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Background: Postoperative nausea and vomiting (PONV) can lead to complications and increased healthcare costs. We investigated whether patient preoperative concern about PONV is associated with postoperative antiemetic use, independently of Apfel score. Methods: Patients eligible for study were English- or Spanish-speaking women with breast cancer undergoing mastectomy, lumpectomy or reconstructive surgery as outpatients during July 2014-July 2017, when the pre-anesthesia clinic routinely screened for preoperative concern via tablet computer-based survey. Excluded were patients who did not rate their concern or lacked Apfel score. Risk factors for concern were evaluated in a multinomial model adjusted for multiple hypotheses. Using generalized linear regression, preoperative concern was tested for association with number of antiemetics administered in the postanesthesia care unit. Results: Of preoperative surveys, 7.1% (58/812) were excluded for missing data, leaving n = 754 surveys contributed by n = 706 subjects (age 26 - 80 years). Patient preoperative concern ranged from none (32.8%), mild (30.2%), moderate (22.9%), severe (7.8%), to very severe (6.2%). Adjusted for age, concern was increased by history of motion sickness (Odds Ratio 1.51, 95% Confidence Interval 1.11 - 2.06) and history of PONV (9.02, 6.30 - 12.90) and decreased by prior surgery without PONV (0.35, 0.23 - 0.53) and Spanish as primary language (0.42, 0.25 - 0.68). Number of postoperative antiemetics, usually 1 (41.2%) or 2 (33.4%) drugs, was unassociated with preoperative concern before or after adjustment for Apfel score. Conclusions: Among women undergoing breast cancer-related surgery, preoperative concern about PONV varies by prior history of PONV and motion sickness and by ethnicity. However, preoperative concern is not associated with postoperative antiemetic medications.

Preoperative Concern about Nausea and Vomiting and Postoperative Use of Antiemetics among Patients Undergoing Breast Cancer-Related Surgery