COMLEX Level 1 key terms

Altered or impaired function of skeletal, arthrodial, and myofascial structures with related vascular, lymphatic, and neural elements. It is diagnosed by palpation and motion testing rather than imaging, and it is the primary indication for osteopathic manipulative treatment.

The four palpatory criteria used to document somatic dysfunction: Tissue texture change, Asymmetry, Restriction of motion, and Tenderness. Documenting at least one abnormality per region supports coding and treatment decisions.

Rules describing how the spine moves. In neutral mechanics (type I), sidebending and rotation occur in opposite directions; in non-neutral mechanics (type II), they occur in the same direction, typically at a single segment.

A reflex arc in which afferent input from a diseased organ increases excitability in its spinal cord segment, producing muscle spasm, tenderness, and tissue texture change in the segmentally related somatic region.

Small, firm, tender nodules felt in deep fascia and muscle that osteopathic tradition associates with lymphatic congestion from a specific organ. They are treated with sustained soft-tissue pressure or articulation.

A tender nodule within a taut band of skeletal muscle that reproduces the patient's pain when compressed and may show a local twitch response; it is distinct from a tender point.

A localized, exquisitely tender area in muscle or fascia that is painful on palpation but lacks the taut band of a trigger point; widespread tender points are characteristic of fibromyalgia.

An osteopathic technique in which the patient voluntarily contracts a specific muscle against a controlled counterforce from the physician, then relaxes, allowing shortened tissue to lengthen and joint motion to improve.

High-velocity, low-amplitude treatment: a rapid, short thrust through a restrictive barrier to restore joint motion. It requires a firm end-feel and screening for contraindications such as fracture, instability, or severe osteoporosis.

A passive positional-release technique in which the patient is held in a position of comfort that minimizes the tender point for about ninety seconds, then slowly returned to neutral to reset muscle spindle reflexes.

A gentle palpatory approach that assesses the cranial rhythmic impulse and the motion of cranial bones and dural membranes, with treatment intended to restore balance; supporting evidence is limited and debated.

A rhythmic osteopathic technique that alternately compresses and releases the thorax, abdomen, or extremities to promote lymph and venous return; used adjunctively in edema, respiratory congestion, and infection.

A systematic regional palpatory examination, usually performed seated, supine, and prone, that assesses tissue texture, asymmetry, motion restriction, and tenderness, documenting somatic dysfunction before and after manipulative treatment.

A standard progress-note format: Subjective (the patient's history and complaints), Objective (examination findings and data), Assessment (diagnosis and clinical reasoning), and Plan (treatment, testing, and follow-up).

A mandatory verbal pause immediately before an invasive procedure in which the team confirms patient identity, procedure, site and side, allergies, and antibiotic prophylaxis in order to prevent wrong-site errors.

Practices that keep a field free of microorganisms during invasive procedures, including hand hygiene, sterile gloves, gowns and drapes, and avoiding contact with non-sterile surfaces.

Needle insertion into the subarachnoid space at the L3-L4 or L4-L5 interspace, below the conus medullaris; it is avoided when intracranial pressure is elevated or coagulopathy is present.

Symptoms or signs suggesting serious underlying disease, such as fever, unexplained weight loss, night pain, neurologic deficit, or bowel and bladder change, that require urgent evaluation before manipulative treatment is offered.

Presystemic elimination of an orally administered drug by gut wall and liver before it reaches the systemic circulation, which lowers oral bioavailability and can make an oral dose far less potent than an intravenous one.

The ratio of the dose producing toxicity to the dose producing the desired effect; a narrow index means small changes in dose or absorption can cause toxicity, so drug levels often require monitoring.

The number of patients who must receive an intervention for one additional patient to benefit. It is the reciprocal of the absolute risk reduction, so lower values indicate greater clinical benefit.

The probability of a given test result in people with the disease divided by the probability in people without it; it shows how much a result raises or lowers the odds of disease.

Plan-Do-Study-Act: a rapid-cycle improvement method in which a small change is planned, tested, measured, and then adopted, adapted, or abandoned based on the results.

A structured communication format (Situation, Background, Assessment, Recommendation) that conveys clinical information concisely during handoffs, telephone calls, and escalation of care.

A communication technique in which the clinician asks the patient to explain instructions in their own words, confirming comprehension and exposing misunderstandings that a simple question about understanding would miss.

A collaborative conversation style that strengthens a patient's own motivation for change using open questions, affirmation, reflective listening, and summarizing, rather than persuasion or confrontation.

A process in which clinician and patient discuss treatment options, benefits, harms, and uncertainties and then agree on a plan consistent with the patient's values and preferences.

A six-step framework for delivering bad news: Setting up the conversation, assessing the patient's Perception, obtaining Invitation, giving Knowledge, responding to Emotion with empathy, and providing Strategy and Summary.

A trained bilingual professional who conveys meaning accurately between clinician and patient; using untrained family members or staff risks errors, lost confidentiality, and poorer clinical outcomes.

The process of explaining an intervention's nature, risks, benefits, and alternatives, including no treatment, and confirming that the patient has capacity and agrees voluntarily; it is both an ethical and legal requirement.

The duty to protect identifiable patient health information from unauthorized disclosure, with limited exceptions such as patient authorization, mandated reporting, and threats of serious harm to others.

A situation in which financial or personal interests could improperly influence clinical or research judgment; it must be disclosed and managed, often by declining gifts or recusing oneself from decisions.

A health condition, such as substance use disorder, burnout, or psychiatric illness, that compromises a physician's ability to practice safely; colleagues should intervene and refer to a physician health program.

Legally required disclosure to authorities of specified findings, such as child or elder abuse, certain communicable diseases, and gunshot wounds, which overrides ordinary confidentiality obligations.

A primary care model in which a personal physician leads a team delivering comprehensive, coordinated, accessible, and continuous whole-person care, supported by quality measurement and payment reform.

A group of providers held jointly responsible for the quality and total cost of care for an assigned population, sharing in savings or losses against spending benchmarks.

An unexpected occurrence involving death or serious physical or psychological harm, such as wrong-site surgery, that requires immediate investigation and analysis of underlying system failures.

A structured, systems-oriented review conducted after an adverse event that identifies underlying process failures and produces action plans, rather than assigning blame to one individual.

An organizational approach that separates human error, at-risk behavior, and reckless conduct, encouraging staff to report mistakes while still holding people accountable for knowingly unsafe choices.

Programs and practices that improve antimicrobial prescribing, selecting the right drug, dose, and duration to cure infection, reduce adverse effects and cost, and limit the emergence of resistance.