DHA Study Guide 2026

A sentinel event is an unexpected incident resulting in death or serious harm to a patient, requiring immediate root cause analysis and corrective action under DHA quality standards.

Lead aprons are designed to attenuate scattered X-rays that reach personnel outside the primary beam, reducing gonadal and abdominal dose during fluoroscopic procedures.

Antimicrobial stewardship programs aim to optimize antimicrobial therapy: ensuring patients receive the right antibiotic, at the right dose, via the right route, for the right duration. This reduces selective pressure driving resistance, minimizes adverse effects (C. diff, renal toxicity), and reduces costs without compromising patient outcomes.

Patient confidentiality may be broken without consent when: (1) legally required (mandatory reportable diseases, court orders, child protection laws), (2) serious and imminent harm to an identifiable third party exists that cannot be prevented otherwise, or (3) the patient lacks capacity and disclosure is in their best interest.

CDC doffing sequence begins with gloves (most contaminated), then goggles/face shield, gown, and finally mask/respirator.

Triage in EMS is a critical process used to quickly assess patients and prioritize their care based on the severity of their condition and the likelihood of survival. In situations with multiple casualties or limited resources, triage ensures that those with the most life-threatening injuries or illnesses receive immediate attention, maximizing the overall number of lives saved. It's about making efficient and ethical decisions under pressure.