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SPDX > ELECTROCARDIOGRAM > Flashcards

ELECTROCARDIOGRAM Flashcards

1
Q

Is a graphic recording of the electrical activity of the heart

A

electrocardiogram or ECG

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2
Q

electrocardiogram Converts the heart’s electrical activity into lines called “___

A

waveforms

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3
Q

importance of electrocardiogram

A

§ verify these alterations in heart rhythm
§ provides information about the specific type of heart disease
§ provides information about which region in the heart is affected.

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4
Q

reasons why ecg is done

A

§ If the patient had heart disease in the past.
§ If the patient has a medical condition that predisposes to heart disease, such as hypertension, diabetes, high cholesterol, or inflammatory disease.
§ If the patient has other significant risk factors for cardiac disease.
§ An ECG is also required prior to any type of heart surgery.

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5
Q

indications

A

§ heart arrhythmias
§ conduction abnormalities
§ Myocardial infarction
§ CAD
§ hypertrophic cardiomyopathy
§ signs of congenital electrical abnormalities
§ electrolyte imbalances
§ congenital heart defects
§ infections involving the heart

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6
Q

risk and contraindications

A

no risk

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7
Q

preparation

A

no prep needed

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8
Q

Pre-Test- Once in position, a total of how many electrodes are attached with a sticky, but
easy-to-remove adhesive.

A

ten electrodes

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9
Q

where does electrode are attached

A

one each arm and leg, six in chest

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10
Q

responsibilities of ecg technicians

A
  1. The technicians should remind the patients to lie flat and relaxed as possible
  2. Remind the patient not to wear jewelries/metal during ECG.
  3. Check the machine for proper standardization.
  4. Check if the machine is properly grounded.
  5. The technicians should ensure correct placement of leads while taking ECG.
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11
Q

ecg equipment

are applied at specific locations on the patients chest wall and extremities to virw the heart’s electrical activity from differnt angles and planes

A

electrodes

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12
Q

two type of lead wires or cable connections

A

clip or snap

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13
Q

is a graph paper used to measure rates of impulse formation and the duration of teh elctrical events that occur in the heart

A

ecg paper

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14
Q

made up of vertical and horizontal lines which form large and small boxes

A

ecg paper

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15
Q

the ecg is made up of how many charactristics views of the heart

A

12 characteristics views

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16
Q

12 charac views is divided into

A

6 in limbs
6 in chest

17
Q

3 Bipolar limb leads

A

(Standard limb leads)- I, II, III

18
Q

3 Unipolar Augmented leads

A

(aVR, aVL, aVF)

19
Q

3 Unipolar Augmented leads is obtained through 4 electrodes placed on the

A

RA,RL,LA,LL

20
Q

what are the 6 chest leads

A

v1 - v6

21
Q

Electrode positioned in the 4 th intercostal space in the right sternal border

A

v1

22
Q

4 th ICS in the left sternal border

A

v2

23
Q

Midway between V2 and V4

A

v3

24
Q

5 th ICS in the left midclavicular line

A

v4

25
Q

Same level as V4, anterior axillary line

A

v5

26
Q

Same level as V4 and V5 ,midaxillary line

A

v6

27
Q

pepresents atrial contraction

A

p wave

28
Q

represents ventricular depolarization

A

qrs complex

29
Q

qrs complex is composed of 3 waves

A

Q wave is the first negative deflection.
R wave is the first positive deflection after the P wave.
S wave is the negative deflection following R wave.

30
Q

Measured from the beginning of P wave to the beginning of QRS complex.

A

pr interval

31
Q

The normal PR interval is ___, represented by 3-5 small squares

A

0.12 - 0.2 sec

32
Q

an isoelectric line representing early ventricular repolarization

A

st segment

33
Q

represents ventricular repolarization

A

t wave

34
Q

results from slow repolarization of ventricular Purkinje fibers

A

u wave

35
Q

represents total time required for ventricular depolarization & repolarizatio

A

qt interval

36
Q

from the beginning of QRS complex to the end of T wave

A

qt interval

37
Q

normal QT interval is___

A

0.36 to 0.45 sec

38
Q
A

SPDX (5 decks)

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