NCLEX-RN Left vs Right Failure Cheat Sheet (Free Printable)

If you are studying for the NCLEX-RN, expect heart failure to show up in your prep: over 6 million cases in the US, and a leading cause of hospitalization in adults over 65. Exam writers build scenario questions around it, and those scenarios hinge on one thing: which ventricle is failing? This cheat sheet is organized around exactly that question, in three color-coded lanes.

Left-sided failure means blood backs into the lungs while forward flow weakens, so you see dyspnea, a dry hacking cough, fatigue on exertion, and compensatory tachycardia and tachypnea. Right-sided failure backs blood into the body instead, producing swelling in the ankles, legs, and abdomen, a bloated or hard stomach, appetite loss with nausea, and nocturia. Biventricular failure involves both sides at once, with symptoms that come and go and worsen over time, plus aggravators worth recognizing: anemia, hyperthyroidism, alcohol, and rapid atrial fibrillation. Each entry cites the Merck Manual or Cleveland Clinic, and the sheet carries the reminder that findings and thresholds vary by reference and patient, so follow facility protocol and provider orders. Skim a lane, connect each symptom to its mechanism, then carry that pattern into your practice questions.

195 words. Every clinical claim and number traces to the JSON (column subs, row fx/note fields, the "Scale" row, and the disclaimer); no facts added from memory.

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Findings and thresholds vary by reference and patient - follow facility protocol and provider orders.

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