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17 Cards in this Set
- Front
- Back
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Na+ concentrations
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intracellular: 10mM
extracellular: 145mM |
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K+ concentrations
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intracellular: 120mM
extracellular: 4.5 mM |
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Cl- concentrations
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intracellular: 35mM
extracellular: 116mM |
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H+ concentrations [ph]
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intracellular: 7.1
extracellular: 7.4 |
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Ca2+ concentrations
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intracellular: 10^-4mM
extracellular: 1mM |
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effect of digitalis (digoxin)
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inhibit Na/K ATPase
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Wolff-Parkinson-White syndrome
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(a) accessory pathway from atria to ventricles that is independent of AV node
(bundle of Kent) (b) short PR interval (the ventricles are pre-excited) (c) wide QRS interval with slurring (delta wave) in initial upstroke – see arrow in Fig. 20. (d) re-entrant pathway can occur via conduction down through the AV node, and then up through the accessory pathway (most common), or visa versa. |
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Bundle of Kent
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The Bundle of Kent is an extra or accessory conduction pathway between the atria and ventricles in the heart. It is an abnormal pathway that is present in a small percentage of the general population, and results in a condition known as Wolff-Parkinson-White syndrome (WPW)
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heart sound frequently associated with congestive heart failure
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S3 - tensing of chordae tendinae with sudden ventricular filling.
commonly innocent in children. |
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mitral regurgitation classified as
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holosystolic murmur
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how to decrease threshold for action potential in myocardium
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increase Ica
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which nervous system innervates the ventricles less than the other
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parasympathetic
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normal for 70kg man
HR |
55-80bpm
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normal for 70kg man
SV |
70-80mL
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normal for 70kg man
CO |
4-5.5L/min
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normal for 70kg man
MAP |
85-95mmHg
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effect of aortic regurgitation on stroke volume
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increase (think compensation)
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