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CPR Exam 1 > Physiology Of ECG Basics > Flashcards

Physiology Of ECG Basics Flashcards

1
Q

Letters at the top of the 3 peaks of an ECG

Letters in the bottom dips

A

P R T

Q S

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2
Q

Top of P wave

A

Halt of Atrium as depolarized and contracted

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3
Q

End of P wave

A

Entire Atrium has contracted

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4
Q

R wave

A

Ventricle depolarization

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5
Q

T wave

A

Ventricle repolarization

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6
Q

When does atrium repolarization happen

A

Masked by QRS wave only it is right before it

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7
Q

ST segment

A

Ventricles have fully depolarized and all myocytes are contracting

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8
Q

QT interval

A

Full depolarization and repolarization of ventricles

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9
Q

RR interval

A

Period between V depolarization = Measure HR

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10
Q

PR interval

A

Complete atrial depolarization and repolarization is done

Start of P point —> R wave point

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11
Q

PR segment

A

End of P wave —> Q wave

All of atrium has contracted and depolarized fully

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12
Q

from Q to R

A

Medial part of V depolarizing and atrium repolarization

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13
Q

S wave

A

The lateral part of V depolarizing and contraction

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14
Q

ST

A

When all V in contracting = iOS electric point

*should not vary much from the line before the P wave

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15
Q

The line right before the P wave ? Important for what in clinical setting

A

Should be the same level as the ST segment

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16
Q

T—> P segment

A

Entire ventricle is repolarized

17
Q

Big dark lines of ECG

Small think lines on ECG

A

0.2sec
0.04sec
There are 5 small ones between 2 big ones

18
Q

Alternative method what are the next 7 lines from one R wave for HR

A 
300
150
100
75
60
50
43
19
Q

Leads ll, lll, aVF shows

A

Inferior heart problem

20
Q

Lead l, aVL, V5, V6 shows

A

Lateral Heart Problem

21
Q

Lead V1 and V2 shows

A

Anterior Heart Problem

22
Q

Lead V3 and V4 shows

A

Septal heart problem

23
Q

Does the ECG show a SINUS, what do I look for

A

The P-wave especially with Lead V1 and ll

The ECG is not normal if no P wave or many P waves

CPR Exam 1 (20 decks)

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