Term
- increase heart rate.
- increase AV conduction
- increase irritability |
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Definition
| while stimulation of the parasympathetic branch causes the atria to slow down, stimulation of the sympathetic branch would cause what three effects on the atria and ventricles? |
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Term
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Definition
| if the vagus nerve is stimulated the heart rate will |
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Term
| Block the parasympathetic branch |
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Definition
| if a patient had a heart rate that was too slow, you might try to speed it up by giving a drug that would either stimulate the sympathetic branch or__________ |
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Term
| sympathetic and parasympathetic |
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Definition
| the two branches of the autonomic nervous system that influence heart rate are the _____and the ____ branch |
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Term
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Definition
| which one of the branches controls both atria and the ventricles? |
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Term
Electrical - conduction
Mechanical - contraction |
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Definition
| name the two types of cardiac cells and tell what type of activity each is responsible for |
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Term
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Definition
| what physical signs are used to reflect the mechanical function of the heart? |
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Term
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Definition
| how do you assess electrical activity in heart? |
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Term
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Definition
| arrythmias are manifestations of which type if cardiac activity? |
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Term
| it initiates the flow of electrical current |
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Definition
| what happens when the positive and negative electrical charges exchange places across the cell membrane of a cardiac cell? |
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Term
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Definition
| when electrical charges are balanced and in a stated of readiness for discharge. |
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Term
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Definition
| the discharge of electrical energy that accompanies the transfer of electrical charges across the cell membrane. |
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Term
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Definition
| the return of the charges to the original stated of readiness. |
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Term
| The SA node. it has the fasted inherent rate |
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Definition
| which site is normally the pacemaker of the heart and why? |
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Term
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Definition
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Term
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Definition
| Inherent rate of AV junction |
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Term
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Definition
| inherent rate of ventricles |
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Term
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Definition
| The process responsible for a site speeding up and overriding a highter site, thus taking over as pacemaker. |
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Term
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Definition
| the mechanism in play if a lower site takes over responsibility for the pace-making function following failure of a higher site. |
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Term
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Definition
| Devices that are applied to the skin to detect electrical activity and convey it to the machine for display |
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Term
Abrading the skin
Cleaning or drying the skin
using a contact medium |
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Definition
| Electrode contact can be improved by: |
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Term
| <0.12 seconds or less than 2-3 small boxes |
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Definition
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Term
| 0.12 - 0.20 seconds or 3-5 small boxes |
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Definition
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Term
| <0.12 seconds or < 3 small boxes |
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Definition
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Term
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Definition
| time from ventricular depolarization to ventricular repolarization |
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Term
| <0.45 seconds in the male and <0.46 seconds in female |
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| the atria normally contract before |
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Term
| single heart rate (pulse) |
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Definition
| a single cardiac cycle is expected to produce |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
| ventricular depolarization |
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Definition
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Term
| Tremors, Shivering and agitation. also, diaphorosis, loose electrodes, breaks in ecg wires, a dead battery or other electrical equipment in the room. |
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Definition
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Term
| Absolute refractory period |
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Definition
| the cardiac cell is not able to respond to another stimuli or depolarize no matter how strong the stimulus is |
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Term
| relative refractory period |
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Definition
| if the stimulus is strong enough the cardiac cell can generate new impulse. |
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Term
| QRS complex and begining of t wave |
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Definition
| the absolute refractory period encompasses |
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Term
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Definition
| relative refractory period is |
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