Cardiac Dysrythmias Flashcards

1
Q

P of PQRST complex

A

Atrial Depolarization

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2
Q

QRS of PQRST complex

A

Ventricular Depolarization

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3
Q

T of PQRST complex

A

Ventricular Repolarization

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4
Q

Normal HR range?

A

60 - 100 BPM

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5
Q

S/S Sinus Bradycardia

A
  • Decreased C/O
  • Pale, cool skin
  • hypotension
  • weakness
  • angina dizziness
  • syncope
  • confusion
  • SOB
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6
Q

Treatment of Sinus Bradycardia

A
  • Atropine
  • Pacemaker
  • Adjust or hold medications
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7
Q

Sinus Bradycardia Can occur with?

A
  • Carotid massage
  • Valsalva maneuver
  • Administration of medications (B-blockers, ACE)
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8
Q
A patient’s cardiac rhythm is sinus bradycardia with a heart rate of 34 beats/minute. If the bradycardia is symptomatic, the nurse would expect the patient to exhibit?
  A) Palpitations. 
  B) Hypertension.
  C) Warm, flushed skin.
  D) Shortness of breath
A

Ans: D

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9
Q

Sinus Tachycardia can occur with:

A
  • Exercise
  • fever
  • pain
  • hypotension
  • hypovolemia
  • anemia
  • hypoxia
  • MI
  • HF
  • administration of meds (Atropine, Epinephrine, Sudafed, Theophylline)
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10
Q

S/S of Sinus Tachycardia

A
  • Decreased C/O
  • dizziness
  • dyspnea
  • hypotension
  • Can present as CP, or cause an MI
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11
Q

Treatment of Sinus Tachycardia

A
  • Treat cause
  • vagal maneuvers
  • beta blockers
  • calcium channel blockers
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12
Q
  • Saw toothed flutter waves
  • Atrial rate 200-350 bpm
  • Ventricular rate approx. 150 bpm but can vary with conduction ratio
A

Atrial Flutter

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13
Q

Atrial Flutter Atrial rate

A

200-350 bpm

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14
Q

Atrial Flutter Ventricular rate

A

approx. 150 bpm but can vary with conduction ratio

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15
Q

Tx of choice for Sinus Tachycardia?

A

B-Blockers

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16
Q

Treatment of Atrial Flutter?

A
  • B Blockers
  • antidysrhythmics,
  • Catheter ablation (treatment of choice)
  • Cardioversion if hemodynamically stable
  • Long term use of Coumadin if Aflutter continues
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17
Q

Tx of choice for Atrial Flutter?

A

Catheter ablation

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18
Q

Catheter ablation

A

Catheter is inserted into the right atrium between the inferior vena cava and tricuspid valve, electrical energy is used destroy the part of the heart causing the dysrythmia?

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19
Q

Cardioversion

A

external shock is applied (similar to CPR) to jolt pt back into a NSR

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20
Q

Atrial flutter tx is catheter ablation and cardionversion fail?

A

long term coumadin

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21
Q

Atrial Fibrillation Atrial rate

A

350-600 bpm

22
Q

Controlled Atrial Fibrillation ventricular rate

A

60-100 bpm

23
Q

Uncontrolled Atrial Fibrillation ventricular rate

A

> 100 bpm

24
Q

Most common dysrhythmia?

A

Atrial Fibrillation

25
Q

Treatment of Atrial Fibrillation?

A
  • CC blockers
  • B-Blockers
  • Cardioversion (1st choice)
  • Catheter ablation or Maze procedure (2nd choice)
  • Long-term use of coumadin if Afib continues
26
Q

Tx of choice for A-Fib?

A

Cardioversion

27
Q

S/S of A-Fib

A

Decreased cardiac output

28
Q

every other beat is a PVC?

A

Ventricular bigeminy

29
Q

every third beat is a PVC?

A

Ventricular trigeminy

30
Q

2 consecutive PVC’s in a row?

A

Couplet

31
Q

S/S of PVC

A
  • Can be benign
  • Reduced cardiac output
  • CP
  • HF
  • pulse deficit
32
Q

Complication of PVC

A

Ventricular Tachycardia

33
Q

Tx of PVC

A
  • Treat cause

- β Blockers

34
Q

A run of 3 or more PVC?

A

Ventricular Tachycardia

35
Q

Ventricular Tachycardia Ventricular rate

A

150-250 bpm- regular or irregular

36
Q

S/S of V-Tach

A
  • Severe decreased C/O
  • Hypotension
  • pulmonary edema
  • decreased cerebral blood flow
  • cardio-pulmonary arrest
37
Q

Complications of V-Tach

A
  • Ventricular fibrillation

- Death

38
Q

Treatment of V-Tach

A
  • Treat cause
  • B Blockers
  • antidysrhythmics
  • defibrillation
39
Q
  • The ventricle is quivering, no contraction, no cardiac output
  • Heart rate is not measurable
  • no pulse
A

Ventricular Fibrillation

40
Q

S/S of V-Fib

A
  • Unresponsive
  • pulseless
  • apneic
41
Q

Complications of V-Fib

A

Death

42
Q

Treatment of V-Fib

A
  • Immediate CPR and ACLS, defibrillation
43
Q

A patient in the coronary care unit develops ventricular fibrillation. The first action the nurse should take is to
A) Perform defibrillation.
B) Initiate CPR
C) Prepare for synchronized cardio-version.
D) Administer IV antidysrhythmic drugs per protocol.

A

Ans: B

44
Q

Represents total absence of ventricular electrical activity

A

Asystole

45
Q

Treatment of Asystole?

A
  • CPR, ACLS, & Intubation
46
Q

Organized electrical activity seen on ECG, but NO pulse present?

A

Pulseless Electrical Activity (PEA)

47
Q

Causes of PEA?

A
  • Common after defibrillation
  • Hypoxia
  • hypovolemia
  • drug overdose
  • hyper/hypokalemia
  • metabolic acidosis
48
Q

Treatment of PEA?

A
  • CPR
  • epinephrine
  • intubate
  • Treat underlying cause
49
Q

Majority of SCDs result from

A
  • ventricular dysrhythmias
    • V-tach
    • V-fib
50
Q

most common cause of SCD?

A

V-Fib