scheduled for surgery using electrocautery near the chest. Which preoperative action by the anesthesia technician is most appropriate?

  1. Ignore the pacemaker because it is permanent
  2. Ensure the device type and settings are documented and communicated so perioperative management can be planned Correct answer.
  3. Place the cautery pad directly over the device
  4. Turn off the pacemaker without an order

Explanation

Electrocautery can interfere with pacemaker function, so the device type, indication, and programmed settings must be documented and communicated to the anesthesia team before surgery. They can then plan monitoring and cautery precautions. Deactivating the device requires a physician order, and placing a cautery pad over the device is unsafe.