Term
| Pacemakers use a generator to stimulate myocardium and produce chamber contraction. What are some more general conditions they're used for? |
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Definition
- When natural pacemaker activity stops
- When natural pacemaker activity is insufficient (bradycardia)
- Overdrive (capturing and converting fast arrythmias)
- Prophylactically if arrhythmia progression is anticipated or depressant drugs are used or if ablation of the AV node is planned.
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Term
There are 5 specific conditions where a pacemaker is indicated. I made a pneumonic for it:
"Sam Licks A Hard Dick" |
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Definition
- Sinus node disease
- Long Q-T syndrome
- AV node disease
- Hypertrophic obstructive cardiomyopathy
- Dilated cardiomyopathy
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Term
| What is the terminology for the most popular form of pacing used today? |
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Definition
| Demand pacing - fires only when needed and avoids competition. |
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Term
| What does a temporary pacemaker consist of? |
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Definition
| A transvenous catheter attached to an external pulse generator. |
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Term
| This type of pacemaker varies its pacing rate in response to certain physiological parameters that it also measures. |
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Definition
| Rate-Responsive Pacemaker |
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Term
| A permanent pacemaker is a surgically implanted pulse generator. |
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Definition
| So what....next card, douche. |
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Term
| What situation would called for a "fixed rate" to be used? |
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Definition
| When pt. has NO VENTRICULAR CONTRACTIONS. A fixed rate does not sense the patient's natural beat but fires at a set constant rate. |
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Term
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Definition
| The rate that is set (difficult term, I know) |
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Term
| If I decrease the pacer's output will I conserve battery life? |
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Definition
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Term
| If I crank up my patient's pacemaker output too much what might happen? |
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Definition
| I might stimulate his/her diaphragm, pectoral muscle or bonus medullaris. |
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Term
| Almost all pacemakers will revert to an _________when a magnet is placed over it. |
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Definition
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Term
| Term that refers to how a pacemaker is programmed. |
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Definition
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Term
| T or F: If my pacer has a high sensitivity it will have a low mV number (1.6-2.5 mV) |
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Definition
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Term
| My patient has really low amplitude p and R waves. Knowing this, I may have to ____a___ the sensitivity of the sensor in the pacer. After doing this, the mV number will be ____b____. |
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Definition
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Term
| The amount of current needed for electrical activation is referred to as what? |
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Definition
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Term
| What is the refractory period of a pacer? |
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Definition
| It's the time after a paced or sensed event during which the pacemaker is insensitive to incoming signals. |
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