Rhythm InterpretationPregunta 6 de 100
A technician is explaining a tracing to a student and points to the rounded wave that follows each QRS complex. What does this wave represent?
a.Repolarization of the ventricles
b.Depolarization of the ventricles
c.Conduction delay at the AV node
d.Contraction of the atria
Explicación
The T wave follows the QRS and represents ventricular repolarization, the recovery phase in which the ventricular cells return to their resting electrical state. Ventricular depolarization is the QRS itself. The AV node delay is represented by the flat segment within the PR interval, and atrial contraction follows the P wave.
Practica las 100 preguntas gratis — sin registro.
Preguntas relacionadas de este tema
- Using the 300 method on a regular rhythm, a technician counts four large boxes between two consecutive R waves. What is the heart rate?
- A patient has an irregular rhythm. The technician counts 11 QRS complexes in a six-second strip. What is the approximate heart rate?
- What electrical event does the P wave represent on an EKG tracing?
- Using the 1500 method, a technician counts 20 small boxes between two consecutive R waves on a regular strip. What is the heart rate?
- Which set of findings meets the criteria for normal sinus rhythm?
- A sleeping athlete on telemetry shows a regular rhythm at 52 beats per minute with an upright P wave before each narrow QRS and a PR interval of 0.16 second. How should this rhythm be identified?
Última revisión: · proceso editorial
Equipo Editorial de PrepPass · Verificado con NHA Certified EKG Technician (CET) Exam · Cómo revisamos