Basic Sciences Exam study guide perfusion
UPDATED ACTUAL Questions and
CORRECT Answers
the major cation found in extracellular fluid - CORRECT ANSWER Na+
primary structural unit of proteins - CORRECT ANSWER L-amino acids
which clotting factor is activated by contact with foreign surfaces, roughened vascular walls, and
platelet aggregates? - CORRECT ANSWER XII
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 - CORRECT ANSWER A) limit clotting by splitting
fibrin
normal arterio0venous O2 difference is approximately ____ in mmHg? - CORRECT
ANSWER 40 mmHg
at a given p02, increasing CO2 results in:
A) more 02 bound to hemoglobin
B) less 02 bound to hemoglobin
C) no effect - CORRECT ANSWER less 02 bound to the hemoglobin
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 - CORRECT ANSWER A)
CO2 becomes more soluble and PaCO2 decreases
in 85 - 95% of patients the circumflex artery supplies what portion of the heart with blood? -
CORRECT ANSWER the lateral and posterior surface of the LV
the LAD arises from the? - CORRECT ANSWER Left main coronary artery
the diagonal coronary arteries supply? - CORRECT ANSWER antero-lateral wall of LV
in 55% of patients, which coronary artery supplies blood to the SA node - CORRECT
ANSWER right
a characteristic of leukocytes is that they are:
A) smaller than RBC
B) larger than platlets
C) uniform in shape - CORRECT ANSWER b) larger than platelets
the main function of an enzyme? - CORRECT ANSWER increase the rate of a
biochemical reaction
the conformation change of platelets that occurs when exposed to foreign surface is? -
CORRECT ANSWER globular with pseudopodia
classical pathway of complement system is activated by - CORRECT ANSWER antibody-
antigen reactions
which is not normal route for blood returning to the heart?
,A) thebesian veins
B) pulmonary veins
C) bronchial veins - CORRECT ANSWER C) bronchial
the effect of calcium channel blocking is - CORRECT ANSWER a marked decrease in
transmembrane calcium current
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 - CORRECT ANSWER C) a-fib with rapid ventricular response
persantine (dipyridamole) interferes with the function of what? - CORRECT
ANSWER platelets
the cardiovascular effects of Inocor (amrinone) include - CORRECT ANSWER decreased
pulmonary artery pressure
which anesthetic agent has the shortest duration of action - CORRECT ANSWER propofol
(diprivan)
drug of choice to protect the brain to global ischemia when administered prior to an ischemic
episode (circ arrest) - CORRECT ANSWER pentothal (thiopental)
digitalis preparation is commonly used to - CORRECT ANSWER increase myocardial
contractility and control atrial arrhythmia
, 1/4 inch tubing = ? cc per foot?
how many rotations to create 100cc? - CORRECT ANSWER 9.6 cc, 8x around
3/8 inch tubing = ? cc per foot
how many rotations to create 100 cc? - CORRECT ANSWER 21.6 cc, 4x around
1/2 inch tubing = ? cc per foot,
how many rotations to create 100 cc? - CORRECT ANSWER 45.9 cc, 2x around
if K+ is too high, name 8 options to bring it down - CORRECT 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)
rule of 9's for blood distribution - CORRECT ANSWER head, arms (2x, 18), chest,
abdomen, upper back, lower back, front of legs, back of legs
estimate blood volumes:
0-10
10-25
25-45 - CORRECT ANSWER 85
80
70
UPDATED ACTUAL Questions and
CORRECT Answers
the major cation found in extracellular fluid - CORRECT ANSWER Na+
primary structural unit of proteins - CORRECT ANSWER L-amino acids
which clotting factor is activated by contact with foreign surfaces, roughened vascular walls, and
platelet aggregates? - CORRECT ANSWER XII
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 - CORRECT ANSWER A) limit clotting by splitting
fibrin
normal arterio0venous O2 difference is approximately ____ in mmHg? - CORRECT
ANSWER 40 mmHg
at a given p02, increasing CO2 results in:
A) more 02 bound to hemoglobin
B) less 02 bound to hemoglobin
C) no effect - CORRECT ANSWER less 02 bound to the hemoglobin
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 - CORRECT ANSWER A)
CO2 becomes more soluble and PaCO2 decreases
in 85 - 95% of patients the circumflex artery supplies what portion of the heart with blood? -
CORRECT ANSWER the lateral and posterior surface of the LV
the LAD arises from the? - CORRECT ANSWER Left main coronary artery
the diagonal coronary arteries supply? - CORRECT ANSWER antero-lateral wall of LV
in 55% of patients, which coronary artery supplies blood to the SA node - CORRECT
ANSWER right
a characteristic of leukocytes is that they are:
A) smaller than RBC
B) larger than platlets
C) uniform in shape - CORRECT ANSWER b) larger than platelets
the main function of an enzyme? - CORRECT ANSWER increase the rate of a
biochemical reaction
the conformation change of platelets that occurs when exposed to foreign surface is? -
CORRECT ANSWER globular with pseudopodia
classical pathway of complement system is activated by - CORRECT ANSWER antibody-
antigen reactions
which is not normal route for blood returning to the heart?
,A) thebesian veins
B) pulmonary veins
C) bronchial veins - CORRECT ANSWER C) bronchial
the effect of calcium channel blocking is - CORRECT ANSWER a marked decrease in
transmembrane calcium current
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 - CORRECT ANSWER C) a-fib with rapid ventricular response
persantine (dipyridamole) interferes with the function of what? - CORRECT
ANSWER platelets
the cardiovascular effects of Inocor (amrinone) include - CORRECT ANSWER decreased
pulmonary artery pressure
which anesthetic agent has the shortest duration of action - CORRECT ANSWER propofol
(diprivan)
drug of choice to protect the brain to global ischemia when administered prior to an ischemic
episode (circ arrest) - CORRECT ANSWER pentothal (thiopental)
digitalis preparation is commonly used to - CORRECT ANSWER increase myocardial
contractility and control atrial arrhythmia
, 1/4 inch tubing = ? cc per foot?
how many rotations to create 100cc? - CORRECT ANSWER 9.6 cc, 8x around
3/8 inch tubing = ? cc per foot
how many rotations to create 100 cc? - CORRECT ANSWER 21.6 cc, 4x around
1/2 inch tubing = ? cc per foot,
how many rotations to create 100 cc? - CORRECT ANSWER 45.9 cc, 2x around
if K+ is too high, name 8 options to bring it down - CORRECT 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)
rule of 9's for blood distribution - CORRECT ANSWER head, arms (2x, 18), chest,
abdomen, upper back, lower back, front of legs, back of legs
estimate blood volumes:
0-10
10-25
25-45 - CORRECT ANSWER 85
80
70
