ECG review!
Study online at https://quizlet.com/_2w85q9
1. P wave corresponds with: atrial contraction
2. PR interval - Representing depolarization of the heart *from the SA node through the
atria, AV node, and HIS-Purkinje system*.
- Total amount of time between the contraction (depolarization) of the atria
to the start of ventricular contraction;
*2 parts*= P wave + PR segment
3. PR segment Represents the impulse traveling through the HIS-Purkinje system and is
seen as a flat line between the P wave and Q wave.
4. QRS complex corresponds with: Ventricular contraction
*should be narrow and sharp (no longer/wider than 3 small squares)*
, ECG review!
Study online at https://quizlet.com/_2w85q9
5. ST segment During this period the ventricles are preparing to repolarize
6. T wave corresponds with: ventricular repolarization
7. QT interval measures the time of ventricular depolarization and repolarization
8. Sinus Rhythm - Waveforms and intervals that appear at regular intervals at a a rate of
60-100 bpm (adult)
- Upright and slightly asymmetricl P waves, each followed by a QRS
complex of normal upright contour, duration, and configuration.
- PR interval of normal duration that precedes each QRScomplex
- A flat ST segment followed by an upright and slightly asymmetrical T
wave
- a normal QT interval
- Sometimes the presence of a U wave
9. Cardiac axis the general direction of electricity through the heart
10. As electricity heads to- upward/positive
wards the lead it caus-
es an ___________ de-
flection
, ECG review!
Study online at https://quizlet.com/_2w85q9
11. As electricity heads downward/negative
away from the lead it
causes an ___________
deflection
12. ECG uses - continuous monitoring of the heart rhythm
- identify developing or existing cardiac and non cardiac conditions such
as MI, inflammation, enlargement and/or hypertrophy of the heart mus-
cle
- identify changes in or blockage of the heart's conduction system, accu-
mulation of fluid in the pericardial sac
-identify electrical effects of medication and electrolytes,
-conduct assessments such as stress testing and to obtain a baseline
recording before, during, and after medical procedures
13. ECG lead placing Each configuration or positioning of lead wires is referred to as a "lead"
14. ECG lead - Each configuration or positioning of lead wires is referred to as a
_________.
- Many leads are used to view as much of the heart as possible
-Each lead provides a different view of the heart
-Bipolar or unipolar
15. ECG electrodes - Placed on the patient's skin to detect the heart's electrical activity which
is then transferred to the ECG machine;
- represent electrical poles: positive or negative charges;
- Positioning the ECG electrodes in various positions on the patient's body
give us different views of the heart.
16. Bipolar lead
Study online at https://quizlet.com/_2w85q9
1. P wave corresponds with: atrial contraction
2. PR interval - Representing depolarization of the heart *from the SA node through the
atria, AV node, and HIS-Purkinje system*.
- Total amount of time between the contraction (depolarization) of the atria
to the start of ventricular contraction;
*2 parts*= P wave + PR segment
3. PR segment Represents the impulse traveling through the HIS-Purkinje system and is
seen as a flat line between the P wave and Q wave.
4. QRS complex corresponds with: Ventricular contraction
*should be narrow and sharp (no longer/wider than 3 small squares)*
, ECG review!
Study online at https://quizlet.com/_2w85q9
5. ST segment During this period the ventricles are preparing to repolarize
6. T wave corresponds with: ventricular repolarization
7. QT interval measures the time of ventricular depolarization and repolarization
8. Sinus Rhythm - Waveforms and intervals that appear at regular intervals at a a rate of
60-100 bpm (adult)
- Upright and slightly asymmetricl P waves, each followed by a QRS
complex of normal upright contour, duration, and configuration.
- PR interval of normal duration that precedes each QRScomplex
- A flat ST segment followed by an upright and slightly asymmetrical T
wave
- a normal QT interval
- Sometimes the presence of a U wave
9. Cardiac axis the general direction of electricity through the heart
10. As electricity heads to- upward/positive
wards the lead it caus-
es an ___________ de-
flection
, ECG review!
Study online at https://quizlet.com/_2w85q9
11. As electricity heads downward/negative
away from the lead it
causes an ___________
deflection
12. ECG uses - continuous monitoring of the heart rhythm
- identify developing or existing cardiac and non cardiac conditions such
as MI, inflammation, enlargement and/or hypertrophy of the heart mus-
cle
- identify changes in or blockage of the heart's conduction system, accu-
mulation of fluid in the pericardial sac
-identify electrical effects of medication and electrolytes,
-conduct assessments such as stress testing and to obtain a baseline
recording before, during, and after medical procedures
13. ECG lead placing Each configuration or positioning of lead wires is referred to as a "lead"
14. ECG lead - Each configuration or positioning of lead wires is referred to as a
_________.
- Many leads are used to view as much of the heart as possible
-Each lead provides a different view of the heart
-Bipolar or unipolar
15. ECG electrodes - Placed on the patient's skin to detect the heart's electrical activity which
is then transferred to the ECG machine;
- represent electrical poles: positive or negative charges;
- Positioning the ECG electrodes in various positions on the patient's body
give us different views of the heart.
16. Bipolar lead
