The study, published in Nutrients, is said to be the first to look at the effect of preoperative whey protein-infused carbohydrate drinks and postoperative early oral feeding in affecting Enhanced Recovery after Surgery (ERAS) of cancer patients.
A total of 118 patients suffering from gynecologic cancers were recruited from the National Cancer Institute at Putrajaya, Malaysia.
Sixty-two were placed in the intervention group, where they drank a beverage consisting of carbohydrates and whey protein on the 6th and 3rd hour before the operation.
After the operation, they were allowed to consume a specially formulated drink consisting of carbohydrates and whey protein. When they can tolerate at least 500ml of this particular drink and other clear fluids, they are allowed to eat a solid diet.
Another 56 patients in the control group had to undergo fasting at least 12 hours before the operation and were allowed to drink clear fluid once there were bowel sounds. Once they were able to tolerate the clear fluid diet, they then proceeded to a nourishing fluid, soft diet then a regular solid diet.
Results showed that there were no serious side effects (such as vomiting or nausea) identified with drinking the whey protein three hours before the operation.
In terms of hospital stay, the intervention group had a shorter postoperative hospital stay as compared to the control group. They also had a lower rate of hospital re-admission (6%), which was 10% lower than the control group.
The intervention group´s digestive system resumed to normal more quickly than the control group. They were able to tolerate a solid diet post-operation in a shorter time than the control group. The intervention group also fared better in terms of preserved muscle mass and handgrip strength.
“The findings of this study showed that the multimodal ERAS approach with preoperative whey protein-infused carbohydrate loading and postoperative early oral feeding resulted in positive postoperative outcomes, less nutritional depletion, greater muscle mass conservation and strength, and concealed inflammatory response,” the researchers concluded.
For future studies, they recommended a long-term study one month and three months after the operation to observe the nutrition and functional status of the patients.
Reference:
Yi, H.C., Ibrahim, Z., Abu Zaid, Z., Mat Daud, Z.A., Md. Yusop, N.B., Omar, J., Mohd Abas, M.N., Abdul Rahman, Z. and Jamhuri, N., 2020. Impact of enhanced recovery after surgery with preoperative whey protein-infused carbohydrate loading and postoperative early oral feeding among surgical gynecologic cancer patients: an open-labelled randomized controlled trial. Nutrients, 12(1), p.264. DOI:10.3390/nu12010264
