Central cyanosis in Osler-Weber-Rendu syndrome – MCQ – Answer
Central cyanosis in Osler-Weber-Rendu syndrome is due to – Correct answer: b) Pulmonary arteriovenous fistula
Osler-Weber-Rendu syndrome or hereditary hemorrhagic telangiectasia are multiple capillary hemangiomas on skin, lips, mucosa of nose, upper and lower respiratory tract and gastrointestinal tract. Central cyanosis can occur when there are multiple pulmonary arteriovenous fistulas with significant right to left shunt allowing desaturated blood to reach the systemic circulation.
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