Acid Base and Blood Gas Analysis 1. pH - What’s the primary disturbance? 2. pCO2 - What’s the pCO2? 3. HCO3 - What’s the bicarb? Respiratory Acidosis - Airflow obstruction • COPD, asthma, ↓ Drive, Medications, Central, ↑ CO2 production Respiratory alkalosis drive • Hypoxemia • Pain/anxiety • Hepatic enceph • Pregnancy • Salicylates Metabolic Alkalosis - “BLVD PLACE” B - Bartter's L – Laxative V – Vomiting D - Diarrhea/diuretics P - Post-hypercapnea L - Licorice A - Alkali ingestion C - Contraction alkalosis E - Endocrine (Conn’s or Cushing’s) Metabolic Acidosis - non anion gap metabolic acidosis - anion gap metabolic acidosis Nick Mark MD @nickmmark #acidbase #workup #algorithm #diagnosis #acidosis #alkalosis #metabolic #respiratory #bloodgas #interpretation
