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Effects of the sodium‐glucose co‐transporter‐2 inhibitor dapagliflozin on estimated plasma volume in patients with type 2 diabetes
Author(s) -
Dekkers Claire C. J.,
Sjöström C. David,
Greasley Peter J.,
Cain Valerie,
Boulton David W.,
Heerspink Hiddo J. L.
Publication year - 2019
Publication title -
diabetes, obesity and metabolism
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.445
H-Index - 128
eISSN - 1463-1326
pISSN - 1462-8902
DOI - 10.1111/dom.13855
Subject(s) - dapagliflozin , placebo , type 2 diabetes , population , medicine , diabetes mellitus , urology , endocrinology , alternative medicine , environmental health , pathology
Aims To compare the effects of the sodium‐glucose co‐transporter‐2 (SGLT2) inhibitor dapagliflozin on estimated (ePV) and measured plasma volume (mPV) and to characterize the effects of dapagliflozin on ePV in a broad population of patients with type 2 diabetes. Materials and methods The Strauss formula was used to calculate changes in ePV. Change in plasma volume measured with 125 I‐human serum albumin (mPV) was compared with change in ePV in 10 patients with type 2 diabetes randomized to dapagliflozin 10 mg/d or placebo. Subsequently, changes in ePV were measured in a pooled database of 13 phase 2b/3 placebo‐controlled clinical trials involving 4533 patients with type 2 diabetes who were randomized to dapagliflozin 10 mg daily or matched placebo. Results The median change in ePV was similar to the median change in mPV (−9.4% and −9.0%) during dapagliflozin treatment. In the pooled analysis of clinical trials, dapagliflozin decreased ePV by 9.6% (95% confidence interval 9.0 to 10.2) compared to placebo after 24 weeks. This effect was consistent in various patient subgroups, including subgroups with or without diuretic use or established cardiovascular disease. Conclusions ePV may be used as a proxy to assess changes in plasma volume during dapagliflozin treatment. Dapagliflozin consistently decreased ePV compared to placebo in a broad population of patients with type 2 diabetes.

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