« previous next »

Author Question: What is implied by an abnormally prolonged PR interval? a. Atrioventricular block b. ... (Read 137 times)

rachel9

  • Sr. Member
  • ****
  • Posts: 495
on: Jul 16, 2018
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
Reply #1 on: Jul 16, 2018
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
« previous next »
 

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

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

Techniques for applying local anesthesia: (a) topical; (b) infiltration; (c) nerve block; (d) spinal Techniques for applying local anesthesia: (a) topical; (b) infiltration; (c) nerve block; (d) spinal
Prolonged abuse leads to production of stress hormones that can lead to a cascade of effects ... Prolonged abuse leads to production of stress hormones that can lead to a cascade of effects ...
Heat Exchanger Block Diagram Feedforward Control Heat Exchanger Block Diagram Feedforward Control
A dual turbocharger system installed on a small block Chevrolet V-8 engine. A dual turbocharger system installed on a small block Chevrolet V-8 engine.
Antibodies in myasthenia gravis block the acetylcholine receptors at the neuromuscular junction Antibodies in myasthenia gravis block the acetylcholine receptors at the neuromuscular junction
Aspirin and most other NSAIDs block prostaglandins. Aspirin and most other NSAIDs block prostaglandins.
Video: Hemoglobin's affinity with oxygen - carbon dioxide, temperature and bisphosphoglycerate (BPG)

For a complete list of videos, visit our video library