Your patient drunk 150 mL of Ice Tea. How many ounces is this?

A. Report by patient that something has given way: A patient reporting a "giving way" sensation is a classic early sign of dehiscence, indicating that the wound edges are separating.

B. Drainage that is odorous and purulent: Purulent (pus-like) and foul-smelling drainage suggests infection, not necessarily dehiscence. Infection can contribute to dehiscence, but it is not the defining feature.

C. Protrusion of visceral organs through a wound opening: Evisceration occurs when internal organs protrude through the incision. Dehiscence is partial or complete separation of the wound edges without organ protrusion.

D. Chronic drainage of fluid through the incision site: Persistent drainage suggests a fistula (abnormal connection between tissues), infection, or poor wound healing, rather than wound dehiscence.

A. AV Node: The AV node is responsible for delaying electrical impulses before they pass to the ventricles, but it does not generate the P wave. It affects the PR interval rather than the P wave itself.

B. SA Node: The SA (sinoatrial) node initiates electrical impulses and is responsible for atrial depolarization, which produces the P wave on an ECG. This makes it the correct answer.

C. Purkinje Fibers: The Purkinje fibers play a role in ventricular contraction (QRS complex), not in the formation of the P wave.

D. Bundle of HIS: The Bundle of HIS transmits impulses to the ventricles and is involved in ventricular depolarization, not atrial activity. It is not responsible for the P wave.