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Med Lab Specialties > Chapter 49 > Flashcards

Chapter 49 Flashcards

1
Q

What is a Holter Monitor?

A

ECG device that has a small recorder and is worn by the pt over a small period of time to record the electrical activities of the heart

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2
Q

what is a lead?

A

view of the electrical activity of the heart

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3
Q

what is polarity?

A

condition of having 2 poles, 1 positive and one negative

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4
Q

what does a pulmonary function test do?

A

measures and evaluates lung capacity and volume

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5
Q

what is repolarization?

A

period of electrical recovery

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6
Q

what is spirometry?

A

test used to measure breathing capacity

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7
Q

what is a stylus?

A

penlike instrument on an ECG machine

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8
Q

what is the cardiac cycle?

A

sequence of contraction/relaxation of the heart

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9
Q

what is deflection?

A

peaks and valleys observed in an ECG tracing

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10
Q

what is an electrocardiograph?

A

instrument that measures and displays the electrical impulses of the heart

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11
Q

what is an electrode?

A

electrical pulse sensor

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12
Q

what is forced vital capacity?

A

greatest volume of air that can be expelled during rapid, forced expiration

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13
Q

which wave is a downward deflection that represents an impulse going through both ventricles?

A

the S wave

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14
Q

what are the most used electrodes?

A

disposable

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15
Q

which wave is a large upward spike that represents a pulse going through the LV?

A

the R wave

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16
Q

how many leads are there that directly monitor electrodes the arms and legs?

A

6

17
Q

which wave is a downward deflection that represents an impulse traveling down the septum toward the purkinje fibers?

A

the Q wave

18
Q

what control adjusts the height of the standardization mark and the tracing?

A

sensitivity control

19
Q

what is premature ventricular contractions?

A

beat that occurs early in the cycle followed by a pause before the next cycle

20
Q

what is ventricular fibrillation?

A

saw tooth image

21
Q

what is atrial fibrillation?

A

small, irregular, uncoordinated complex that are difficult to interpret

Med Lab Specialties (8 decks)

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