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Simplified Algorithm for the Prevention of Postoperative Nausea and Vomiting in an Oncological Hospital

Postoperative Nausea Clinical Trial

Official title:
Simplified Algorithm for the Prevention of Postoperative Nausea and Vomiting in an Oncological Hospital

Clinical Trial Summary

Previous history of nausea and vomiting induced by prior chemotherapy still not included as predictive factor of postoperative nausea and vomiting, although has been demonstrated that has influence in postoperative outcome. The project aims to evaluate the efficacy of a simplified algorithm in prevention postoperative nausea and vomiting , with pacients with previous history of nausea and vomiting induced by prior chemotherapy, submitted to medium or large surgery.

Clinical Trial Description

Quasi-experimental study, with evaluation after the application of a specific postoperative nausea and vomiting prevention algorithm for cancer patients. The study will be carried out in 2 phases: Phase 1: Team training. In this phase, a protocol was established for PONV prophylaxis, using two questions: 1. Patient undergoing chemotherapy before surgery; 2. Patient presented chemotherapy induced nausea and vomiting (CINV). If the answer is yes to both questions, the anesthetist administers 3 antiemetics (4mg dexametasone, 4mg ondansetron and 0,625mg droperidol). If the answer is no to one of the questions, the anesthetist administers 2 antiemetics (4mg dexametasone and 4mg ondansetron); In this phase, educational measures will be implemented by team meetings and individual approach of all anesthesiologists at ICESP to present the study project and the algorithm. A summary of the the study will be sent daily through the social network Whats App®. The number of patients was calculated taking into account adherence to the new prophylaxis protocol for post-operative nausea and vomiting. If we consider an alpha error of 5% and test power of 80%, to have a NVPO reduction of 41% (current overall incidence) to 25% (incidence after protocol adherence) in high-risk patients, we need to study 270 patients (135 each group adherence and non-adherence to the protocol). Phase 2: Post-training assessment. In the second phase of the study, after the end of the dissemination of the protocol among doctors, the patients will be evaluated on the first postoperative day. The following variables were analyzed: sex, race, age, body mass index, general state of American Society of Anesthesiologist, Apfel scale, type of surgery and anesthesia, use and type of opioids, history of chemotherapy induced nausea and vomiting, type of antiemetics used in the operating room and in the first postoperative day, duration of anesthesia and surgery and nausea and vomiting in 6 and 24 hours after surgery. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04411069
Study type Interventional
Source Instituto do Cancer do Estado de São Paulo
Contact
Status Completed
Phase Phase 2
Start date February 20, 2019
Completion date March 20, 2021
View Details
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