UNMC Nursing Pathophysiology 2 Exam 4 Questions and Verified Answers | Passed | A+
pH ratio : bicarbonate/carbonic acid (base/acid) Three Mechanisms Regulating Acid-Base Balance : 1. Plasma buffer system 2. Respiratory system 3. Renal system Plasma buffer systems : work fast! -HCO3-, H2CO3 -protein buffers -phosphate -cellular ion exchange mechanism 2 How does the respiratory system regulate acid-base balance? : Regulate retention or elimination of CO2 through changes in rate of ventilation. How does the renal system regulate acid-base balance? : kidneys either reabsorb or secrete more bicarbonate or hydrogen ions normal blood pH : 7.35-7.45 normal pCO2 : 35-45 normal HCO3 : 22-28 Etiology of respiratory acidosis : anything depressing ventilation or gas exchange, respiratory disorder, lung disease 3 Initial ABGs respiratory acidosis : pH: Low (7.35) pCO2: High (45) HCO3: Normal (22-28
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