Apfel et al developed a score for predicting the risk of postoperative vomiting in an adult. The authors are from the University of Wuerzburg in Germany.
(1) adults having elective ear, nose and throat surgery
(2) inhalational anaesthesia used with low-dose opioids and no prophylactic antiemetics.
(2) age in years
(3) smoking status
(4) history of motion sickness and/or previous postoperative nausea and vomiting
(5) duration of anaesthesia in hours
history of motion sickness and/or previous postoperative nausea and vomiting
= (1.28 * (points for gender)) – (0.029 * (age in years)) – (0.74 * (points for smoking)) + (0.63 * (points for history)) + (0.26 * (duration in hours)) – 0.92
probability of postoperative vomiting =
= 1 / (1 + EXP((-1) * Z))
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Purpose: To predict a patient's risk for postoperative vomiting using the risk score of Appel et al.
Specialty: Anesthesiology, Gastroenterology, Pharmacology, clinical
Objective: risk factors
ICD-10: R11, Z48,