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Cardiac A & P HCCRT

QuestionAnswer
What are the four chambers? Right Atrium, Right Ventricle, Left Ventricle, Left Atrium
What are the heart valves? Pulmonary Semilunar Valve, Aortic Valve, Left AV(Mitral) valve, Right AV(Tricuspid) Valve
Where is the Pulmonary semilunar Valve? Allows bl flow from the R ventricle to the pulmonary artery sending bl to the lungs
What are the pulse sites? Temporal, Facial, Carotid, Brachial, Radial, Femoral, Popliteal, Posterior Tibial, Dorsal Pedal
Cardiac Output The total amount of bl discharged from the ventricles per minute ( 3 decimal places to the right)
Formula for Cardiac Output SV X HR Normal range: 4-8L/Min
Formula for Cardiac Index CO/ BSA
Normal Range for Cardiac Index 2.5-4.2 L/min
Formula for Stroke Volume CO/HR
Normal Range for Stroke Volume 40-80 ml
Normal Range for Central Venous Pressure (CVP) 0-8 mmHg
Normal Range for Right Atrial Pressure (RAP) 0-8 mmHg
Normal Range for Mean Pulmonary Artery Pressure (PA) 9-18 mmHg
Pulmonary Capillary Wedge Pressure (PCWP) 4-12 mmHg
Define Stroke Volume The amount of blood ejected from the ventricle during each contraction
What is hematocrit? The percentage of RBCs in relation to the total volume of blood
Normal Hematocrit for Males 45%
Normal Hematocrit for Females 42%
Normal Hemoglobin for Males 14-18 gm/100 ml of blood
Normal Hemoglobin for Females 12-16 gm/100 ml of blood
Blood cells are what % of total bl volume? 45%
Plasma makes up what % of total bl volume? 55%
What is trabeculae carneae? A cord tissue that serves as a supporting structure by forming a septum that extends into an organ from its wall or capsule.
Mean Arterial Pressure (MAP)Formula Systolic pressure + (Diastolic X 2)/ 3
What is mean arterial pressure? Average of Pressure pushing through systemic circulation
MAP <60 mmHg... circulation to vital organs compromised
Map >100 mmHg after vascular surgery or aneurysms... may need antihypertensive agents and vasodilators
What is pulse pressure? Difference between the diastolic and systolic pressure
Decreased pulse pressure leads to... decrease in diastolic pressure in patients developing hypovolemic shock
Pulse pressure is first sign for what? blood volume loss
Normal range for Arterial Blood Pressure 120/80 mmHg
What do arteries do? Carry blood away from the heart; "Resistance vessels"
What do veins do? Hold large amt of bl with very little pressure change; "Capacitance vessels"
Inotropism How strong the heart beats
Positive Inotropism Increase in myocardial contractility
Negative Inotropism Decrease in myocardial contractility
What would an Inotropic drug do? Increase the strength of contraction
Chronotropism Rate of myocardial contraction
Positive Chronotropism Increase in the rate of myocardial contraction
Negative Chronotropism Decrease in the rate of myocardial contraction
What would a Chronotropism drug do? Increase the rate of contraction
Starling Law Ability of the heart to stretch and pump out more blood
Limit of Starlings Law If the heart is pushed beyond its ability to accommodate the inccreased blood supply and subsequent myocardial stretch the heart will go into failure; pulmonary edema decreases CO
Normal range of MAP 80-100 mmHg
Created by: sweetpea15kp