AACN CCRN-Adult Exam With Confidence Using Practice Dumps

A negative apnea test means that the patient does not breathe spontaneously when disconnected from the ventilator and exposed to a high level of carbon dioxide, which normally stimulates breathing. A negative apnea test is one of the criteria for brain death, as it indicates the loss of brainstem function. A positive vestibulo-ocular reflex, also known as the oculocephalic or doll’s eye reflex, means that the eyes move in the opposite direction of the head when the head is turned. A positive cough reflex means that the patient coughs when the trachea is stimulated. A negative cold caloric test means that the eyes do not move when cold water is injected into the ear canal. All these tests assess the integrity of the brainstem, and a positive result would exclude brain death. Therefore, the correct answer is B.

References:

• Diagnosis of brain death - UpToDate, under “Apnea testing”.
• Brain Death | Critical Care Medicine | JAMA | JAMA Network, under “How Is Brain Death Diagnosed?”.
• The 2023 AAN/AAP/CNS/SCCM Pediatric and Adult Brain Death/Death by …, under “Apnea Testing”.

The initial step in facilitating a change in practice regarding visiting hours should involve a literature search on family visitation practices. This allows the nurse to gather evidence-based information that can support any proposed changes. After gathering sufficient evidence, the nurse can then schedule an interdisciplinary team meeting to discuss the findings, consult with medical staff, and draft a new policy if necessary. References: CCRN Exam Handbook, AACN, page 35, section on Professional Caring and Ethical Practice.

Takotsubo cardiomyopathy, also known as stress-induced cardiomyopathy or "broken heart syndrome," is characterized by transient left ventricular dysfunction often precipitated by significant emotional or physical stress. The key findings of chest pain and ST elevation without significant coronary artery disease, along with left ventricular dysfunction and apical ballooning observed on imaging, are classic for takotsubo cardiomyopathy. This condition is often reversible and is associated with a temporary reduction in the heart's pumping ability, indicated by the reduced ejection fraction (EF) of 35%. References: =

• American Association of Critical-Care Nurses (AACN). (2024). CCRN Exam Handbook. Retrieved from AACN CCRN Exam Handbook
• Adult CCRN/CCRN-E/CCRN-K Certification Review Course Online. AACN