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NPTE Prep > EKG Interpretation > Flashcards

EKG Interpretation Flashcards

1
Q

P wave represents

A

Atrial Depolarization

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2
Q

PR interval is

A

SA-AV node time

.12-.2 seconds

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3
Q

QRS complex is

A

Ventricular depol/Atrial repol

.06-.10 seconds

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4
Q

QT interval is

A

Time for both depol + repol of Ventricles

.2-.4

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5
Q

St segment is

A

Period after depol where ventricles are still depolarized

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6
Q

Saw tooth P waves at 250-250 beats per minute with normal QRS

A

Atrial Flutter (regular pattern)

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7
Q

Intermittent disturbances in impulses between A and V? Types?

A

2nd degree block

Mobitz I(Weckenbach): longer longer longer drop

Mobitz II:intervals are normal until one drops:

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8
Q

P wave absent with Wide QRS.

A

PVC

Bigeminy: normal sinus->PVC
Trigemeny:2 NSR->PVC

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9
Q

3 or more PVCS in a row w/ V rate >150

A

Vtach

Lifethreatening when longer than 30 seconds

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10
Q

Ventricles dont beat in coordinate fashion

A

V-fib

0 cardiac output can lead to unconsciousness.

Need to defibrillate.

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11
Q

No rhythm/standstill

A

Asystole

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12
Q

Irregular indulations of p waves

A

Atrial flutter

Stagnation of blood can lead to thrombus in atria

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13
Q

Atria and V paced independently

A

3rd degree AV block. A>V

Medical emergency requiring pacemaker

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14
Q

3 or more PVCS in a row w/ V rate >150

A

Vtach

Lifethreatening when longer than 30 seconds

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15
Q

What is the isoelectric baseline of ST segment?

A

.08 seconds after “J point”

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16
Q

What is a Q wave?

A

Marker of infarction.

Loss of + voltage due to necrosis

17
Q

ST segment depression

A

Evident of ischemia

18
Q

ST elevation:

A

Acute MI.

19
Q

T wave inversion

A

Days after MI 2/2 delayed repol

With bundle branch blocks or after CVA

20
Q

PR interval longer than .2 but constant

A

1st degree AV block.

NPTE Prep (3 decks)

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