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60 year old obese woman with DM II experienced a myocardial infarction…
60 year old obese woman with DM II experienced a myocardial infarction
background
anatomy of heart
4 chambers
right ventricle
left atrium
right atrium
left ventricle
pathway of blood
in through the inferior or superior vena cava
enters the right atrium
goes through the tricuspid valve
enters right ventricle
through the pulmonary semilunar valve, out the pulmonary trunk artery
out to lungs, enters through pulmonary veins and enters the left atrium
bicuspid valve, left ventricle and passes the aortic semilunar valve
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role of valves and papillary muscles
valves
prevent back flow of then blood
papillary muscles
allows the heart to contract
normal sounds of the heart
lubb
first sound, S1,
caused by turbulence caused by the closing of the mitral and tricuspid valve at the start of the systole
dubb
second sound, S2
caused by the closure of the aortic and pulmonic valves
downstreams
effects of a damaged mitral valve
pulmonary hypertension
mitral valve disease
heart failure
back flow of blood into the left atrium
atrial fibrillation