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60 year old woman with a history of obesity & DM II & has…
60 year old woman with a history of obesity & DM II & has experienced a myocardial infraction & caused damaged to papillary muscles of left ventricle causing the mitral valve to not be able to close; BP 95/55 & breath rate is 40b/m; heart rate is 125/min
background information:
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concepts of:
heart rate
the number of heartbeats usually per minute; it is based on the number of contractions of the ventricles
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mean arterial pressure
is a calculations of blood flow, resistance, & pressure to supply blood to all major organs.
preload
volume of blood in the ventricles at the end of diastole & the heart wall stretch before contraction
afterload
resistance in the arteries to the ejection of blood by the ventricles & it shows the pressure needed to meet before the blood exits the chamber
peripheral resistance
is the resistance of the arteries to blood flow; as the arteries constrict the resistance increases & as they dilate the resistance decreases
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