Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
18 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
junctional rhythms
|
Rhythms that are initiated in the area of the AV junction.
|
104
|
|
|
juctional use to be known as
|
nodal
|
104
|
|
|
premature junctional contractions (PJCs)
|
Initiate from a single site in the AV junction and arise earlier than the next anticipated complex of the underlying rhythm.
|
105
|
|
|
PJC may have what type of pause?
|
noncompensatory or compensatory
|
105
|
|
|
noncompensatory pause
|
The pause that occurs after an ectopic beat, when the SA node is depolarized.
|
105
|
|
|
compensatory pause
|
A pause that occurs after an ectopic beat in which the SA node is unaffected and the cadence of the heart is uninterrupted.
|
105
|
|
|
Notes on PJCs
|
More uncommon than PACs, and especially PVCs. May occur in any rhythm. Easier to identify when the underlyning rhythm is Sinus brady. Count as part of rate, but check pulse to see if they are actually conducting.
|
105
|
|
|
Causes of PJCs
|
fever, anxiety, exercise, drug effects, stimulants, hypoxia, or myocadial ischemia, or may have no definitive cause.
|
105
|
|
|
Always study strip from:
|
left to right
|
105
|
|
|
junctional escape rhythm
|
When the SA node fails to generate an impulse or if the rate of impulse generation falls below that of the AV node will assume the role of the pacemaker, the resulting rhythm is called a juctional escape rhythm.
|
106
|
|
|
accelerated junctional rhythm
|
Increased automaticity in the AV junction, causing the junction to discharge impulse at a rate faster than its intrinsic rate. The rate is 60 to 100 bpm.
|
106
|
|
|
junctional tachycardia
|
When the junctional rate exceeds 100 bpm.
|
107
|
|
|
paroxysmal rhythm
|
A rhythm that you observed start or end abruptly
|
108
|
|
|
Tx for symptomatic junctional escape rhythm
|
They will probably only be symptomatic with the lower rates. Consider atropine or TCP.
|
110
|
|
|
Tx for symptomatic junctional tachycardia
|
Vagal maneuvers, drug therapy, and electrical therapy.
|
110
|
|
|
Idioventricular rhythms (IVRs)
|
Also called ventricular escape rhythms, result when the discharge rateof hiher pacemakers become less than that of the ventricles or when impulses from higher pacemakers fail to reach the ventricles.
|
122
|
|
|
agonal
|
When the rate of an IVR falls below 20 bpm.
|
122
|
|
|
accelerated idioventricular rhythm (AIVR)
|
Occurs when the rate of ectopic pacemaker is an idioventricular rhythm exceeds 40 bpm.
|
122
|
