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 56 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
Gracias!

Chelseyj.hasty

  • Member
  • Posts: 319
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Examples of four letter formats: (A) block style, (B) modified block style, (C) modified block style ... Examples of four letter formats: (A) block style, (B) modified block style, (C) modified block style ...
Effect of stimulus type on graded potentials. Effect of stimulus type on graded potentials.
Sites of cholinergic antagonist actions. Muscarinic antagonists block cholinergic receptors in the ... Sites of cholinergic antagonist actions. Muscarinic antagonists block cholinergic receptors in the ...
A point-type ignition system showing the distributor cam which opens the points A point-type ignition system showing the distributor cam which opens the points
Schematic representations of (a) random, (b) alternating, (c) block, and (d) graft copolymers. Schematic representations of (a) random, (b) alternating, (c) block, and (d) graft copolymers.
Comparison of Type 1 Diabetes to Type 2 Diabetes Comparison of Type 1 Diabetes to Type 2 Diabetes
Video: Oogenesis Animation

For a complete list of videos, visit our video library