Cardiovascular system/Respiratory system Flashcards
The route of blood
Inferior and Superior vena cava Right atrium Right ventricle Pulmonary semilunar valve Lungs Pulmonary veins Left atrium Bicuspid valve Left ventricle Aortic semilunar valve Aorta
Cardiac Output (Q), Stroke Volume(SV), EF, Max HR
Q(L/min) = SV (mL) x HR (beats/min)
SV = LVEDV(mL) - LVESV (mL)
EF (%) = SV(mL)/LVEDV(mL)
Max HR = 220-age
Systolic vs. Diastolic blood pressure
Systolic BP refers to maximum pressure observed in the arteries during the contraction phase of the ventricle (120)
Diastolic BP is the minimum pressure observed in the arteries during the relaxation phase of the ventricle (80)
Myocardial & Cardiac Arrest
Occurs when blood stops flowing properly to a part of the heart, and the heart muscle is injured because it is not receiving enough oxygen.
A condition in which the heart suddenly and unexpectedly stops beating. If this happens, blood stops flowing to the brain and other vital organs.
Electrocardiograms (ECG)
T-Wave - end of ventricular diastole, ventricles are charging for the next contraction
P-Wave - the beginning of ventricular systole
QRS - the end of systole & beginning of diastole
What is ventilation formula
VE (L/min) = VT(L) x f (breaths/min)
normal = 0.5L (12 breaths)
Gas exchange
The delivery of oxygen from the lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs. It occurs in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.
Chambers of the heart
4 hollow chambers Right Atrium Right Ventricle Left Atrium Left Ventricle