Podcast
Questions and Answers
What is the record of potential fluctuations during the cardiac cycle called?
What is the record of potential fluctuations during the cardiac cycle called?
- Electromyogram
- Electroencephalogram
- Echocardiogram
- Electrocardiogram (correct)
What type of electrode is connected to an indifferent electrode at zero potential for unipolar recording?
What type of electrode is connected to an indifferent electrode at zero potential for unipolar recording?
- Exciting electrode
- Active electrode (correct)
- Ground electrode
- Passive electrode
How can Einthoven’s triangle be approximated using electrodes?
How can Einthoven’s triangle be approximated using electrodes?
- By placing electrodes on both legs and head
- By placing electrodes on both arms and right leg
- By placing electrodes on both arms and left leg (correct)
- By placing electrodes on both arms and both legs
How are the three standard limb leads used in electrocardiography placed?
How are the three standard limb leads used in electrocardiography placed?
What does a positive deflection in an ECG signify in terms of depolarization movement?
What does a positive deflection in an ECG signify in terms of depolarization movement?
What does a negative deflection in an ECG indicate?
What does a negative deflection in an ECG indicate?
What is the primary reason for the configurations of the waves in each lead of an electrocardiogram?
What is the primary reason for the configurations of the waves in each lead of an electrocardiogram?
Where are the atria located in the chest?
Where are the atria located in the chest?
Which part of the heart is anterolateral to the left ventricle?
Which part of the heart is anterolateral to the left ventricle?
What does the aVR lead 'look at' in the heart?
What does the aVR lead 'look at' in the heart?
What is the initial portion of the QRS complex in leads V1 and V2?
What is the initial portion of the QRS complex in leads V1 and V2?
What is the reason for the small upward deflection at the start of the QRS complex in leads V1 and V2?
What is the reason for the small upward deflection at the start of the QRS complex in leads V1 and V2?
What is the significance of a large R wave in the left ventricular leads (V4-V6)?
What is the significance of a large R wave in the left ventricular leads (V4-V6)?
Which ECG lead shows an initial small Q wave followed by a moderate S wave?
Which ECG lead shows an initial small Q wave followed by a moderate S wave?
What is the main purpose of bipolar limb leads in electrocardiography?
What is the main purpose of bipolar limb leads in electrocardiography?
Which ECG interval represents ventricular depolarization and atrial repolarization?
Which ECG interval represents ventricular depolarization and atrial repolarization?
How does the position of the normal heart affect the electrocardiographic complexes in different leads?
How does the position of the normal heart affect the electrocardiographic complexes in different leads?
Which event corresponds to the ST interval on an ECG?
Which event corresponds to the ST interval on an ECG?
