Active clinical trials for "Vomiting"

In this cross-section study, all patients in the gynecologic ward of Peking Union Medical College Hospital will accepted a survey about the prevalence and severity of nausea and vomiting according to visual analogue scale and WHO classification. Epidemiological, surgical, anaesthetic characteristics and post-operative treatment are considered as predictors for the post-operative nausea and vomiting. The primary objective is the incidence of nausea and vomiting. The secondary objective is the possible predictors of nausea and vomiting.

Nitrous oxide analgesia is used routinely for the dental treatment of anxious or uncooperative pediatric patients. In many instances it is used alone without any supplemental oral premedication. A controversy exists among pediatric dentists and pediatric dental departments regarding the need to apply pre-procedural fasting (PF) or other limitations on children undergoing dental treatment with nitrous oxide alone.The purpose of this study is to investigate the association between PF and the frequency of vomiting in pediatric patients receiving dental treatment with nitrous oxide analgesia.