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Physio Exam 3 (chapters 12-16) > Cardiovascular Physio (electrical Conduction) > Flashcards

Cardiovascular Physio (electrical Conduction) Flashcards

1
Q

Cardiovascular electrical conduction pathway

A
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2
Q

What does ECG Stand for?

What does is measure?

A
  • electrocardiograms

- recorded heart electrical activity shows summed AP by all cells in the heart

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3
Q

Explain what the Einthovens triangle is

A

-ECG electrodes attached to both arms and the leg for a triangle. Each two- electrode pair constitutes one lead, with one positive and one negative electrode. An ECG is recorded from one lead at a time.

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4
Q

What does the P wave represent on the ECG?

A

-atrial depolarization

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5
Q

What does the QRS complex represent on the ECG?

A
  • ventricular depolarization

- electrical signal near the purkinje fibers

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6
Q

What does the T wave represent on the ECG?

A

-ventricular repolarization

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7
Q

What is a wave on a ECG?

A

-deflection

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8
Q

What is the segment on a ECG?

A
  • baseline between waves

- can be reviewed to see if someone had a heart attack

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9
Q

What is an interval on a ECG?

A
  • Wave+segment
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10
Q

Electrical events of the cardiac cycle

A
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11
Q

Explain what the diastole time period is during the cardiac cycle?

A

-time while cardiac muscle releaxes

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12
Q

Explain the what the systole time period during the cardiac cycle

A

-time while cardiac muscle contracts

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13
Q

The heart cycle between contraction (systole) and relaxation (diastole)

A
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14
Q

What are the different cardiac rhythms? (4)

A
  • normal sinus rhythm
  • tachycardia
  • bradycardia
  • arrhythmia
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15
Q

What are the characteristics of a normal sinus rhythm?

A

-normal heart rate and rhythm

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16
Q

Characteristics of tachycardia

17
Q

Characteristics of bradycardia

18
Q

Characteristics of a arrhythmia rhythm

A

-heart beats in an irregular or abnormal rhythm

19
Q

What occurs during a heart lock (AV block)?

Degrees?

A

-electrical conduction is disrupted at AV node

20
Q

What are the different forms of arrhythmia? (5)

A
  • Heartblock (av block)
  • premature atrial contraction (PAC)
  • Premature ventricular contraction (PVC)
  • flutter
  • fibrillation
21
Q

PAC and PVC ECGs

22
Q

What are the characteristics of a flutter Arrhythmia?

A

200-300 beats/min

-can be further classified as an atrial flutter and ventricular flutter

23
Q

What are the characteristics of a Fibrillation arrhythmia?

A

-rapid, irregular, and unsynchronized contraction

24
Q

What is a asystole rhythm?

A

-flatline=dead

Physio Exam 3 (chapters 12-16) (10 decks)

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