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Postoperative Olfaction Alteration Following Laparoscopic Bariatric Surgery
Magdalena Pisarska-Adamczyk1, Piotr Tylec1, Natalia Gajewska1
12nd Department of General Surgery, Jagiellonian University Medical College, Jakubowskiego 2, 30-688 Kraków, Poland.
Journal of Clinical Medicine
|April 30, 2021
Summary
Bariatric surgery, particularly laparoscopic sleeve gastrectomy (LSG), can temporarily impair odor threshold shortly after the procedure. This olfactory change was observed 24 hours post-surgery in LSG patients compared to controls.
Area of Science:
- Bariatric Surgery
- Olfactory Function
- Gastroenterology
Background:
- Bariatric surgery effectively treats morbid obesity by altering nutritional habits, influencing postoperative recovery.
- Dietary preferences are strongly linked to olfaction, yet short-term olfactory changes post-surgery are understudied.
- Understanding immediate olfactory alterations can optimize postoperative care and patient outcomes.
Purpose of the Study:
- To investigate the impact of bariatric surgery on olfactory function in the early postoperative period.
- To compare olfactory changes between laparoscopic sleeve gastrectomy (LSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB) patients.
- To assess olfactory changes relative to a control group undergoing non-oncological elective surgery.
Main Methods:
- Prospective study involving 83 patients (39 LSG, 14 LRYGB, 30 control) from April to December 2018.
- Olfactory function assessed quantitatively and qualitatively using the Sniffin Sticks test (odor threshold, discrimination, identification) pre-surgery and 24 hours post-surgery.
- Control group received non-oncological elective surgical procedures.
Main Results:
- A significant decrease in odor threshold scores was observed in the bariatric surgery group (9.3 to 8.2, p=0.032) 24 hours post-surgery.
- No significant changes were found in odor discrimination, identification, or total scores for the overall bariatric group.
- Specific analysis revealed significant differences in odor threshold and total scores only in patients who underwent LSG.
Conclusions:
- Bariatric surgery, specifically LSG, leads to a significant deterioration in odor threshold within 24 hours post-operation.
- Olfactory function changes observed post-LSG suggest a potential impact on sensory perception and nutritional intake.
- Further research is warranted to understand the long-term implications and mechanisms of olfactory changes after bariatric procedures.
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