Does Cardiopulmonary Bypass Change Olfaction?

The loss of the sense of smell, anosmia, can have profound effects on the lives of those who suffer from it. In our clinical practice, we have encountered several patients complaining of anosmia after recently undergoing surgery requiring cardiopulmonary bypass. We want to investigate this peculiar observation and determine if such a link exists. Thus far, there have been no similar studies published, and as such, no previous evidence on this matter. This study will help formalise and clarify these observations, empowering clinicians to better inform patients in the future; if cardiopulmonary bypass procedures do carry a risk of anosmia. This study may also give rise to further research into the matter.