Author Question: A client diagnosed with angina asks the nurse why she experiences chest pain while walking up ... (Read 43 times)

frankwu · **on:** Jul 23, 2018

A client diagnosed with angina asks the nurse why she experiences chest pain while walking up stairs. The nurse explains that which item has likely occurred in this client?

1. Narrowing of the coronary arteries
2. Addisonian crisis
3. An infection of the floor of the mouth
4. A buildup of lactic acid in the calves

Question 2

A client suffers a myocardial infarction of the right atrium. The nurse notices that the client is in an irregular heart rhythm. From this information, the nurse infers there is a disturbance of which node of the cardiac conduction system?

1. Internodal pathway
2. Sinoatrial (SA) node
3. Atrioventricular (AV) node
4. Bundle of His

ankilker · **Reply #1 on:** Jul 23, 2018

Answer to Question 1

Correct Answer: 1
Rationale 1: Coronary artery narrowing results in chest pain upon exertion, a condition known as angina pectoris.
Rationale 2: Addisonian crisis occurs from a lack of circulating adrenocortical steroids.
Rationale 3: Ludwig angina is an infection of the floor of the mouth.
Rationale 4: Lactic acid buildup is a byproduct of anaerobic metabolism. In angina, it will be preceded by coronary artery narrowing.
Global Rationale: Coronary artery narrowing results in chest pain upon exertion, a condition known as angina pectoris. Addisonian crisis occurs from a lack of circulating adrenocortical steroids. Ludwig angina is an infection of the floor of the mouth. Lactic acid buildup is a byproduct of anaerobic metabolism. In angina, it will be preceded by coronary artery narrowing.

Answer to Question 2

Correct Answer: 2
Rationale 1: The internodal pathway carries an action potential from the SA node to the AV node.
Rationale 2: The SA node is located in the tissue of the wall of the right atrium. Its function can be impaired after a right atrial infarction.
Rationale 3: The AV node sits between the atria and ventricles, and is not typically affected by a right atrial infarction.
Rationale 4: The bundle of His is located just below the AV node. It is not typically damaged during an infarction of the right atrium.
Global Rationale: The SA node is located in the tissue of the wall of the right atrium. Its function can be impaired after a right atrial infarction. The internodal pathway carries an action potential from the SA node to the AV node. The AV node sits between the atria and ventricles, and is not typically affected by a right atrial infarction. The bundle of His is located just below the AV node. It is not typically damaged during an infarction of the right atrium.