Open Surgery

The objective of this study is to evaluate the Symani System's safety and effectiveness for microsurgical anastomosis during free tissue transfer surgery and lymphovenous anastomosis surgery. The primary endpoints are: * Effectiveness- Rate of intraoperative anastomosis patency at first attempt. * Safety- Freedom from device-related adverse events. Participants will receive treatment as standard of care and be asked to: * Allow the researchers to access and use their information. * If participants are undergoing a lymphedema procedure, they will be asked to undergo a questionnaire as part of the study. * Participants will be asked to comply with the follow-up visits and complete all study procedures/questionnaires as outlined in the protocol.

The role of perioperative IV administration of nimodipine, an L-type calcium channel antagonist which is capable of crossing the blood-brain barrier, on peri-operative opioid and anesthetics requirements, pain intensity, opioid-related side effects and early postoperative bowel mobility in patients undergoing surgical treatment for bowel cancer with open radical colectomy remains scarcely explored. A prospective double-blind, randomized controlled trial investigating the effect of perioperative IV administration of nimodipine in patients undergoing open colectomy for cancer treatment is therefore conducted.

Dexamethasone is almost one of the most commonly used drugs for postoperative nausea and vomiting (PONV) prevention. However, PONV is still a complex problem to be solved; for example, even with preoperative dexamethasone administration, there are still some patients still experience PONV within 24 hours postoperatively. Compared to dexamethasone, dexamethasone palmitate has a long-lasting anti-inflammatory effect, 2-5 times that of traditional water-soluble dexamethasone, with fewer adverse effects. This trial aims to assess the effect and safety of preoperative dexamethasone palmitate on PONV after open surgery.