ABCP Practice Test Questions With Verified Answers

In 55% of patients, which coronary artery gives rise to blood supply for the S-A Node? A. right. B. circumflex. C. posterior descending. D. obtuse marginal. - Answer A Which of the following is a reported disadvantage of cerebral saturation monitoring using Near Infrared Spectroscopy (NIRS) Technology: A. Global ischemic events are not reflected in the measurements. B. Pulsatile perfusion pressure is required for accurate measurements. C. Catheter placement is required for continuous measurements. D. Extra-cranial blood saturation is included in the measurements. - Answer D The major cation found in extracellular fluid is: A. K+. B. Ca++. C. Mg++ D. Na+. - Answer D The primary structural units of proteins are: A. pyruvic acids. B. conjugated fatty acids. C. L-amino acids. D. ribonucleic acids. - Answer C Which clotting factor is activated by contact with foreign surfaces, roughened vascular walls, and platelet aggregates? A. V (Proaccelerin). B. XII (Hageman). C. VIII (Antihemophilic). D. X (Stuart-Prower). - Answer B The effect of plasmin is to: A. limit clotting by splitting fibrin. B. initiate the intrinsic pathway. C. cleave thrombin. D. activate the extrinsic pathway. - Answer A The normal arterio-venous oxygen difference is approximately: A. 7 mmHg. B. 40 mmHg. C. 5 volumes percent. D. 14 volumes percent. - Answer B Oxygen delivery will be decreased when a low venous oxygen tension and high venous oxyhemoglobin saturation are present due to: A. an increase in P50. B. a decrease in P50. C. metabolic alkalosis. D. metabolic acidosis. - Answer C A characteristic of the oxygen-dissociation curve for fetal hemoglobin is that: A. it is identical to the adult curve. B. it shifts to the right of the maternal curve. C. it is unrelated to the maternal curve. D. it shifts to the left of the maternal curve. - Answer D At a given pO2, increasing the pCO2 results in: A. more oxygen bound to the hemoglobin. B. less oxygen bound to the hemoglobin. C. no effect on the amount of oxygen bound to the hemoglobin. D. a decrease of P50. - Answer B A sample of blood cooled from 37ºC will undergo which of the following changes? A. CO2 becomes more soluble and PaCO2 decreases. B. CO2 becomes less soluble and pH decreases. C. CO2 solubility does not change, bicarbonate levels increase. D. CO2 solubility increases and base excess levels decrease. - Answer A If the diffusion coefficient for oxygen is 1, the diffusion coefficient for carbon dioxide is: A. 20.3. B. 37.5. C. 0.81. D. 0.20. - Answer A In 85-95% of patients, the circumflex artery supplies the: A. lateral aspect of the left ventricle. B. entire posterior surface of the left ventricle. C. posterior ventricular septum. D. anterior medial papillary muscle. - Answer A The left anterior descending coronary artery arises from the left: A. main coronary artery distal to the circumflex. B. main coronary artery distal to the first diagonal. C. main coronary artery. D. coronary ostium. - Answer C