Ventricular Rythms Flashcards Preview

Medical Block > Ventricular Rythms > Flashcards

Flashcards in Ventricular Rythms Deck (29):
1

QRS

>.12 if initiated in the ventricles
a beat >.12 isn't necessarily initiated in the ventricles

2

PVC

Wide and bizarre >.12 QRS

3

Interpolated PVC

doesn't affect rythm. falls in the middle of 2 beats

4

Compensatory pause

PVC interrupts normal rhythm

5

sinus brady with bigeminal PVC's

electrical twice the mechanical

6

Run of PVC's (or burst)

3 or more PVC's in a row

7

Couplet of PVC's in a row

2 PVC's in a row

8

electrical doesn't match mechanical pulse

Pulsus deficit

9

Frequent PVC's are = to

6 or more per minute

10

Ventricular escape beats

A. Ectopic occurs after pause in which supraventricular pacemaker fails to initiate impulse
B. Protective mechanism

11

VTAK

Heart extremely irritable
Ventricular focus could speed up and over ride pacer sites
Polymorphic vs. monomorphic

12

Sustained VTAK

>30 seconds

13

Nonsustained VTAK

<30 seconds

14

6 characteristics of VTAK

1. Rate is 150-250
2. Rhythm is regular
3. P wave none usually, if there doesn't conduct
4. PRI---none
5. QRS
a. wide bizarre
b. > .12 sec
6. T wave-----not seen

15

>40 IVR

accelerated idioventricular rhythm

16

5 H's

Hypovolemia
Hypoxia
Hydrogen-ion(acidosis)
Hypo/hyperkalemia
Hypothermia

17

5 T'S

Tablets (OD)
Tamponade
Tension Pheumo
Thrombosis (coronary)
Thrombosis (emboli)

18

LIDO

protocol

19

NACO3

protocol

20

Amiodarone

protocol

21

S127

protocol

22

etiology of PVC

1. Damage to His-Purkinje system
2. Increased sympathetic tone
3. Hypoxia or Acidosis
4. AMI or myocardial ischemia or CHF
5. Electrolyte imbalances (K, Ca++, Mg)
6. Digitalis toxicity
7. Use of cyclic antidepressants, phenothiazines
8. Stimulate uses

23

Etiology of VTAK

Same causes as PVC's
Ischemia
Hypoxia
Electrolytes
Acid-base problems
Increased sympathetic tone

24

Polymorphic VTAK

Torsades de Pointes

25

Torsades Itiology

Drug induced
Eating disorder
Electrolyte imbalances (magnesium, potassium, calcium)

26

V flutter

often degenerates to vfib

27

V Flutter symptoms

Palpitations Dyspnea
Dizziness Anxiety
Diaphoresis Angina
Seizures

28

V Fib Etiology

1. Usually preceded by ventricular irritability
2. Ventricular damage
3. Hypoxia
4. Electrolyte disturbances
5. Electric shock
6. Malfunctioning pacemaker
7. Drugs

29

Often first rhythm following defibrillation

Idioventricular