This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Systemic effects of obstructive sleep apnea syndrome (OSAS) include all of the following except \nSelect and explain. \nA. Hypertension, B. Cor pulmonale, C. Aortic aneurysm, D. Cardiac arrhythmia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Systemic sequelae of OSAS include hypertension, Cor Pulmonale, and cardiac arrhythmia.', 'role': 'assistant'}]