Routine HbA1c Testing in Women Undergoing Major Gynecologic Surgery to Detect Prevalence of Glucose Intolerance [20Q]

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Determine the prevalence of undiagnosed diabetes, prediabetes and overall incidence of glucose intolerance in women undergoing major surgical procedures on the gynecologic oncology service.


Retrospective review of preoperative HbA1c levels obtained at preadmission testing in women scheduled for major gynecologic surgery at NYU Winthrop Hospital by gynecologic oncologists between July 2014 and July 2016. Exclusion criteria were lack of HbA1c within 90 days of scheduled surgery and all women undergoing minor surgical procedures. Diabetes was defined either by established diagnosis or with HbA1c ≥6.5, and prediabetes if HbA1c ranged 5.7- 6.4. Value less than 5.7 was considered normal.


343 women underwent major procedures and had HbA1c levels obtained. Fifty-eight (16.9%) had a known diagnosis of diabetes, and 285 (83.1%) were presumed non-diabetics. Majority (182, 63.9%) had normal HbA1c, 86 (30.2%) were prediabetic and 17 (6%) met criteria for diabetes, for a 36.2% prevalence of abnormal glucose tolerance in presumed non-diabetics. When all 343 women were considered, the diagnosis of glucose intolerance was present in 161 (46.9%), 64.0% of whom were previously undiagnosed.


Nearly half of the women undergoing major gynecologic surgery procedures on the oncology service had impaired glucose tolerance. The diagnosis was previously not established in 64.0%. Pre-surgical assessment of HbA1c is warranted in this high risk population.

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