Cardiac Rhythms : Nursing Course


YOU CAN TAKE THE NURSING CLASS TEST RIGHT AWAY




OR REVIEW THE FOLLOWING NURSING CLASS KNOWLEDGE BLOCKS


When a patient is in normal sinus rhythm, the heart rate will range from:

60-100 beats per minute

Rationale: Normal sinus rhythm is the standard against which all other rhythms are compared. The heart rate for a patient in sinus rhythm is 60-100 beats per minute. The rhythm should be regular and uniform. A patient in normal sinus rhythm is typically without any symptoms or complaints of pain related to the heart.


The normal width of the PR interval on an EKG strip is:

0.12- 0.20

Rationale: The PR interval is measured from the beginning of the P wave to the beginning of the QRS complex. On an EKG strip, this measurement is 3 to 5 small boxes. The PR interval is a measurement of the amount of time it takes for an electrical impulse to travel from the sinus node in the heart, to the ventricles. When a PR interval is greater than .20 seconds, it is an indication of a first degree heart block.


The width of the QRS complex on an EKG strip for a patient in sinus rhythm is:

0.04-0.12

Rationale:

A patient that is in a sinus rhythm, but with a heart rate greater than 100 beats per minute is in:

sinus tachycardia

Rationale:

A heart rhythm in which the atrium is not contracting, resulting in an irregular rhythm and absent P waves is:

atrial fibrillation

Rationale:

A sinus rhythm in which the heart rate is less than 60 beats per minute is:

sinus bradycardia

Rationale:

A cardiac rhythm in which there is flutter waves present on an EKG, with a rapid rate and absent P waves is:

atrial flutter

Rationale:

Any rhythm faster than 100 beats per minute with more than 3 irregular beats in a row is:

ventricular tachycardia

Rationale:

The most serious cardiac rhythm, in which the lower chambers of the heart quiver and can't pump blood is:

ventricular fibrillation

Rationale:

The absence of electrical and mechanical activity in the heart is:

asystole

Rationale:

AND THEN TAKE THE CLASS TEST