Complete Nclex Mastery Deck: 100 High-Yield Questions With An

COMPLETE NCLEX MASTERY DECK: 100 HIGH-YIELD QUESTIONS WITH ANSWERS & RATIONALES ESSENTIAL FOR NURSING EXCELLENCE - CARDIAC, PHARMACOLOGY, PRIORITIZATION & BEYONDNCLEX MASTERY 1. A patient has pH 7.30, PaCO 55, HCO 26. What is the acid-base disorder? A. Metabolic acidosis B. Respiratory acidosis C. Metabolic alkalosis D. Respiratory alkalosis Answer: B. Respiratory acidosis Rationale: The pH is 45 (elevated), indicating a respiratory cause. The HCO is normal (22-26), so there is no metabolic compensation. This is acute, uncompensated respiratory acidosis. 2. A patient with chest pain is prescribed nitroglycerin. Which assessment finding is a contraindication for administration? A. Heart rate 98 bpm B. Blood pressure 88/50 mmHg C. Respiratory rate 20/min D. Oxygen saturation 95% Answer: B. Blood pressure 88/50 mmHg Rationale: Nitroglycerin is a potent vasodilator that can cause severe hypotension. It is contraindicated in patients with systolic BP 30 mmHg below baseline. Administering nitroglycerin to a hypotensive patient could precipitate cardiovascular collapse. 3. A patient is 2 hours post-cardiac catheterization via the right femoral artery. The nurse notes the right foot is cool, pale, and the dorsalis pedis pulse is absent. What is the priority action?A. Document the findings B. Elevate the right leg C. Notify the healthcare