EDAIC Multiple Choice Questions with simplified explanations. FREE UPLOADS BY WWW.TARGETEDAIC.COM (38)

The section, EDAIC Multiple Choice Questions with simplified explanations, covers a different topic each day with the intent that candidates can prepare one small topic each day, making steady progress in their exam preparation.

Question: Regarding Eisenmenger’s syndrome, the following statements are true:

a. There is a reversible left to right shunt
b. Increased pulmonary vascular resistance is a consequence of right heart failure
c. Can be a coomplication of Blalock–Taussig shunt
d. Has a good prognosis after correcting the cardiac defect
e. Central cyanosis is a feature

Answers:

1. false
2. false
3. true
4. false
5. true

Explanation:

• Eisenmenger’s syndrome is characterized by pulmonary hypertension (mean
  pulmonary artery pressure of >25 mmHg at rest and >30 mmHg with exercise).
• This increased pulmonary vascular resistance resulting in an increased workload placed on
  the right heart leading to a right to left shunt with subsequent central cyanosis.
• The shunt flow depends on the PVR: SVR ratio.
• Death occurs from irreversible right ventricular failure and arrhythmias.
• Pulmonary hypertension could also result from an iatrogenic increase in pulmonary blood flow after corrective cardiac surgery (e.g. Blalock–Taussig shunt, Waterston shunt, Potts shunt).
• Left ventricular dysfunction (LVEF <50%) right ventricular hypertrophy, and signs and symptoms of heart failure predict mortality in patients with Eisenmenger.
• Surgical correction of the cardiac defect is unlikely to be successful in reversing the pulmonary hypertension

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The ‘EDAIC Multiple Choice Questions with simplified explanations’ section covers a different topic each day with the intent that candidates can prepare one small topic each day, making steady progress in their exam preparation.