EKG Basics Quiz

What can an elevated ST segment indicate?

• Possible myocardial infarction or ischemia.

• Normal heart function.

• Dehydration or electrolyte imbalance.

• Increased physical fitness.

What does a flat T wave in an EKG suggest?

• Possible electrolyte imbalance or ischemia.

• Normal heart function.

• Increased heart rate.

• Decreased blood pressure.

What is the role of the SA node in the heart?

• It acts as the natural pacemaker, initiating atrial depolarization.

• It regulates blood pressure by constricting blood vessels.

• It pumps oxygenated blood to the body.

• It prevents backflow of blood into the atria.

What does the term 'arrhythmia' refer to in the context of EKG?

• A normal heartbeat pattern.

• An irregular heartbeat or abnormal heart rhythm.

• A rapid heartbeat without any irregularity.

• A slow and steady heartbeat.

What does a sinus P wave indicate in an EKG?

• Atrial depolarization generated by the SA node.

• Ventricular depolarization initiated by the AV node.

• Atrial repolarization occurring after contraction.

• Ventricular repolarization during diastole.

What is the purpose of the P wave in an EKG?

• To indicate atrial depolarization.

• To indicate ventricular depolarization.

• To represent the heart rate.

• To show the electrical activity of the ventricles.

What is the name of the segment between the end of the P wave and the start of the QRS complex?

• PR segment

• PQ interval

• QT segment

• ST segment

What is the normal duration of the PR interval?

• 0.10 to 0.15 seconds

• 0.12 to 0.20 seconds

• 0.20 to 0.25 seconds

• 0.15 to 0.30 seconds

What is the significance of the heart rate derived from an EKG?

• It indicates the number of heartbeats per minute, reflecting cardiac function.

• It measures the electrical activity of the brain.

• It shows the level of oxygen in the blood.

• It determines the blood pressure of the patient.

What is the name of the interval from the beginning of the P wave to the end of the PR segment?

• PR interval

• QT interval

• ST segment

• RR interval