Serum creatinine elevation after renin-angiotensin system blockade and long term cardiorenal risks: cohort study

Published on Mar 9, 2017in BMJ27.604
· DOI :10.1136/bmj.j791
Morten Schmidt27
Estimated H-index: 27
(Lond: University of London),
Kathryn E. Mansfield8
Estimated H-index: 8
(Lond: University of London)
+ 4 AuthorsLaurie A. Tomlinson17
Estimated H-index: 17
(Lond: University of London)
Objective  To examine long term cardiorenal outcomes associated with increased concentrations of creatinine after the start of angiotensin converting enzyme inhibitor/angiotensin receptor blocker treatment. Design  Population based cohort study using electronic health records from the Clinical Practice Research Datalink and Hospital Episode Statistics. Setting  UK primary care, 1997-2014. Participants  Patients starting treatment with angiotensin converting enzyme inhibitors or angiotensin receptor blockers (n=122 363). Main outcome measures  Poisson regression was used to compare rates of end stage renal disease, myocardial infarction, heart failure, and death among patients with creatinine increases of 30% or more after starting treatment against those without such increases, and for each 10% increase in creatinine. Analyses were adjusted for age, sex, calendar period, socioeconomic status, lifestyle factors, chronic kidney disease, diabetes, cardiovascular comorbidities, and use of other antihypertensive drugs and non-steroidal anti-inflammatory drugs. Results  Among the 2078 (1.7%) patients with creatinine increases of 30% or more, a higher proportion were female, were elderly, had cardiorenal comorbidity, and used non-steroidal anti-inflammatory drugs, loop diuretics, or potassium sparing diuretics. Creatinine increases of 30% or more were associated with an increased adjusted incidence rate ratio for all outcomes, compared with increases of less than 30%: 3.43 (95% confidence interval 2.40 to 4.91) for end stage renal disease, 1.46 (1.16 to 1.84) for myocardial infarction, 1.37 (1.14 to 1.65) for heart failure, and 1.84 (1.65 to 2.05) for death. The detailed categorisation of increases in creatinine concentrations ( Conclusions  Increases in creatinine after the start of angiotensin converting enzyme inhibitor/angiotensin receptor blocker treatment were associated with adverse cardiorenal outcomes in a graduated relation, even below the guideline recommended threshold of a 30% increase for stopping treatment.
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#2Masao Iwagami (Lond: University of London)H-Index: 6
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#2Flávio Danni Fuchs (UFRGS: Universidade Federal do Rio Grande do Sul)H-Index: 42
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