TBL - Metabolic Acid-Base Disturbance Flashcards
1
Q
A post-operative surgical patient had a nasogastric tube in for three days. The nurse caring for the patient noticed that after too much suction of gastric content using the nasogastric tube, the patient fell sick. Her blood pH was 7.50. Serum bicarbonate level was 38 mmol/L, pCO2 was 49 mmHg. Which of the following acid-base disorder developed in this patient due to nasogastric suction?
A. Uncompensated respiratory alkalosis
B. Uncompensated metabolic alkalosis
C. Partially compensated respiratory acidosis
D. Partially compensated metabolic alkalosis
A
D. Partially compensated metabolic alkalosis
2
Q
Body buffers are the first line defence against change in the pH of the blood. Plasma proteins act as buffers. Which of the following amino acids in the plasma protein is mainly responsible for the buffering action of proteins at physiological pH? A. Lysine B. Histidine C. Aspartic acid D. Leucine
A
B. Histidine
3
Q
What is the normal range of bicarbonate ion concentration?
A
22 - 26 mmol/L
