Patients who drank coffee, rather than water, after bowel surgery to
remove a part of their colon experienced a quicker return to bowel
movements and tolerance of solid food.
Those are two of the key findings of a comparative study of 80 patients,
carried out at University Hospital Heidelberg, Germany, and published in
the surgical journal BJS.
“Post-operative bowel obstruction is a common problem after abdominal
surgery and the aim of this study was to test our theory that coffee
would help to alleviate this” says lead author Dr Sascha Müller, who is
now based at Kantonsspital St Gallen, Switzerland.
The 80 patients were randomised into coffee and water groups before
their operation, with one patient in the water arm subsequently excluded
due to a change in their surgical procedure.
Patient characteristics were similar in both groups. Their average age
was 61 years and 56 per cent were male.
Just over half (56 per cent) had colonic cancer, 28 per cent had
diverticular disease (a structural problem with the wall of their
colon), 13 per cent had inflammatory bowel disease and four per cent had
other conditions. The majority had open surgery (61 per cent) and the
remainder had laparoscopic surgery.
The patients were given 100mls of coffee or water three times a day.
Key findings were:
-
Time to first bowel movement after surgery was just over 60 hours in
the coffee group and 74 hours in the water group.
-
The coffee group were able to tolerate solid food in just over 49
hours, compared to just under 56 hours in the water group.
-
The coffee drinkers were also able to pass wind just under 41 hours
after surgery, compared with over 46 hours for the water group.
-
Length of hospital stay and ill health were similar in both groups.
“This randomised trial showed that the time to first bowel movement
after surgery was much shorter in the coffee drinkers than the water
drinkers” says Dr Müller.
“Although 10 per cent of the patients did not want to drink strong
coffee at this time, it was well accepted by the group and no
coffee-related complications were noted.
“It is not clear how coffee stimulates the intestine and caffeine
appears to have been ruled out by previous studies, which found that
decaffeinated coffee, which was not used in this study, also has
beneficial effects.
“Whatever the mechanism, it is clear that postoperative coffee
consumption is a cheap and safe way to activate bowel motility after
elective colonic surgery.”
The article can be viewed free online at: http://onlinelibrary.wiley.com/doi/10.1002/bjs.8885/abstract
