Chapter 26 Flashcards
This arrhythmia occurs when there is a disruption of the electrical impulse through the heart
Heart block
What interval represents atrial depolarization
PR wave
What wave represents the repolarization of the ventricles?
T wave
Which structure is created from the repolarization of the ventricles
T wave
What wave represents atrial depolarization?
P wave
What state creates electrical activity that can be picked up on the ECG tracing?
Polarized and repolarized state
The PR segment follows the P wave and appears as an isoelectric line ?
True
Which recorder is used to monitor the heart over a 24 to 48 hour period while patient goes ok with their activities?
Holter monitor
The patients heart rate is 38 beats per minute. What changes should you make before obtaining the tracing?
Decrease the chart speed
The valve between the left upper and lower chambers of the heart is ?
Bicuspid or mitral valve
Which wave is a large triangular shape?
R wave
A specialized intermodal tract that takes the impulse to the left atrium is?
Bachmans bundle
Which artifact appears as jagged peaks with irregular height and spacing and thick looking?
Somatic
State where cardiac cells are resting?
Polarized state
Adult heart is under 60 beats per min and this normal rhythm for a conditioned athlete?
Sinus bradycardia
If you turn a baseline filter it will help decrease what type of artifact?
Wandering baseline
Another name for bicuspid valve?
Mitral valve
What is true regarding the ST segment?
It is an isoelectric line
When there is an artifact on leads I and III the right arm electrode needs to be checked
False left arm
On an ECG tracing what represents a period time with no electrical activity?
An isoelectric line
What is a deflection from the baseline?
Wave
What is it when ventricles quiver uncontrollably the orient has no pulse and is not breathing?
Ventricular fibrillation
A signal distortion or unwanted erratic movement of the stylus causes by outside interference?
Artifact
A lead wire breaks what artifact would appear on the tracing?
Flatline artifact
What ECG wave or segment is a negative deflection and represents intraventricular septal depolarization?
Q wave
What ECG wave or segment represents ventricular repolarization?
T wave
The ECG Rhythm strip is evaluated from left to right. The following should be assessed?
Rate, rhythm and appearance of the segments waves and intervals
Which test stays on patient for 30 days?
Cardiac event recorder
What does P wave represent?
First wave in tracing
Phase of heartbeat when the heart is at rest and atrial fills with blood?
Diastole
Artifact with jagged peaks and spikes?
AC interference
What is a contractiva phase of a heartbeat?
Systole
Lead III is created using ?
Left arm and left leg
Standard leads are also called argumented leads
False
Standard leads are measured from negative to positive pole?
True
Artifact can occur If you put electrode on bony area or with breathing movements?
Wandering baseline
What happens if leas wires are wrapped closely?
AC interference
Patient heart rate is 100 beats per minute what do you need to change?
Increase chart speed
What blood vessels that carry oxygen rich blood lungs to heart?
Pulmonary vein
On an ECG tracing what is made up of many waves?
Complex
What is another name for interventicular bundle?
Bundle of his/ AV bundle
Upward movement away from baseline in ECG tracing?
Positive deflection
