This protocol addresses hyperemesis gravidarum with metabolic disturbance (ICD-10 O21.1 / ICD-11 JA60.1.1) in the specific situation where first-line pharmacotherapy has been tried on a regular schedule but nausea and vomiting have not been adequately controlled. A defined second-line approach is indicated at this stage.
First-line pharmacotherapy combining Pyridoxine (Vitamin B6) and Doxylamine, taken regularly as prescribed, did not achieve sufficient reduction in the severity and frequency of nausea and vomiting. Non-achievement of that target is the clinical trigger for escalation to this protocol.
Reduction in the severity and frequency of nausea and vomiting.