I85PREP
⌘ K
CONO Clinical Sciences study materials
CONO Clinical Sciences study resources

CONO Clinical Sciences practice questions

One question at a time. Build your CONO Clinical Sciences understanding.

First 50 of 200 questions. Each one lists the choices, the correct answer, and an explanation. The checker at the top of this page saves progress in this browser when it is available.

Continue in the practice tool above to load more questions, 50 at a time.

Question 1Clinical Assessment and Diagnosis

Which term describes the standard reference point used to describe the location of a patient's pain relative to a body structure?

  1. Trendelenburg position
  2. Anatomical position Correct answer.
  3. Lithotomy position
  4. Fowler position

Explanation

Anatomical position is the standard reference posture in which the body is upright, facing forward, with palms facing forward, allowing consistent description of locations and directions. The other positions listed are clinical positioning maneuvers used for examination or procedures, not reference frames for anatomical description.

Question 2Clinical Assessment and Diagnosis

A patient reports pain that began suddenly and resolves within a few days. How is this pain best classified by duration?

  1. Acute Correct answer.
  2. Chronic
  3. Referred somatic
  4. Referred

Explanation

Acute pain has a sudden onset and a relatively short duration, typically resolving as tissue heals. Chronic pain persists beyond the expected healing period, usually defined as longer than three to six months. Referred pain describes a location pattern rather than a duration.

Question 3Clinical Assessment and Diagnosis

During auscultation of the lungs, which finding is considered normal vesicular breath sound?

  1. High-pitched whistling sounds heard on expiration
  2. Soft, low-pitched sounds heard over most of the lung fields Correct answer.
  3. Crackling sounds heard at the lung bases on inspiration
  4. Harsh, high-pitched sounds heard over the trachea

Explanation

Vesicular breath sounds are soft, low-pitched, and heard over most peripheral lung fields, with inspiration longer than expiration. Harsh tracheal sounds are normal only over the trachea, while crackles and wheezes are abnormal adventitious sounds.

Question 4Clinical Assessment and Diagnosis

Which instrument is used to assess the pressure exerted by the heart as it pumps blood through the arterial system?

  1. Sphygmomanometer Correct answer.
  2. Stethoscope
  3. Spirometer
  4. Otoscope

Explanation

A sphygmomanometer measures arterial blood pressure, typically used with a cuff and often combined with a stethoscope for auscultation. The stethoscope amplifies body sounds, the otoscope examines the ear canal, and the spirometer measures lung volumes.

Question 5Clinical Assessment and Diagnosis

Which finding on the Glasgow Coma Scale would indicate the most severely impaired level of consciousness?

  1. Spontaneous eye opening with confused conversation and obeying commands
  2. Eye opening to pain with no verbal response and no motor response Correct answer.
  3. Eye opening to speech with inappropriate words and withdrawal from pain
  4. Eye opening to pain with incomprehensible sounds and abnormal flexion

Explanation

The Glasgow Coma Scale sums eye, verbal, and motor scores, with lower totals indicating deeper impairment. The lowest possible responses are no eye opening, no verbal response, and no motor response, which yield the minimum score and indicate the most severe impairment.

Question 6Clinical Assessment and Diagnosis

Which pulse characteristic is best assessed by palpating the radial artery while noting the time between beats?

  1. Contour
  2. Rhythm Correct answer.
  3. Amplitude
  4. Symmetry

Explanation

Rhythm describes the regularity and timing of impulses between beats and is assessed by noting intervals between pulsations. Amplitude refers to the force or volume of the pulse, contour describes the shape of the waveform, and symmetry compares pulses on opposite sides of the body.

Question 7Clinical Assessment and Diagnosis

Which component of the general survey is assessed first when a patient enters the examination room?

  1. Apparent state of health and level of distress Correct answer.
  2. Joint range of motion
  3. Cranial nerve function
  4. Deep tendon reflexes

Explanation

The general survey begins with observation of apparent state of health, level of consciousness, and signs of distress as the patient is first seen. Reflexes, cranial nerves, and joint motion are assessed later during focused physical examination.

Question 8Clinical Assessment and Diagnosis

Which term describes a symptom that the clinician can observe or measure rather than one the patient reports?

  1. Subjective symptom
  2. Objective finding Correct answer.
  3. Referred symptom
  4. Prodromal symptom

Explanation

Objective findings are observable or measurable by the clinician, such as blood pressure or a rash. Subjective symptoms are reported by the patient, such as pain or nausea, and are not directly verifiable by observation.

Question 9Clinical Assessment and Diagnosis

A patient's blood pressure reads 148/94 mmHg on two separate visits. How should this finding be interpreted?

  1. Normal blood pressure requiring no action
  2. Elevated blood pressure warranting further evaluation Correct answer.
  3. Isolated systolic hypertension with normal diastolic pressure
  4. Hypotension requiring fluid resuscitation

Explanation

Readings persistently at or above 140/90 mmHg on separate occasions indicate hypertension and warrant confirmation and further evaluation. Normal blood pressure is generally below 120/80 mmHg, and isolated systolic hypertension requires a normal diastolic value, which is not the case here.

Question 10Clinical Assessment and Diagnosis

A patient describes chest discomfort that radiates to the left arm and jaw. What is the clinical significance of this pattern?

  1. It rules out serious pathology
  2. It confirms a musculoskeletal strain
  3. It indicates a pulmonary infection
  4. It suggests a cardiac source of pain Correct answer.

Explanation

Pain radiating to the arm, jaw, or back is a classic pattern associated with myocardial ischemia and should prompt urgent cardiac evaluation. Musculoskeletal and pulmonary causes do not typically produce this specific radiation pattern, and the finding never rules out serious disease.

Question 11Clinical Assessment and Diagnosis

A patient has swelling of both lower legs that is symmetric, pitting, and worse in the evening. Which cause is most consistent with this presentation?

  1. Arterial occlusion
  2. Cellulitis of one leg
  3. Deep vein thrombosis of one leg
  4. Venous insufficiency Correct answer.

Explanation

Bilateral, symmetric, pitting edema that worsens with dependency is typical of venous insufficiency or systemic causes such as heart failure. Deep vein thrombosis and cellulitis are usually unilateral, and arterial occlusion produces cool, pale, painful limbs rather than pitting edema.

Question 12Clinical Assessment and Diagnosis

Which feature of a headache most strongly suggests a need for urgent evaluation?

  1. Bilateral throbbing pain associated with stress
  2. Recurring pain with a known migraine history
  3. Gradual onset over several hours relieved by rest
  4. Sudden onset reaching maximum intensity within seconds Correct answer.

Explanation

A thunderclap headache that reaches peak intensity almost instantly raises concern for subarachnoid hemorrhage or other vascular emergencies and requires urgent workup. Gradual, stress-related, or recurrent headaches with an established pattern are less immediately alarming.

Question 13Clinical Assessment and Diagnosis

Which finding on inspection of the abdomen suggests ascites rather than simple obesity?

  1. Visible peristaltic waves
  2. Uniform subcutaneous fat distribution
  3. A midline vertical scar
  4. Flank dullness that shifts with position Correct answer.

Explanation

Shifting dullness on percussion indicates free peritoneal fluid that moves with gravity, a hallmark of ascites. Uniform fat distribution suggests obesity, scars indicate prior surgery, and visible peristalsis suggests bowel obstruction rather than fluid accumulation.

Question 14Clinical Assessment and Diagnosis

A patient has a positive Murphy sign during abdominal examination. Which condition does this finding most suggest?

  1. Small bowel obstruction
  2. Peptic ulcer disease
  3. Acute cholecystitis Correct answer.
  4. Acute appendicitis

Explanation

Murphy sign is inspiratory arrest on deep palpation of the right upper quadrant, reflecting an inflamed gallbladder, and is classically associated with acute cholecystitis. Appendicitis produces right lower quadrant tenderness such as McBurney point pain, while obstruction and ulcer disease produce different findings.

Question 15Clinical Assessment and Diagnosis

Which cranial nerve is assessed by asking the patient to shrug the shoulders against resistance?

  1. Facial nerve (CN VII)
  2. Accessory nerve (CN XI) Correct answer.
  3. Hypoglossal nerve (CN XII)
  4. Trigeminal nerve (CN V)

Explanation

The accessory nerve supplies the trapezius and sternocleidomastoid muscles, so shoulder shrug against resistance tests CN XI. The facial nerve controls facial expression, the trigeminal nerve provides facial sensation and mastication, and the hypoglossal nerve controls tongue movement.

Question 16Clinical Assessment and Diagnosis

A patient's deep tendon reflex is graded as 3+. How should this be interpreted?

  1. Brisk reflex, possibly normal or indicative of hyperreflexia Correct answer.
  2. Absent reflex indicating neuropathy
  3. Sustained clonus indicating upper motor neuron disease
  4. Normal reflex requiring no comment

Explanation

Reflexes are graded from 0 (absent) to 4+ (brisk, with clonus), and 3+ indicates a brisker-than-average response that may be normal or suggest hyperreflexia depending on context. Clonus is graded 4+, and absent reflexes are graded 0.

Question 17Clinical Assessment and Diagnosis

Which finding on skin examination is most concerning for malignancy?

  1. An asymmetric lesion with irregular borders and varied color Correct answer.
  2. A lesion with a central dimple
  3. A symmetric, uniformly pigmented macule
  4. A lesion that blanches with pressure

Explanation

The ABCDE criteria-asymmetry, border irregularity, color variation, diameter, and evolution-identify features concerning for melanoma. Symmetric, uniformly pigmented lesions are usually benign, blanching suggests vascular lesions, and central dimpling is not a standard malignancy criterion.

Question 18Clinical Assessment and Diagnosis

During the mental status examination, a patient cannot recall three words after five minutes but can repeat them immediately. Which domain is primarily affected?

  1. Orientation
  2. Attention
  3. Recent memory Correct answer.
  4. Insight

Explanation

Recall of items after a delay tests recent memory, and failure to retrieve them despite intact immediate repetition indicates a memory deficit. Attention is tested by immediate repetition or serial sevens, orientation by awareness of person, place, and time, and insight by self-awareness of illness.

Question 19Clinical Assessment and Diagnosis

A patient has a blood pressure of 86/54 mmHg with a heart rate of 118 beats per minute and cool extremities. What is the most likely underlying state?

  1. Shock with compensatory tachycardia Correct answer.
  2. Normal physiologic variation
  3. Essential hypertension
  4. Isolated systolic hypertension

Explanation

Hypotension with compensatory tachycardia and cool extremities suggests poor perfusion consistent with shock. Essential and isolated systolic hypertension involve elevated pressures, and these values fall outside normal physiologic variation for a resting adult.

Question 20Clinical Assessment and Diagnosis

Which finding best distinguishes a systolic murmur caused by aortic stenosis from one caused by mitral regurgitation?

  1. Mitral regurgitation radiates to the carotids and peaks in midsystole
  2. Mitral regurgitation occurs only in diastole
  3. Aortic stenosis is holosystolic and radiates to the axilla
  4. Aortic stenosis radiates to the carotids and peaks in midsystole Correct answer.

Explanation

Aortic stenosis produces a crescendo-decrescendo midsystolic murmur that radiates to the carotid arteries. Mitral regurgitation is holosystolic and radiates to the axilla, and both murmurs occur in systole rather than diastole.

Question 21Clinical Assessment and Diagnosis

A patient has a positive Babinski sign with the great toe extending and other toes fanning after plantar stimulation. What does this indicate?

  1. Normal adult response
  2. Lower motor neuron disease
  3. Peripheral neuropathy
  4. Upper motor neuron dysfunction Correct answer.

Explanation

A positive Babinski sign reflects loss of corticospinal inhibition and indicates upper motor neuron dysfunction in adults. In infants it can be normal before myelination, but in adults the plantar response should be flexor, and lower motor neuron or peripheral disease does not produce this sign.

Question 22Clinical Assessment and Diagnosis

A patient has jugular venous distension, bilateral basilar crackles, and dependent edema. Which diagnosis best unifies these findings?

  1. Cirrhosis with portal hypertension
  2. Nephrotic syndrome
  3. Congestive heart failure Correct answer.
  4. Chronic obstructive pulmonary disease

Explanation

The combination of elevated jugular venous pressure, pulmonary crackles, and dependent edema reflects elevated filling pressures from congestive heart failure. COPD produces airflow obstruction without venous distension, nephrotic syndrome causes edema but not typically crackles and venous distension together, and cirrhosis produces ascites and varices rather than basilar crackles.

Question 23Clinical Assessment and Diagnosis

A patient reports episodic vertigo with hearing loss and tinnitus, and examination shows nystagmus during attacks. Which diagnosis is most consistent?

  1. Meniere disease Correct answer.
  2. Vertebrobasilar stroke
  3. Vestibular schwannoma
  4. Benign paroxysmal positional vertigo

Explanation

Meniere disease is characterized by episodic vertigo lasting minutes to hours, fluctuating sensorineural hearing loss, tinnitus, and aural fullness. BPPV is triggered by positional changes without hearing loss, vestibular schwannoma causes progressive unilateral hearing loss, and vertebrobasilar stroke usually produces abrupt persistent deficits.

Question 24Clinical Assessment and Diagnosis

A patient has a thyroid gland that is diffusely enlarged, smooth, and nontender, with signs of hyperthyroidism. Which condition is most likely?

  1. Subacute thyroiditis
  2. Thyroid malignancy
  3. Graves disease Correct answer.
  4. Hashimoto thyroiditis

Explanation

Diffuse, smooth, nontender goiter with hyperthyroid features is typical of Graves disease, an autoimmune stimulation of the thyroid. Subacute thyroiditis is painful and tender, Hashimoto thyroiditis often presents with hypothyroidism and a firm irregular gland, and malignancy usually causes a focal nodule.

Question 25Clinical Assessment and Diagnosis

A patient has a positive straight leg raise test at 30 degrees of elevation, reproducing radiating pain down the posterior leg. What does this finding suggest?

  1. Quadriceps tendonitis
  2. Sacral fracture
  3. Hip joint osteoarthritis
  4. Lumbosacral nerve root irritation Correct answer.

Explanation

The straight leg raise test stretches the lumbosacral nerve roots, and reproduction of radiating pain at a low angle suggests nerve root irritation, often from disc herniation. Hip osteoarthritis produces groin pain with rotation, sacral fracture causes localized tenderness, and quadriceps tendonitis causes anterior thigh pain.

Question 26Clinical Assessment and Diagnosis

A patient reports a throbbing headache that has recurred for years, always on one side, lasting several hours, with nausea and sensitivity to light. The neurologic examination between episodes is normal. Which term best classifies this type of headache?

  1. Primary headache Correct answer.
  2. Referred headache
  3. Secondary headache
  4. Traction headache

Explanation

A primary headache is one in which the headache itself is the disorder, with no underlying structural or systemic cause; migraine and tension-type headache are classic examples. A normal interictal neurologic examination and a long, stereotyped pattern support this classification. Secondary headaches arise from another condition and require investigation of that cause.

Question 27Clinical Assessment and Diagnosis

During auscultation of the heart, a clinician hears a high-pitched blowing murmur at the upper right sternal border that radiates into the right carotid artery. Which valvular lesion does this finding most suggest?

  1. Pulmonary stenosis
  2. Aortic stenosis Correct answer.
  3. Mitral stenosis
  4. Tricuspid regurgitation

Explanation

Aortic stenosis produces a systolic ejection murmur loudest at the right second intercostal space, and its high velocity jet commonly radiates to the carotids. The quality is harsh and crescendo-decrescendo. Location and radiation together are the key localizing features.

Question 28Clinical Assessment and Diagnosis

A 62-year-old patient has a fasting glucose of 132 mg/dL, a random glucose of 205 mg/dL with classic polyuria and polydipsia, and an HbA1c of 7.1%. How should these results be interpreted?

  1. Normal glucose metabolism for age
  2. Impaired glucose tolerance without diabetes
  3. Prediabetes requiring repeat testing in one year
  4. Findings consistent with diabetes mellitus Correct answer.

Explanation

Diabetes can be diagnosed by a fasting glucose of 126 mg/dL or higher, a random glucose of 200 mg/dL or higher accompanied by classic symptoms, or an HbA1c of 6.5% or greater. This patient meets all three criteria, and the presence of typical symptoms makes the diagnosis secure without a second confirmatory test.

Question 29Clinical Assessment and Diagnosis

A patient has a serum sodium of 128 mmol/L, and the clinician suspects the hyponatremia reflects true solute dilution rather than a laboratory artifact. Which measurement is most useful for confirming that the osmolality is genuinely low?

  1. Serum potassium
  2. Serum osmolality Correct answer.
  3. Anion gap
  4. Urine specific gravity

Explanation

Hyponatremia is classified as hypo-osmolar, iso-osmolar, or hyper-osmolar, and measured serum osmolality is the direct way to make that distinction. True dilutional hyponatremia shows low measured osmolality, whereas pseudohyponatremia from hyperlipidemia or hyperproteinemia shows normal osmolality. Treatment decisions depend on this step.

Question 30Clinical Assessment and Diagnosis

A patient presents with sudden severe tearing chest pain, and a pulse deficit and blood pressure difference of 22 mmHg are found between the arms. Which next step is most appropriate?

  1. Order urgent aortic imaging such as CT angiography Correct answer.
  2. Obtain an immediate ECG and start aspirin
  3. Reassure and arrange outpatient follow-up
  4. Begin anticoagulation with heparin

Explanation

Tearing pain with interarm blood pressure difference and a pulse deficit raises strong suspicion for aortic dissection, a time-critical emergency. Definitive diagnosis requires urgent aortic imaging, typically CT angiography, and treatment focuses on blood pressure and heart rate control before any definitive repair. Antiplatelet or anticoagulant therapy is avoided because it can worsen hemorrhage into the false lumen.

Question 31Patient Management and Treatment Planning

A patient with newly diagnosed hypertension and stage 3 chronic kidney disease needs a first-line antihypertensive. Which class both lowers blood pressure and slows progression of albuminuric kidney disease?

  1. Thiazide diuretic
  2. ACE inhibitor Correct answer.
  3. Alpha-1 blocker
  4. Loop diuretic

Explanation

ACE inhibitors reduce intraglomerular pressure by dilating the efferent arteriole and have randomized evidence for slowing albuminuric CKD progression beyond blood pressure lowering alone. They are therefore preferred first-line agents in hypertensive patients with proteinuric kidney disease.

Question 32Patient Management and Treatment Planning

Which finding is the most reliable early indicator of inadequate tissue perfusion during resuscitation of a patient with septic shock?

  1. Urine output of 0.6 mL/kg/h
  2. Persistent serum lactate elevation Correct answer.
  3. Warm extremities
  4. Normal central venous pressure

Explanation

Serum lactate reflects the balance between oxygen delivery and consumption, and persistent elevation after initial resuscitation signals ongoing hypoperfusion and higher mortality. CVP and physical signs correlate poorly with perfusion, so lactate clearance is the more dependable marker.

Question 33Patient Management and Treatment Planning

A 68-year-old with atrial fibrillation and a CHA2DS2-VASc score of 4 has a history of a bleeding duodenal ulcer that healed two years ago. What is the most appropriate anticoagulation strategy?

  1. No anticoagulation because of prior bleeding
  2. Apixaban with gastroenterology co-management Correct answer.
  3. Aspirin monotherapy indefinitely
  4. Warfarin with a target INR of 3.0 to 4.0

Explanation

A high stroke risk generally outweighs bleeding risk, and a direct oral anticoagulant such as apixaban has a favorable bleeding profile while providing effective stroke prevention. Coordinating with gastroenterology allows ulcer prophylaxis and monitoring rather than withholding anticoagulation.

Question 34Patient Management and Treatment Planning

Which parameter best guides the initial tidal volume setting for lung-protective ventilation in a patient with acute respiratory distress syndrome?

  1. Measured predicted body weight Correct answer.
  2. Actual body weight
  3. Peak airway pressure alone
  4. Arterial oxygen saturation

Explanation

Lung-protective ventilation targets 6 mL/kg of predicted body weight because lung size correlates with height rather than actual weight. Using actual weight in obese patients risks harmful overdistension.

Question 35Patient Management and Treatment Planning

A patient on warfarin for a mechanical mitral valve has an INR of 8.5 with no bleeding. Which management is most appropriate?

  1. Transfuse platelets and continue warfarin
  2. Continue the current dose and recheck in one week
  3. Give vitamin K 10 mg IV and fresh frozen plasma
  4. Hold warfarin and give oral vitamin K while arranging urgent reassessment Correct answer.

Explanation

For a markedly elevated INR without bleeding in a patient who needs continuous anticoagulation, warfarin is held and low-dose oral vitamin K is used, with close monitoring for bleeding and repeat INR. Aggressive reversal is reserved for serious bleeding or urgent procedures.

Question 36Patient Management and Treatment Planning

A patient with type 2 diabetes and an eGFR of 25 mL/min/1.73 m2 is being reviewed. Which medication should be discontinued because of reduced clearance and risk of toxicity?

  1. Metformin Correct answer.
  2. Insulin glargine
  3. Sitagliptin at reduced dose
  4. Empagliflozin

Explanation

Metformin is contraindicated when eGFR falls below 30 mL/min/1.73 m2 because reduced clearance increases the risk of lactic acidosis. Insulin and certain other agents can be continued with appropriate dose adjustment.

Question 37Patient Management and Treatment Planning

Which electrolyte abnormality most commonly precipitates digoxin toxicity in a patient taking digoxin for heart failure?

  1. Hypercalcemia
  2. Hypokalemia Correct answer.
  3. Hypophosphatemia
  4. Hypernatremia

Explanation

Hypokalemia increases digoxin binding at the sodium-potassium ATPase and lowers the threshold for toxicity, so diuretic-induced potassium loss is a common precipitant. Potassium should be monitored and corrected in patients on digoxin.

Question 38Patient Management and Treatment Planning

A 55-year-old presents with sudden painless loss of vision in one eye described as a curtain descending. What is the most appropriate immediate next step?

  1. Prescribe oral corticosteroids and reassess in 48 hours
  2. Schedule outpatient ophthalmology follow-up in one week
  3. Refer for emergent ophthalmologic evaluation for possible retinal artery occlusion Correct answer.
  4. Start topical antibiotic drops and observe

Explanation

A curtain-like painless monocular visual loss suggests retinal artery occlusion or amaurosis fugax, which requires emergent ophthalmologic assessment and evaluation for embolic sources such as carotid disease or atrial fibrillation. Delay risks permanent vision loss and misses a stroke-equivalent event.

Question 39Patient Management and Treatment Planning

Which intervention most reliably reduces the risk of ventilator-associated pneumonia in an intubated patient?

  1. Routine chest physiotherapy
  2. Elevating the head of the bed to 30 to 45 degrees Correct answer.
  3. Daily chest radiographs
  4. Prophylactic broad-spectrum antibiotics

Explanation

Head-of-bed elevation reduces aspiration of oropharyngeal and gastric secretions, which is the main mechanism of ventilator-associated pneumonia. It is a low-risk, evidence-supported component of ventilator bundles.

Question 40Patient Management and Treatment Planning

A patient with decompensated heart failure has a serum sodium of 128 mmol/L and signs of volume overload. What is the most appropriate initial fluid strategy?

  1. Free water administration
  2. Rapid correction of sodium with hypertonic saline
  3. Fluid restriction with diuresis Correct answer.
  4. Aggressive intravenous normal saline

Explanation

Hyponatremia in decompensated heart failure is typically dilutional from volume overload, so treatment is fluid restriction and diuresis rather than saline. Overly rapid correction risks osmotic demyelination and is reserved for symptomatic severe cases.

Question 41Patient Management and Treatment Planning

Which is the most appropriate initial management for a patient with an acute exacerbation of COPD and a pH of 7.28 with hypercapnia?

  1. Noninvasive positive pressure ventilation with controlled oxygen Correct answer.
  2. Immediate intubation
  3. Oral antibiotics alone
  4. High-flow oxygen to maintain saturation at 100%

Explanation

Acidotic hypercapnic respiratory failure in COPD is best managed initially with noninvasive ventilation plus titrated oxygen targeting a saturation of about 88 to 92 percent. This reduces intubation rates and mortality when applied early.

Question 42Patient Management and Treatment Planning

A patient is admitted with a suspected acute ischemic stroke 2 hours after symptom onset. Which action is essential before considering thrombolysis?

  1. Lower blood pressure to below 120/80
  2. Start therapeutic anticoagulation
  3. Obtain a noncontrast head CT to exclude hemorrhage Correct answer.
  4. Administer aspirin immediately

Explanation

Noncontrast head CT is required to exclude intracranial hemorrhage before thrombolysis, since giving a thrombolytic to a bleeding patient is catastrophic. Other measures such as glucose and blood pressure assessment are also checked but do not replace imaging.

Question 43Patient Management and Treatment Planning

A 70-year-old on furosemide presents with confusion and a sodium of 118 mmol/L. Which factor most increases the risk of osmotic demyelination during correction?

  1. Mild renal impairment
  2. Use of isotonic saline
  3. Rapid correction of chronic hyponatremia Correct answer.
  4. Presence of hyperkalemia

Explanation

Osmotic demyelination occurs mainly when chronic hyponatremia is corrected too quickly, so correction limits are set and monitored closely. Chronicity and rapid rise are the key risk determinants.

Question 44Patient Management and Treatment Planning

Which laboratory finding best supports a diagnosis of iron deficiency anemia in a patient with chronic inflammation?

  1. Low serum ferritin with low transferrin saturation Correct answer.
  2. Elevated transferrin saturation
  3. Elevated ferritin
  4. Normal ferritin with high transferrin saturation

Explanation

Ferritin is an acute-phase reactant and can be falsely normal or high in inflammation, but a low ferritin with low transferrin saturation still supports iron deficiency. In inflammatory states, combining ferritin with saturation improves diagnostic accuracy.

Question 45Patient Management and Treatment Planning

A patient with cirrhosis and ascites is started on spironolactone and furosemide. Which monitoring parameter is most important to check after initiation?

  1. Serum amylase
  2. Serum potassium and renal function Correct answer.
  3. Thyroid-stimulating hormone
  4. Prostate-specific antigen

Explanation

Spironolactone can cause hyperkalemia and both diuretics can impair renal function, so potassium and creatinine should be monitored after starting therapy. This is especially important in cirrhosis with reduced effective circulating volume.

Question 46Patient Management and Treatment Planning

A patient with suspected community-acquired pneumonia has a CURB-65 score of 3. What is the most appropriate disposition?

  1. Observe in the emergency department for 2 hours and discharge
  2. Discharge home with oral antibiotics
  3. Treat as an outpatient with a single dose of azithromycin
  4. Admit to the hospital for intravenous antibiotics and monitoring Correct answer.

Explanation

A CURB-65 score of 3 indicates severe pneumonia with high mortality, warranting hospital admission and often intensive monitoring with intravenous antibiotics. Outpatient management is reserved for low scores.

Question 47Patient Management and Treatment Planning

Which is the most appropriate first-line treatment for a patient with an acute gout flare and normal renal function?

  1. Colchicine, NSAIDs, or corticosteroids Correct answer.
  2. Allopurinol initiation alone
  3. Low-dose aspirin
  4. Probenecid

Explanation

Acute gout flares are treated with anti-inflammatory agents such as colchicine, NSAIDs, or corticosteroids, chosen based on comorbidities. Urate-lowering therapy is generally not started during a flare unless already indicated and continued.

Question 48Patient Management and Treatment Planning

A patient with a mechanical heart valve and new-onset atrial fibrillation requires anticoagulation. Which agent is most appropriate?

  1. Dabigatran
  2. Apixaban
  3. Warfarin Correct answer.
  4. Rivaroxaban

Explanation

Warfarin remains the anticoagulant of choice for mechanical heart valves because direct oral anticoagulants have failed to show noninferiority and are associated with more thromboembolic events in this population. INR monitoring is required.

Question 49Patient Management and Treatment Planning

A patient with acute pancreatitis and hypocalcemia develops tetany. Which is the most appropriate initial treatment?

  1. Intravenous calcium gluconate Correct answer.
  2. Magnesium restriction
  3. Oral calcium carbonate
  4. Oral vitamin D alone

Explanation

Symptomatic hypocalcemia with tetany requires intravenous calcium, typically calcium gluconate, with cardiac monitoring because rapid administration can cause arrhythmias. Oral therapy is insufficient for acute symptomatic hypocalcemia.

Question 50Patient Management and Treatment Planning

Which strategy best reduces the risk of contrast-induced acute kidney injury in a patient with an eGFR of 35 mL/min/1.73 m2 who needs a contrast-enhanced CT?

  1. Prophylactic hemodialysis after the scan
  2. Intravenous sodium bicarbonate at high dose
  3. High-dose N-acetylcysteine
  4. Use the lowest volume of low-osmolar contrast with adequate hydration Correct answer.

Explanation

The most effective preventive measures are minimizing contrast volume and ensuring adequate hydration, along with using low-osmolar contrast when possible. Routine dialysis or unproven pharmacologic prophylaxis is not recommended.