Edema Grading – Short Exam-Oriented Edema = interstitial fluid accumulation; assess by pitting over bony area. 1 (2 mm): mild pitting, rapid rebound → prolonged standing, pregnancy. 2 (4 mm): moderate pitting, disappears in seconds → early HF, renal cause, IV overload. 3 (6 mm): deep pitting, lasts longer → CHF, nephrotic syndrome, cirrhosis. 4 (≥8 mm): severe pitting, persists long → severe HF, renal failure, anasarca. Unilateral edema → suspect DVT; Bilateral edema → systemic cause. Daily weig