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8 Cards in this Set
- Front
- Back
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capture
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depolarization of atria/ventricles by pacemaker
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output
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measured in milliamperes (mA), the amount of current delivered tot he chamber being paced
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sensing
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the least sensitive setting at which the intrinsic heartbeat can be detected, in other words, the ability to detect the patient's own cardiac activity
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indications for temporary pacing
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complete heart block
sick sinus syndrome (brady/tachy) sinus brady with symptoms support post cardiac surgery |
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on post open hearts,how do you tell which epicardial wires are atrial and which are ventricular
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atrial right, ventricular left (patient's right and left)
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Why does the "pacing threshold" or mA amount needed to pace a patient, fluctuate?
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As endothelial sheath forms over tips of electrodes, need more mA to capture
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What should mA output be set at?
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1.5 to 3 x higher than pacing threshold (capture first occurs)
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General mA adult guidelines:
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nonurgent: 10 mA
emergent: 15-20 mA |
