Which statement best defines breach of duty in medical malpractice?

• A. A deliberate act of harm
• B. A pre-existing condition
• C. A patient noncompliance
• D. Failure to meet the standard of care

Answer: (D)

Breach of duty means a clinician failed to meet the standard of care expected for a reasonably competent practitioner in the same situation. The standard of care is what a typical, prudent professional would do given current knowledge and practice guidelines. When a provider’s actions fall below that standard and that shortfall causes harm, it constitutes a breach of duty. This is not about intentional harm, which would be a different kind of tort, nor is it simply about a patient’s preexisting condition or about patient noncompliance—these factors can influence outcomes but do not by themselves define a breach of professional duty.