Which of the following can record the electrical impulses of the heart?

Which of the following can record the electrical impulses of the heart?

An electrocardiogram (ECG) records the electrical activity of the heart. The heart produces tiny electrical impulses which spread through the heart muscle to make the heart contract. These impulses can be detected by the ECG machine.

Which of the following represents the time it takes for the ventricles to contract and recover or Repolarize?

The Q-T interval represents the amount of time that it takes the ventricles to depolarize and repolarize and is measured from the beginning of ventricular depolarization (i.e., start of the QRS complex) to the end of repolarization (i.e., end of the T wave).

Which of the following is used to assess the electrical activity of a patient’s heart over a 24 hour period of normal activity?

Holter monitor, which is the most commonly used and records a continuous ECG over a period of 24 to 48 hours. Electrodes are attached to the chest and connected to a small recording device as one goes about daily activities.

What represents the time between contraction of the ventricles and recovery?

The QT interval represents the time during which the ventricles are stimulated and recover after the stimulation. This interval shortens at a faster heart rate and lengthens at a slower heart rate.

Which of the following is the electrical impulse that initiates a chain?

Clinical 3

Question	Answer
Which of the following is the electrical impulse that initiates a chain reaction resulting in contraction?	depolarization
Which of the following is a record of the waves of electrical impulses responsible for the cardiac cycle?	electrocardiogram

Which of the following units is used to measure the heart’s electrical activity?

An electrocardiogram (ECG or EKG) is a test that checks how your heart is functioning by measuring the electrical activity of the heart. With each heart beat, an electrical impulse (or wave) travels through your heart. This wave causes the muscle to squeeze and pump blood from the heart.

Which is correct about the contraction sequence of the heart?

The stages of heart contraction and relaxation can be divided up into 4 parts: ventricular diastole, atrial systole, atrial diastole and ventricular systole. Systole is when the chamber of the heart is contracting, and diastole is when it is relaxing.

Which of the following represents the time it takes for the ventricles?

The normal PR interval is 0.12 to 0.20 seconds. The QRS represents the amount of time it takes the ventricles to depolarize.

Which of the following is used to assess the electrical activity of a patients heart?

An electrocardiogram (ECG) is a medical test that detects cardiac (heart) abnormalities by measuring the electrical activity generated by the heart as it contracts. The machine that records the patient’s ECG is called an electrocardiograph.

What is a view of the heart’s electrical impulses?

The heart is a two stage electrical pump and the heart’s electrical activity can be measured by electrodes placed on the skin. The electrocardiogram can measure the rate and rhythm of the heartbeat, as well as provide indirect evidence of blood flow to the heart muscle.

What are the 4 phases of cardiac cycle?

The cardiac cycle involves four major stages of activity: 1) “Isovolumic relaxation”, 2) Inflow, 3) “Isovolumic contraction”, 4) “Ejection”.

What are the 5 stages of the cardiac cycle?

5 Phases of the Cardiac Cycle

• Atrial Systole.
• Early Ventricular Systole.
• Ventricular Systole.
• Early Ventricular Diastole.
• Late Ventricular Diastole.