perfusion Basic Sciences study guide Exam Questions with Correct
Answers (Grade A+)
Question 1: the major cation found in extracellular fluid
Answer: Na+
Question 2: primary structural unit of proteins
Answer: L-amino acids
Question 3: which clotting factor is activated by contact with foreign surfaces, roughened vascular
walls, and platelet aggregates?
Answer: XII
Question 4: the effect of plasmin is to:
A) limit clotting by splitting fibrin
B) initiate the intrinsic pathway
C) cleave thrombin
D) initiate the extrensic pathway
Answer: A) limit clotting by splitting fibrin
Question 5: normal arterio0venous O2 difference is approximately in mmHg?
Answer: 40 mmHg
Question 6: at a given p02, increasing CO2 results in:
A) more 02 bound to hemoglobin
B) less 02 bound to hemoglobin
C) no effect
Answer: less 02 bound to the hemoglobin
Question 7: a sample of blood cooled from 37 degrees C will undergo what changes?
A) CO2 becomes more soluble and PaCO2 decreases
B) CO2 becomes less soluble and pH decreases
C) CO2 solubility increases and base excess levels decrease
Answer: A) CO2 becomes more soluble and PaCO2 decreases
Question 8: in 85 - 95% of patients the circumflex artery supplies what portion of the heart with
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,blood?
Answer: the lateral and posterior surface of the LV
Question 9: the LAD arises from the?
Answer: Left main coronary artery
Question 10: the diagonal coronary arteries supply?
Answer: antero-lateral wall of LV
Question 11: in 55% of patients, which coronary artery supplies blood to the SA node
Answer: right
Question 12: a characteristic of leukocytes is that they are:
A) smaller than RBC
B) larger than platlets
C) uniform in shape
Answer: b) larger than platelets
Question 13: the main function of an enzyme?
Answer: increase the rate of a biochemical reaction
Question 14: the conformation change of platelets that occurs when exposed to foreign surface is?
Answer: globular with pseudopodia
Question 15: classical pathway of complement system is activated by
Answer: antibody- antigen reactions
Question 16: which is not normal route for blood returning to the heart?
A) thebesian veins
B) pulmonary veins
C) bronchial veins
Answer: C) bronchial
Question 17: the effect of calcium channel blocking is
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, Answer: a marked decrease in transmembrane calcium current
Question 18: celan (verapamil) is indicated for which of the following?
A) hypertentions refractory to high doses of beta-adrenergic blocking agents
B) sinus sick syndrome
C) a-fib with rapid ventricular response
D) cardiogenic shock
with coronary spasm
Answer: C) a-fib with rapid ventricular response
Question 19: persantine (dipyridamole) interferes with the function of what?
Answer: platelets
Question 20: the cardiovascular effects of Inocor (amrinone) include
Answer: decreased pulmonary artery pressure
Question 21: which anesthetic agent has the shortest duration of action
Answer: propofol (diprivan)
Question 22: drug of choice to protect the brain to global ischemia when administered prior to an
ischemic episode (circ arrest)
Answer: pentothal (thiopental)
Question 23: digitalis preparation is commonly used to
Answer: increase myocardial contractility and control atrial arrhythmia
Question 24: 1/4 inch tubing = ? cc per foot?
how many rotations to create 100cc?
Answer: 9.6 cc, 8x around
Question 25: 3/8 inch tubing = ? cc per foot
how many rotations to create 100 cc?
Answer: 21.6 cc, 4x around
Question 26: 1/2 inch tubing = ? cc per foot,
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, how many rotations to create 100 cc?
Answer: 45.9 cc, 2x around
Question 27: if K+ is too high, name 8 options to bring it down
Answer: 1) increase your sweep
2) give insulin
3) zbuff
4) bicarb
5) lasix
6) mannitol
8) dialysis
9) Ca++ (this protects the myocardium from the K, it does not reduce serum K)
Question 28: rule of 9's for blood distribution
Answer: head, arms (2x, 18), chest, abdomen, upper back, lower back, front of legs, back of legs
Question 29: estimate blood volumes:
0-10
10-25
25-45
Answer: 85
Question 30: estimate blood volumes:
>45 normal
> 45 thin
Answer: 65
Question 31: normal PT
Answer: 10-12 seconds
Question 32: normal PTT
Answer: 24-37 sec
Question 33: normal INR
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Answers (Grade A+)
Question 1: the major cation found in extracellular fluid
Answer: Na+
Question 2: primary structural unit of proteins
Answer: L-amino acids
Question 3: which clotting factor is activated by contact with foreign surfaces, roughened vascular
walls, and platelet aggregates?
Answer: XII
Question 4: the effect of plasmin is to:
A) limit clotting by splitting fibrin
B) initiate the intrinsic pathway
C) cleave thrombin
D) initiate the extrensic pathway
Answer: A) limit clotting by splitting fibrin
Question 5: normal arterio0venous O2 difference is approximately in mmHg?
Answer: 40 mmHg
Question 6: at a given p02, increasing CO2 results in:
A) more 02 bound to hemoglobin
B) less 02 bound to hemoglobin
C) no effect
Answer: less 02 bound to the hemoglobin
Question 7: a sample of blood cooled from 37 degrees C will undergo what changes?
A) CO2 becomes more soluble and PaCO2 decreases
B) CO2 becomes less soluble and pH decreases
C) CO2 solubility increases and base excess levels decrease
Answer: A) CO2 becomes more soluble and PaCO2 decreases
Question 8: in 85 - 95% of patients the circumflex artery supplies what portion of the heart with
Page 1
,blood?
Answer: the lateral and posterior surface of the LV
Question 9: the LAD arises from the?
Answer: Left main coronary artery
Question 10: the diagonal coronary arteries supply?
Answer: antero-lateral wall of LV
Question 11: in 55% of patients, which coronary artery supplies blood to the SA node
Answer: right
Question 12: a characteristic of leukocytes is that they are:
A) smaller than RBC
B) larger than platlets
C) uniform in shape
Answer: b) larger than platelets
Question 13: the main function of an enzyme?
Answer: increase the rate of a biochemical reaction
Question 14: the conformation change of platelets that occurs when exposed to foreign surface is?
Answer: globular with pseudopodia
Question 15: classical pathway of complement system is activated by
Answer: antibody- antigen reactions
Question 16: which is not normal route for blood returning to the heart?
A) thebesian veins
B) pulmonary veins
C) bronchial veins
Answer: C) bronchial
Question 17: the effect of calcium channel blocking is
Page 2
, Answer: a marked decrease in transmembrane calcium current
Question 18: celan (verapamil) is indicated for which of the following?
A) hypertentions refractory to high doses of beta-adrenergic blocking agents
B) sinus sick syndrome
C) a-fib with rapid ventricular response
D) cardiogenic shock
with coronary spasm
Answer: C) a-fib with rapid ventricular response
Question 19: persantine (dipyridamole) interferes with the function of what?
Answer: platelets
Question 20: the cardiovascular effects of Inocor (amrinone) include
Answer: decreased pulmonary artery pressure
Question 21: which anesthetic agent has the shortest duration of action
Answer: propofol (diprivan)
Question 22: drug of choice to protect the brain to global ischemia when administered prior to an
ischemic episode (circ arrest)
Answer: pentothal (thiopental)
Question 23: digitalis preparation is commonly used to
Answer: increase myocardial contractility and control atrial arrhythmia
Question 24: 1/4 inch tubing = ? cc per foot?
how many rotations to create 100cc?
Answer: 9.6 cc, 8x around
Question 25: 3/8 inch tubing = ? cc per foot
how many rotations to create 100 cc?
Answer: 21.6 cc, 4x around
Question 26: 1/2 inch tubing = ? cc per foot,
Page 3
, how many rotations to create 100 cc?
Answer: 45.9 cc, 2x around
Question 27: if K+ is too high, name 8 options to bring it down
Answer: 1) increase your sweep
2) give insulin
3) zbuff
4) bicarb
5) lasix
6) mannitol
8) dialysis
9) Ca++ (this protects the myocardium from the K, it does not reduce serum K)
Question 28: rule of 9's for blood distribution
Answer: head, arms (2x, 18), chest, abdomen, upper back, lower back, front of legs, back of legs
Question 29: estimate blood volumes:
0-10
10-25
25-45
Answer: 85
Question 30: estimate blood volumes:
>45 normal
> 45 thin
Answer: 65
Question 31: normal PT
Answer: 10-12 seconds
Question 32: normal PTT
Answer: 24-37 sec
Question 33: normal INR
Page 4
