some data:
An
Australian hospital patient information page.
suggests its temporary
Your sense of smell may change and you may also experience a strange metallic taste in your mouth. This can be caused by the operation or your medication and can take
3 months to fully recover
Some other studies
This one:
This study determined whether coronary artery bypass grafting (CABG) surgery has any effect on olfactory function, employing the Brief Smell Identification Test (B-SIT).All the participants were informed preoperatively about the B-SIT test and the mode ...
www.ncbi.nlm.nih.gov
Conclusions
Our findings suggest that patients after CABG are prone to develop olfactory dysfunction in the early postoperative period and that olfactory dysfunction is associated with postoperative CRP levels.
and
Our study demonstrated that olfactory function was impaired in patients, who underwent on-pump CABG in the postoperative period, and significant impairment in taste function was present in neither off-pump nor on-pump CABG patients. However, the results of our study should be supported by more...
pubmed.ncbi.nlm.nih.gov
Results: Olfactory functions significantly were disrupted in the postoperative period in patients undergoing on-pump CABG (P value < .05), while these functions significantly were not affected in patients undergoing off-pump CABG (P value > .05). During the preoperative period, advanced age and smoking were detected to be independent predictors of impaired olfactory function for the study population. During the postoperative period, smoking, amount of postoperative bleeding and serum low-density lipoprotein (LDL) level were found to be independent predictors of impaired olfactory function for just the On-Pump CABG Group. In both groups, no significant deterioration in taste functions occurred during the postoperative period (P value > .05).
Conclusion: Our study demonstrated that olfactory function was impaired in patients, who underwent on-pump CABG in the postoperative period, and significant impairment in taste function was present in neither off-pump nor on-pump CABG patients. However, the results of our study should be supported by more comprehensive, prospective, randomized controlled trials with more extensive patient series and by further tests.