Introduction: Treatment of atelectasis has improved dramatically in multiple population. These options of treatment and prevention had been used for hemorrhagic patient developed suddenly atelectasis, but all of them had failed. Therefore, the purpose of this study is to highlight the mechanism and etiology of atelectasis as a secondary complication of subarachnoid hemorrhage.

Case presentation: We report an infrequent case of atelectasis after subarachnoid hemorrhage in a 58-year old male patient. After he had get better, he had developed this respiratory complication then sadly passed away even with intensive care and therapy.

Conclusion: This case report tries to highlight the undiscovered mechanism of atelectasis in subarachnoid hemorrhage population, that is because this investigation playing a significant roll in treatment.

Keywords: Atelectasis; Subarachnoid hemorrhage