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blood held back from an area. Leads to myocardial infection. caused by thrombotic occlusion of blood vessel or coronary artery disease
mitral valve prolapse
improper closure of the valve between the left atrium and ventricle during systole
sinoartial system that controls the heart rate. pacemaker of the heart that starts its beating
Electrocardiogram - record used to detect electrical changes in heart muscle as the heart beats.
short episodes of pallor and numbness in fingers and toes due to temporary constriction
patent ductus arteriosus
small duct between the aorta and pulmonary artery, which normall closes soon after birth but remains open
congestive heart failure
the heart is unable to pump its required amount of blood; pulmonary edema may result
gas waste released by body cells that goes from the heart to the lungs through veins where it is then expelled
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