Cardiac Rhythms Flashcards

1
Q

WPW

A
  • Bypass pathway of NL SA–>AV pathway (Bundle of Kent)–> premature ventricular contraction
  • Predisposes to tachyarrhythmias
  • Wide QRS
  • Slurred delta wave
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2
Q

Hypokalemia

A

ST depression
Flatted T
U wave

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3
Q

Hyperkalmeia

A

Peaked T Waves

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4
Q

Hypocalcemia

A

Prolonged QT interval

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5
Q

Hypercalcemia

A

Short QT

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6
Q

Digitals Toxicity

A

Gradual downward curve of ST segment, lowest point below baseline

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7
Q

Pericarditis

A
  • ST elevation w/ T wave flattening or inversion

- Similar to STEMI, but will see in multiple leads

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8
Q

PSVT

A
  • Regular Rhythm, fast rate 150-200bpm. Narrow QRS
  • Rapid onset and subsequent resolution.
  • Palpitations, SOB, dizziness, syncope
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9
Q

Sinus Arrhythmia

A

Normal sinus with slight variation 2/2 inspiration/expiration

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10
Q

PVC

A
  • Wide, bizarre QRS (2/2 ventricular depolarization not following NL pathway)
  • Bigeminy= 1NL beat: 1 PVC
  • Trigeminy= 2NL beats: 1 PVC
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11
Q

VTach

A

Run of 3+ PVCs

Rate ~120-200

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12
Q

VFib

A

No CO

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13
Q

A Flutter

A

Saw tooth

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14
Q

A fib

A

No P wave.

Irregularly irregular

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15
Q

Premature atrial contraction

A

Ectopic, supraventricular beats

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16
Q

Right Bundle Branch Block

A

1) Wide QRS

2) RSR’ (rabbit ears) in V1

17
Q

Left Bundle Branch Block

A

1) Wide QRS

2) Long R

18
Q

1st Degree AV block

A

-All beats conducted, but PR interval >0.2s

19
Q

2nd degree AV block

Mobitz type 1 (Wenckebach)

A
  • Only some beats conducted to ventricle

- Progressive prolongation of PR interval until QRS dropped

20
Q

2nd degree AV block

Mobitz type 2

A

QRS dropped w/o prolongation

21
Q

3rd degree AV block

A

Complete dissociation between Atria and ventricles. Each driven by independent pacemakers.
-P waves march through QRSs

22
Q

Sick sinus Syndrome

A

Combo of sinus arrest w/ alterations of paroxysms of atrial tacky and brady arrhythmias
Tx: Pacemaker and AICD