Author Question: What is implied by an abnormally prolonged PR interval? a. Atrioventricular block b. ... (Read 132 times)

rachel9

  • Sr. Member
  • ****
  • Posts: 495
What is implied by an abnormally prolonged PR interval?
 
  a. Atrioventricular block
  b. Bundle-branch block
  c. Myocardial infarction
  d. Valvular detachment

Question 2

What is the normal period of time for the PR interval?
 
  a. Not longer than 0.20 sec
  b. Not longer than 0.30 sec
  c. Not longer than 0.45 sec
  d. Not longer than 0.50 sec



Anonymous

  • Sr. Member
  • ****
  • Posts: 317
Answer to Question 1

ANS: A
PR intervals longer than 0.20 sec suggest that the impulse is abnormally delayed at the AV node and a block is present.

Answer to Question 2

ANS: A
Normally, the PR interval represents a period no longer than 0.20 sec.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

The longest a person has survived after a heart transplant is 24 years.

For a complete list of videos, visit our video library