This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: In second-degree AV block type I, the PR interval _____. a. shortens b. is absent c. is ... (Read 148 times)

eruditmonkey@yahoo.com

  • Hero Member
  • *****
  • Posts: 546
on: Jun 25, 2018
In second-degree AV block type I, the PR interval _____.
 
  a. shortens
  b. is absent
  c. is inconstant
  d. remains constant

Question 2

A line between waveforms is called a(n) _____.
 
  Fill in the blanks with correct word


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fwbard

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Jun 25, 2018
Answer to Question 1

C
In second-degree AV block type I, the PR interval is inconstant and the PR interval after a nonconducted P wave is shorter than the interval preceding the nonconducted beat.
Although progressive lengthening is a phrase that was used for many years to describe the behavior of the PR intervals associated with second-degree AV block type I, use of this terminology is no longer recommended; rather, the term inconstant or generally progressive PR intervals is recommended. Use of the term inconstant or generally progressive PR intervals is important because many type I AV blocks are atypical, missing one or more of the features of the classic Wenckebach phenomenon. For example, the second conducted PR interval after a blocked impulse may fail to show the greatest increase in length; instead, the PR interval may actually shorten and then lengthen in the middle of a grouped beating pattern. Alternately, the duration of the PR intervals may show no obvious change in the middle or for a few beats just before the end of a group.

Answer to Question 2

segment


eruditmonkey@yahoo.com

  • Member
  • Posts: 546
Reply 2 on: Jun 25, 2018
:D TYSM

jackie

  • Member
  • Posts: 324
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

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?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Phenotypic ratios in progeny reveal the type of cross Phenotypic ratios in progeny reveal the type of cross
A beam-type torque wrench that displays the torque reading on the face of the dial. The beam display ... A beam-type torque wrench that displays the torque reading on the face of the dial. The beam display ...
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.
Connections of a nitric acid plant, intermediate pressure type Connections of a nitric acid plant, intermediate pressure type
The DNA of S-type bacteria can transform R-type bacteria into the same S type. The DNA of S-type bacteria can transform R-type bacteria into the same S type.
The components of the wild-type lac operon The components of the wild-type lac operon
Video: Conduction of action potentials

For a complete list of videos, visit our video library