Author Question: A 31-year-old woman with a congenital heart defect reports episodes of light-headedness and syncope, ... (Read 50 times)

fagboi

  • Hero Member
  • *****
  • Posts: 535
A 31-year-old woman with a congenital heart defect reports episodes of light-headedness and syncope, with occasional palpitations.
 
  A resting electrocardiogram reveals sinus bradycardia, and she is suspected to have sick sinus syndrome. Which of the following diagnostic methods is the best choice to investigate the suspicion?
  A)
  Signal-averaged ECG
  B)
  Exercise stress testing
  C)
  Electrophysiologic study
  D)
  Holter monitoring

Question 2

The physician mentions the patient has developed alveolar dead space. The nurse recognizes that this means
 
  A)
  air that is moved in and out of the lungs with each breath.
  B)
  air that cannot participate in gas exchange and remains in the main bronchus.
  C)
  air is trapped in the conducting airways.
  D)
  alveoli are ventilated but not perfused.



ally

  • Sr. Member
  • ****
  • Posts: 331
Answer to Question 1

Ans:
D

Feedback:

Because sick sinus syndrome frequently involves intermittent or alternating types of arrhythmias, Holter monitoring, which can record changes in rhythm that occur over a period of up to 48 hours, is likely to provide the best picture of the spectrum of cardiac changes in any particular client. Signal-averaged ECG is most useful for identifying specific arrhythmias that may not be clear on traditional surface ECG. Exercise stress testing measures changes in rhythm specifically in response to exercise. Electrophysiologic studies are used diagnostically to determine a person's potential for arrhythmia formation.

Answer to Question 2

Ans:
D

Feedback:

Alveolar dead space results from alveoli that are ventilated but not perfused.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

Everyone has one nostril that is larger than the other.

For a complete list of videos, visit our video library