504 Midterm Flashcards
Pass the midterm
all of the following represent complications from the use of a roller pump except
a- miscalibration
b-runaway pump
c-tubing fracture
d-spontaneous retrograde flow
D is answer
The pt. is experiencing nonmechanical blood loss following protamine, platelets and fresh frozen plasma administration. What is likely the cause
a- administer factor 7
b- adminster heparin
c- administer amicar
d- administer DDAVP
D is the answer
While administering cold blood cardioplegia, the blood begins to clump and the cardioplegia line pressure suddenly rises, what is likely the cause
a- cold agglutinins
b-coagulation
c-cardioplegia line clamped at the field
d- significant coronary artery disease
A is the answer
The patients ACT is low following a 45,000 usp loading dose of heparin, What should be the next course of action
a- adminster thrombate
b- administer heparin
c- administer FFP
d- employ hemodilution
B- is the answer
The pt is refractory to bypass termination, what is the first course of action
a-
b-
c-
d-
Define IHSS ( idiopathic hypertrophic subaortic stenosis
Define TAPVR (total anomalous pulmonary venous return
Define Ebsteins repair
Where there is a repair/ replacement on the tricuspid valve
Define Konno
a method of repairing congenital tunnel-type subaortic stenosis and narrowing of the left ventricular-aortic junction by aortoventriculoplasty and prosthetic valve replacement
Co2 is how many times more soluble in blood than oxygen
20 times
what is the average blood volume of an adult thats 80 kg males
5.5 L
what is the total body water of an average adult male
25 L
what gas law indicates that if the temperature remains constant the volume would vary inversely with the pressure
Charles (temperature and volume are proportional)
Which law or principle of physics show the relationship among pressure, flow, and resistance
Poiseuille
At sea level oxygen comprises approximately what percentage of air
21
Which of the following would reduce the resistance through an arterial cannula
decreasing perfusate viscosity
Each hemoglobin molecule can carry how many molecules of oxygen
four (4)
The relationship between pressure drop and tubing length is
Direct
Which of the following is considered isotonic
Normal Saline (0.9 %)
What would be the priming solution of choice for a renal insufficiency pt. with hyperkalemia
Normal Saline ( it does not have potassium)
Plasmalyte and Lactated ringers have potassium
WHich of these priming solutions is PH balanced to approximately 7.4
Plasmalyte
what is a standard potassium concentration in mEq/L of extracellular cardioplegia solution for myocardial induction
20
What condition is associated with an elevated red blood cell count
polycythemia
What is the result of exposing red blood cells to a hypertonic solution
crenation
What is the approximate blood volume index in ml/Kg for an adult male
70
What is the approximate volume of one foot of 1/2 in PVC tubing
40 ml
What is the approximate volume for 1/4 in tubing
10
What is a measure of density or hardness of tubing
Durometer
what type of surface modification utilizes heparin as its biocompatible surface
Carmeda
What is the smallest filter on a CPB circuit
Gas filter ( 0.5 microns )
What CPB component had the greatest surface area
oxygenator
What CPB circuit configuration handles gross air the best
roller-pump/ open
What is the disadvantage of giving drugs through the CPB manifold
Gaseous Micro-emboli
What is an example of an integrated arterial line filter, oxygenator and the heat exchanger
Terumo Fx
What is the best measure to avoid exposure to blood borne pathogens
treat all blood and body fluids as if they were infectious
