The nurse notices a strong ______ pulse in the patient's neck, which could indicate aortic regurgitation.

A strong, bounding carotid pulse in the neck (Corrigan's pulse) is a characteristic finding in aortic regurgitation. The carotid artery runs through the neck and can show exaggerated pulsations when there is significant backflow through an incompetent aortic valve.

Aortic Regurgitation (AR)
- Definition: Backward flow of blood from aorta into left ventricle
- Also called: Aortic insufficiency
- Key signs:
* Corrigan's pulse (water-hammer pulse)
* Wide pulse pressure
* Diastolic murmur
* Displaced point of maximal impulse (PMI)

Carotid Pulse Assessment
- Location: Lateral neck between larynx and sternocleidomastoid
- Normal characteristics: Regular, smooth, equal bilaterally
- Abnormal findings:
* Bounding pulse: AR, hyperdynamic states
* Weak pulse: Shock, stenosis
* Unequal pulses: Arterial obstruction

Clinical Manifestations of AR
- Early symptoms:
* Palpitations
* Dyspnea on exertion
* Fatigue
- Late symptoms:
* Orthopnea
* Paroxysmal nocturnal dyspnea
* Angina
* Heart failure symptoms