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

Author Question: The PR interval viewed on a normal electrocardiogram represents: a. atrial depolarization. b. ... (Read 71 times)

SGallaher96

  • Hero Member
  • *****
  • Posts: 509
on: Jun 25, 2018
The PR interval viewed on a normal electrocardiogram represents:
 
  a. atrial depolarization.
  b. ventricular depolarization.
  c. onset of atrial activation to onset of ven-tricular activity.
  d. electrical systole of the ventricles.

Question 2

A 13-year-old took a weight loss drug that activated the sympathetic nervous system. Which of the following assessment findings would the nurse expect?
 
  a. Decreased myocardial contraction
  b. Decreased heart rate
  c. Increased cardiac conduction
  d. Increased intranodal conduction time


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bd5255

  • Sr. Member
  • ****
  • Posts: 386
Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: C
The PR interval represents the onset of atrial activation to the onset of ventricular activity. The P wave represents atrial depolarization. The QRS complex represents ventricular depolarization. The QT interval represents electrical systole of the ventricles.

Answer to Question 2

ANS: C
Stimulation of the SA node by the sympathetic nervous system rapidly increases cardiac conduc-tion. Stimulation of the sympathetic nervous system would increase myocardial contraction and heart rate. Such simulation would not affect conduction time within the node. These are inherent rates.


SGallaher96

  • Hero Member
  • *****
  • Posts: 509
Reply #2 on: Jun 25, 2018
Correct answers!


bd5255

  • Sr. Member
  • ****
  • Posts: 386
Reply #3 on: Jun 25, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

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?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Retinopathy. Illustration of a normal retina (left) and a diseased retina (right). The diseased reti Retinopathy. Illustration of a normal retina (left) and a diseased retina (right). The diseased reti
Normal breath sounds Normal breath sounds
The geomagnetic polarity time scale shows how Earth’s magnetic pole has changed through geologic tim The geomagnetic polarity time scale shows how Earth’s magnetic pole has changed through geologic tim
Normal Faulting – Basin and Range Province Normal Faulting – Basin and Range Province
The time at which the mailman delivers the mail to Ace Bike Shop follows a normal distribution ... The time at which the mailman delivers the mail to Ace Bike Shop follows a normal distribution ...
Normal compound eye of adult Drosophila Normal compound eye of adult Drosophila
Video: A timeline of the teeth (Explained - No Audio)

For a complete list of videos, visit our video library