Managing Postoperative Nausea and Vomiting (PONV)
The Prevalence of PONV
Postoperative nausea and vomiting are 2 of the most common adverse events following surgery,
with an estimated incidence of 30% in the general surgical population and up to
Ondansetron, one of the most commonly used antiemetics, has a relatively short half-life (3 to 6 hours).2 Even when treated with ondansetron or other antiemetics, more than 30% of patients still experience PONV within the first 48 hours after surgery.3 Post‑discharge nausea and vomiting (PDNV) is increasingly recognized as a major contributor to the overall burden of PONV, with significant rates reported in the first 24–72 hours after surgery, well after many outpatient surgery patients have been discharged and no longer have access to fast-onset IV antiemetics or direct care.1,4
Risk Factors for PONV1
Patients at Medium-to-High Risk of PONV Have the Following Risk Factors:
- Females
- Nonsmokers
- A history of PONV or motion sickness
- Use of postoperative opioids
- Younger age
- Surgery type
PONV Is a Significant Burden to Patients and Facilities
PONV Is a major cause of patient dissatisfaction after surgery, with patients ranking vomiting as the most undesirable outcome when asked about postsurgical complications5
Poorly managed PONV affects overall length of hospital stay and may require unanticipated hospital readmission, which can lead to increased cost to the patient and to the healthcare system6-8
Consensus guidelines recommend patients at high risk of PONV should be given prophylactic, long-acting antiemetics before discharge
Clinical complications of persistent retching or vomiting can include8,9:
- Aspiration
- Tension on suture lines
- Development of hematomas beneath surgical flaps
- Electrolyte abnormalities
- Dehydration
Enhanced Recovery After Surgery (ERAS) protocols include evidence-based practices to improve patient outcomes, including10:
- Reduced opioid consumption
- Decreased PONV
- Decreased length of stay
References: 1. Gan TJ, Jin Z, Ayad S, et al. Fifth Consensus Guidelines for the Management of Postoperative Nausea and Vomiting: Executive Summary. Anesth Analg. Published online November 14, 2025. 2020;131(2):411-448. doi:10.1213/ANE.0000000000007816. 2.
Important Safety Information
Contraindications
APONVIE is contraindicated in patients with a history of hypersensitivity to aprepitant or any component of the product, and in patients taking pimozide. Increased pimozide levels may cause serious or life-threatening reactions, such as QT prolongation.
Warnings and Precautions
Hypersensitivity Reactions: Serious hypersensitivity reactions, including anaphylaxis, during or soon after administration of aprepitant have occurred. Symptoms including dyspnea, eye swelling, flushing, pruritus, and wheezing have been reported. Monitor patients during and after administration.
Clinically Significant CYP3A4 Drug Interactions: Aprepitant is a substrate, weak-to-moderate (dose-dependent) inhibitor, and an inducer of CYP3A4. Use of pimozide, a CYP3A4 substrate, with APONVIE is contraindicated.
Decrease in INR with Concomitant Warfarin: Use of aprepitant with warfarin, a CYP2C9 substrate, may result in a clinically
significant decrease in the International Normalized Ratio (INR) of prothrombin time.
Monitor the INR in the 2-week period particularly at 7 to
Risk of Reduced Efficacy of Hormonal Contraceptives: The efficacy of hormonal contraceptives may be reduced for
Use in Specific Populations
Avoid use of APONVIE in pregnant women as alcohol is an inactive ingredient. There is no safe level of alcohol exposure in pregnancy.
Adverse Reactions
Most common adverse reactions (incidence ≥3%) are constipation, fatigue, and headache.
Report side effects to Heron at
Indication
APONVIE is a substance P/neurokinin-1 (NK1) receptor antagonist, indicated for the prevention of postoperative nausea and vomiting (PONV) in adults.
Limitations of Use: APONVIE has not been studied for treatment of established nausea and vomiting.
Please see full Prescribing Information.
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