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CARDIOGENIC SHOCK (Treatment of Cardiogenic shock (Reduce myocardial…
CARDIOGENIC SHOCK
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STAGES OF SHOCK
1) Compensatory stage
The body is able to compensate for changes in tissue perfusion, if the cause of shock is corrected, the patient should recover with little or no further ramifications.
The body activates natural, hormonal, and biochemical compensatory mechanisms to overcome consequences of anaerobic metabolism to maintain homeostasis.
Baroreceptors in the carotid and aortic vessels activate the SNS resulting in vasoconstriction via the release of vasoconstrictors such as adrenaline and noradrenaline.
Blood flow is then directed to the most essential organs such as the brain and the heart while blood flow to non-essential organs such as GI tract and skin is shunted and diverted.
Decreased blood flow to GI tract results in impaired mobility and slowing of peristalisis - increasing risk of paraltyic ileus
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2) Progressive stage
Begins when the compensatory mechanisms fail. Aggressive interventions are required here. The patients mental status will be affected and can result in **myocaridal dysfunction, arrthymias, ischaemia, and MI.
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3) Irreversible shock
The final stage of shock where there the compensatory mechanisms are starting to fail and homeostasis cannot be maintained.
Organs will beginning to fail quickly, particular the lungs, liver and kidneys resulting in accumulation of waste products such as lactate, urea, ammonia, and CO2 meaning recovery is unlikely.
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Cardiogenic shock is defined as decreased cardiac output and evidence of tissue hypoxia in the presence of adequate intravascular volume.