Chapter 10 Flashcards Preview

Understanding EKG's > Chapter 10 > Flashcards

Flashcards in Chapter 10 Deck (22)
Loading flashcards...
0
Q

When PVC falls between two sinus beats without interfering with the rhythm

A

Interpolated beat

1
Q

Single ectopic complex that occurs earlier than the next expected complex and arise from an irritable site in the ventricles

A

Premature ventricle complex

2
Q

Shape of the PVC

A

Morphology

3
Q

PVCs that are alike in appreance

A

Unifocal

4
Q

PVCs with different shapes the pat originate from different sites within the ventricles

A

Multifocal

5
Q

Another name given to a run or grouping of three or more PVCs in a row

A

Salvos

6
Q

Decreased supply of oxygenated blood to the heart

A

Myocardial ischemia

7
Q

(Also called ventricular escape rhythms) results when the discharge rate of higher pacemakers becomes less than that of the ventricles or when impulses from higher pacemakers fail to reach the ventricles

A

Idioventricular rhythms

8
Q

When the rate of an IVR rhythm falls below 20 BPM

A

Agonal

9
Q

Occurs when the rate of the ectopic pacemaker in an IVR exceeds 40 BPM

A

Accelerated idioventricular rhythm

10
Q

Rhythm in which three or more PVCs arise in sequence at a rate of greater than 100 BPM; commonly overrides the normal pacemaker of the heart

A

Ventricular tachycardia

11
Q

A rhythm that lasts for more than 30 seconds

A

Sustained rhythm

12
Q

A run of V tach that lasts for more than 30 seconds

A

Nonsustained rhythm

13
Q

Refers to a patient who presents with hypotension (low blood pressure) chest pain, shortness of breath, and changes in mental status

A

Hemodynamically unstable

14
Q

Refers to a patient who presents a normal blood pressure, absence of chest pain, and no notable change in mental status

A

Hemodynamically stable

15
Q

Similar to ventricular tachycardia; morphology of QRS complexes show variations in width and shape; life threatening dysrhythmia

A

Torsades de pointes

16
Q

Is a fatal dysrhythmia that occurs as a result of multiple weak ectopic foci in the ventricles; there is no coordinated atrial or ventricle contraction and no palpable pulse

A

Ventricular fibrillation

17
Q

The absence of all ventricular activity; also called cardiac standstill

A

Ventricular asystole

18
Q

Sensation that the heart is skipping beats and beating rapidly

A

Palpations

19
Q

Absence of palpable pulse and myocardial muscle activity with the presence of organized electrical activity (excluding V tach or V fib) on the cardiac monitor

A

Pulseless electrical activity (PEA)

20
Q

Refers to the process of the passage of an electrical current through the heart during a specific part of the cardiac cycle for the purpose of terminating certain kind of dysrhythmias

A

Cardioversion

21
Q

The process of passing an electrical current through a fibrillating heart to depolarize the cells and allow them to repolarize uniformly, thus restoring an organized normal rhythm after the onset of fibrillation

A

Defibrillation