A client has undergone percutaneous coronary intervention (PCI) for the management of acute coronary syndrome. Following the procedure, the client develops a retroperitoneal hemorrhage. Which of the following nursing interventions is necessary if this occurs?

Correct Answer: D

Rationale: Retroperitoneal hemorrhage post-PCI requires notifying the provider and preparing for a CT scan or blood transfusion (D) to diagnose and treat bleeding, which can cause hypotension. Intubation (A) is unrelated, ambulation (B) worsens bleeding, and back pressure (C) is ineffective for internal hemorrhage. (Source: Document, p. 8-9)

Correct Answer: C

Rationale: Chordae tendineae (C) anchor AV valves (tricuspid, mitral) to papillary muscles in the ventricles, preventing prolapse into atria. The septum (A) divides ventricles, auricles (B) are atrial appendages, and endocardium (D) is the inner lining.

Correct Answer: D

Rationale: The T wave (D) represents ventricular repolarization. Atrial depolarization is P wave (A), atrial repolarization is obscured by QRS, and ventricular depolarization is QRS (C).

Correct Answer: B

Rationale: Frank-Starling’s law states that increased preload (more blood) stretches cardiac muscle, leading to a stronger contraction (B) and greater stroke volume. A, C, D contradict this.

Correct Answer: A

Rationale: Hydrostatic blood pressure (~35 mmHg) at the arterial end (A) forces water and nutrients out via filtration. Osmotic pressure (B) pulls water back, diffusion (C) moves gases, and active transport (D) is minimal here.