Human Performance 20

Human Performance 20 - Premature Ventricular Contraction...

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Human Performance 20 15:47 Electrocardiography (EKG) :Measures electrical changes occurring in a cardiac muscle preceding  contraction – a measure of cardiac pathology. Non-invasive – does not penetrate  the skin. It’s a measure from 0 to Minus.   Depolarization : electrical changes in cell membrane – preceding contraction.  Repolarizatiion:  electrical changes back to rest. EKG Graph:  X:Time, Y:Volt: The Sino Atrial node (SA) pace maker. P-wave =  atrial depolarization. Atrio Ventricular Node: Q—R—S represents ventricular  depolarization. T=Vent Repo = .65.  Arhythmia:  stress, chemial interaction, nothing really serious. 
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Unformatted text preview: Premature Ventricular Contraction PVC: the impulse originated in the ventricular tissue. One is not that bad but a lot then it is a red flag. Ischemia: lack of blood Fibrillation: asynchronous firing: defibrillators make the heart come back to normal rhythm. Cardiomyopathy: sensitive to hormones: like epinephrine. Betablockers block the effect of epinephrine: it allows the person to live. ST segment depression: cardiac ischemia Positive Test: could be anything Angiogram: False + Test: False – Test: Diagnostic Potential: Resting EKG: Angioram: Exer EKG: 15:47 15:47...
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This note was uploaded on 10/28/2010 for the course EXSC 205Lxg taught by Professor Girandola during the Spring '07 term at USC.

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Human Performance 20 - Premature Ventricular Contraction...

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