Preguntas - 21. Taller de Electrocardiograma

Las respuestas correctas están marcadas en verde.

What does the P wave represent in an ECG?

A) Repolarization of the ventricles

B) Depolarization of the atria Respuesta correcta

C) Depolarization of the ventricles

D) Repolarization of the atria

Nota explicativa

The P wave indicates atrial depolarization.

What is the normal heart rate range in beats per minute?

A) 40-60

B) 60-100 Respuesta correcta

C) 100-120

D) 120-140

Nota explicativa

Normal heart rate is between 60 and 100 beats per minute.

In sinus rhythm, what is the typical direction of the P wave in lead II?

A) Negative

B) Positive Respuesta correcta

C) Isobiphasic

D) Absent

Nota explicativa

The P wave in lead II is positive in sinus rhythm.

What is the heart rate if there are 4 large squares between two R waves?

A) 50 beats per minute

B) 75 beats per minute Respuesta correcta

C) 100 beats per minute

D) 150 beats per minute

Nota explicativa

Heart rate is calculated as 300 divided by the number of large squares.

What ECG change is observed in mild hyperkalemia?

A) Absence of P wave

B) Peaked T waves Respuesta correcta

C) Prolonged QT interval

D) Sinusoidal QRS complex

Nota explicativa

Mild hyperkalemia shows peaked, symmetric T waves.

Documento creado: 08/05/2025 17:17

Pregunta 1: What does the P wave represent in an ECG?