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

Author Question: The aVL lead shows the electrocardiogram in the below figure. This is indicative of the occlusion of ... (Read 47 times)

PhilipSeeMore

  • Hero Member
  • *****
  • Posts: 561
on: Jul 16, 2018
The aVL lead shows the electrocardiogram in the below figure. This is indicative of the occlusion of which of the following coronary arteries?
 
  a. Left coronary artery
  b. Circumflex artery
  c. Right coronary artery
  d. Anterior interventricular branch of the left coronary artery

Question 2

A prolonged RR interval indicates which of the following kinds of cardiac arrhythmia?
 
  a. Atrial fibrillation c. Premature ventricu-lar beats
  b. Sinoatrial block d. Paroxysmal atrial tachycardia


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

djofnc

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: B
The electrocardiogram strip shows ST segment elevation. This occurs in leads II, III, and aVL with the occlusion of the circumflex artery. Left coronary artery occlusion will cause an ST seg-ment elevation in lead I and a depression in lead III. Right coronary occlusion will cause ST segment depression in precordial leads V3 and V4. An occlusion of the anterior interventricular branch of the left coronary artery will cause an ST segment elevation in lead I and an ST segment depression in lead III.

Answer to Question 2

ANS: B
Sinoatrial blocks occur when the impulse generated at the sinoatrial node is blocked before it can enter the atrial muscle. On the electrocardiogram this is demonstrated by a sudden loss of P waves resulting from the absence of atrial depolarization. The contour of the QRS complex is normal, but the RR intervals are usually prolonged, indicating the presence of a junctional es-cape rhythm.


PhilipSeeMore

  • Member
  • Posts: 561
Reply 2 on: Jul 16, 2018
:D TYSM

cam1229

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

This red-bellied lemur shows clearly the traits that characterize strepsirhine primates. This red-bellied lemur shows clearly the traits that characterize strepsirhine primates.
Occlusion or narrowing of the carotid artery disrupts blood flow Occlusion or narrowing of the carotid artery disrupts blood flow
figure 18-1 pituitary hormones figure 18-1 pituitary hormones
This lithograph of the New York draft riots, 1863, shows that although the rioters mainly targeted b This lithograph of the New York draft riots, 1863, shows that although the rioters mainly targeted b
Demonstrate the Application of Triangular, Figure-Eight, and Tubular Bandages Demonstrate the Application of Triangular, Figure-Eight, and Tubular Bandages
The end of a typical line wrench, which shows that it is capable of grasping most of the head of ... The end of a typical line wrench, which shows that it is capable of grasping most of the head of ...
Video: Definitions of stroke volume, preload definition & Factors influencing stroke volume

For a complete list of videos, visit our video library