International Journal of Clinical Pharmacy

, Volume 34, Issue 3, pp 468–474 | Cite as

Effects of short-term addition of NSAID to diuretics and/or RAAS-inhibitors on blood pressure and renal function

  • Peder NygårdEmail author
  • Frank G. A. Jansman
  • Willemien J. Kruik-Kollöffel
  • Alex F. W. Barnaart
  • Jacobus R. B. J. Brouwers
Research Article


Background The combined post-operative use of diuretics and/or renin-angiotensin-aldosterone system (RAAS) inhibitors may increase the risk of nonsteroidal anti-inflammatory drug (NSAID) associated renal failure because of a drug–drug interaction. Objective The aim of this study was to investigate the effect of the short-term (<4 days) post-operative combined use of NSAIDs with diuretics and/or RAAS inhibitors on renal function and blood pressure. Setting One teaching hospital in the Netherlands. Method The study-design was a prospective, observational cohort-study. Based on postoperative treatment with NSAIDs, the intervention-group was compared to a control-group (no NSAIDs treatment). Main outcome measure Systolic blood pressure and renal function expressed by the estimated glomular filtration rate (eGFR) calculated with the modification of renal desease formula. Results 97 patients were included in the intervention-group, 53 patients in the control-group. Patient characteristics were comparable except for one variable: ‘combined use of a diuretic with a RAAS inhibitor’ which was higher in the control-group (62 vs. 43 %, p = 0.046). Odds ratio for clinically relevant increase in systolic blood pressure was 0.66 (CI95 % 0.3–1.5). Odds ratio for clinical relevant decrease in renal function was 2.44 (CI95 % 1.1–5.2). On day 4 eGFR of 3 patients in the intervention- and 1 in the control-group was <50 ml/min/1.73 m2. Conclusion Odds ratios showed no significant difference of a clinically relevant increase in systolic blood pressure but showed a higher risk for a clinically relevant decrease in renal function in the intervention group. However this decrease resulted in a relevant impaired renal function (<50 ml/min/1.73 m2) in only 3 patients in the interventiongroup and 1 patient in the control-group. In the post-operative patient, without preexisting impaired renal function, concurrent diuretics and/or renin-angiotensinaldosterone system inhibitor therapy can be combined with short-term NSAID treatment.


Blood pressure Diuretics Drug interaction NSAID RAAS inhibitors Renal insufficiency 



The authors would like to thank all patients who participated in the study. Special thanks go to R. Saleem for her work in including patients and gathering data. We are grateful to M. Arbouw and W. van der Zwet for their help with the statistical analysis.


The work was funded by the Deventer Ziekenhuis, Deventer, The Netherlands.

Conflicts of interest



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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Peder Nygård
    • 1
    Email author
  • Frank G. A. Jansman
    • 2
    • 3
  • Willemien J. Kruik-Kollöffel
    • 2
  • Alex F. W. Barnaart
    • 4
  • Jacobus R. B. J. Brouwers
    • 3
  1. 1.Department of PharmacyDiaconessen Hospital Meppel & Bethesda Hospital HoogeveenMeppelThe Netherlands
  2. 2.Department of Clinical PharmacyDeventer HospitalDeventerThe Netherlands
  3. 3.Department of Pharmacotherapy and Pharmaceutical CareUniversity GroningenGroningenThe Netherlands
  4. 4.Department of OrthopaedicsDeventer HospitalDeventerThe Netherlands

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