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EKG > EKG Basics and Morphology > Flashcards

EKG Basics and Morphology Flashcards

1
Q

PR interval time

A

120-200ms

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2
Q

PR segment time

A

50-120ms

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3
Q

QRS complex time

A

80-120ms

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4
Q

ST segment time

A

80-120ms

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5
Q

T wave time

A

160ms

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6
Q

P wave time

A

80ms

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7
Q

Pathological q wave morphology

A

> 30ms width and 1/4 the height of R wave. Present in V1,2,3.

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8
Q

Leads II, III, and aVF represent what anatomical location of the heart?

A

Inferior leads

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9
Q

Leads V1 and V2 represent what anatomical location of the heart?

A

The septal leads

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10
Q

Leads V3 and V4 represent what anatomical location of the heart?

A

Anterior leads

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11
Q

Leads I, aVL, V5 and V6 represent what anatomical location of the heart?

A

The lateral and high lateral leads.

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12
Q

Left Main Coronary Artery bisects into what?

A

Cx and LAD

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13
Q

Right Coronary Artery turns into what?

A

Posterior Descending Artery

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14
Q

Cx Artery supplies what anatomical structures of the heart?

A

Lateral and high lateral

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15
Q

LAD artery supplies what anatomical structures of the heart?

A

Septum, anterior, and apex.

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16
Q

Right Coronary Artery supplies what anatomical structures of the heart?

A

RV, and posterior and inferior (PDA).

17
Q

Normal septal depolarization is in what direction?

A

Left to right.

18
Q

What is right dominant circulation of the coronary arteries?

A

PDA is supplied by the RCA (80%).

19
Q

What is left dominant circulation of the coronary arteries?

A

PDA is supplied by the Cx (15%)

20
Q

What is co-dominant circulation of the coronary arteries?

A

PDA is supplied by both the RCA and Cx (rare).

21
Q

Narrow QRS origin

A

Supraventricular origin

22
Q

Broad QRS origin

A

Ventricular in origin or due to aberrancy of supraventricular origin (hyperK, BBB, Na channel block etc.)

EKG (7 decks)

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