MEDICINE
CARDIOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
the PR intervals will be greater than 0.20 seconds.
|
|
|
an upright P wave will appear after the QRS complex.
|
|
|
an inverted P wave will appear before the QRS complex.
|
|
|
a small inverted P wave will be buried in the QRS complex.
|
Detailed explanation-1: -If an impulse generated by the AV node begins moving upward through the atria before the other part of it enters the ventricles: an inverted P wave will appear before the QRS complex.
Detailed explanation-2: -The P wave and PR segment is an integral part of an electrocardiogram (ECG). It represents the electrical depolarization of the atria of the heart. It is typically a small positive deflection from the isoelectric baseline that occurs just before the QRS complex.
Detailed explanation-3: -The beginning of the QRS complex of the electrocardiogram (ECG) immediately precedes which of the following events? The QRS complex is a recording of ventricular depolarization. This depolarization begins just prior to the ventricular contraction it initiates.
Detailed explanation-4: -Second-degree or incomplete AV block occurs when there is intermittent atrial to ventricle conduction. That is, the P waves are sometimes related to the QRS complexes. It often occurs in a regular P:QRS pattern with ratios of 2:1.