Summary NUR2392 Exam 2 Study Guide

NUR2392 Exam 2 Study Guide HYPERKALEMIA Role: K+ is responsible for nerve impulse conduction & muscle contractions Normal Range 3.5-5.0 mEq/L............ > 5.0 mEq/L > K+ in ECF Causes: The body “ CA RED” too much for K+ Cellular movement of K+ from ICF to ECF (tissue damage, burn, acidosis) Adrenal insufficiency (Addison’s disease) Renal failure Excessive K+ intake Drugs (K+ sparing such as Aldactone, Triamterene, ACE inhibitors, NSAIDs) S/S: “ MURDER” Muscle weakness Urine production (low or absent) Respiratory failure (muscle weakness) Decreased cardiac contractility (weak pulse, ↓ BP) Early signs of muscle twitching (muscle twitching, cramps-early) (flaccid-late) Rhythm changes (tall peaked T wave, flat or absent P wave, wide QRS & prolonged PR interval)