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Heart Failure Essay

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Heart failure

CO and BP are inadequate for the body.   82% of patients die within 6 years.

Increased load causes ventricular stretching that leads to cardiomegaly.   The increase in load causes the heart to pump harder (Starling's curve) initially but contraction falls as stretch becomes extreme.     CO is reduced, sympathetic system activates causing increased heart rate, contractility and blood vessel tone.   Renal flow is reduced leading to activation of the renin-angiotensin system that results in vasoconstriction and fluid retention.   Initially CO is increased but at the expense of peripheral circulation.

Aetiology

|Left heart failure                                                     |Right heart failure                                                     |
|Inadequate filling                                                     |Any cause of LHF                                                       |
|Mitral stenosis                                                         |Pulmonary hypertension (ie PE, lung disease)                           |
|LVH                                                                     |Atrial septal defect                                                   |
|Percardial constriction                                                 |                                                                       |
|                                                                       |                                                                       |
|Pressure overload                                                       |                                                                       |
|Aortic stenosis                                                         |                                                                       |
|Hypertension                                                           |                                                                       |
|...

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"Heart Failure". Anti Essays. 16 Dec. 2018

<http://parimatch-stavka7.com/free-essays/Heart-Failure-319988.html>

APA Citation

Heart Failure. Anti Essays. Retrieved December 16, 2018, from the World Wide Web: http://parimatch-stavka7.com/free-essays/Heart-Failure-319988.html


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