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  • Title: Factors associated with blood pressure changes in patients receiving diclofenac or etoricoxib: results from the MEDAL study.
    Author: Krum H, Swergold G, Curtis SP, Kaur A, Wang H, Smugar SS, Weir MR, Laine L, Brater DC, Cannon CP.
    Journal: J Hypertens; 2009 Apr; 27(4):886-93. PubMed ID: 19516186.
    Abstract:
    OBJECTIVE: To evaluate the hypertensive effects of etoricoxib and diclofenac relative to baseline hypertension risk factors in arthritis patients. METHODS: Multivariate analysis of data from the Multinational Etoricoxib and Diclofenac Arthritis Long-term (MEDAL) study (n = 23 504). We evaluated risk factors for change in systolic blood pressure (BP) (SBP) and diastolic BP (DBP) at 4 months versus baseline; exceeding predefined limits of change (PLoC) in BP anytime during the study; and the effect of concomitant antihypertensive class on SBP and exceeding SBP PLoC. RESULTS: Increased SBP was most highly associated with history of hypertension (+3.04 mmHg; P < 0.0001), as were increased DBP (+1.28 mmHg; P < 0.0001), and exceeding DBP PLoC [odds ratio (OR) = 1.83; P < 0.0001]. Exceeding SBP PLoC (OR = 1.50; P < 0.0001) was most highly associated with age at least 65 years. Etoricoxib (vs. diclofenac) was also significantly associated with increased SBP (P < 0.0001), DPB (P < 0.0001 to P = 0.0015), and exceeding SBP PLoC (P < 0.0001 to P = 0.002). Compared with no antihypertensive medication, background calcium channel blockers (CCB) were associated with a small, nonsignificant decrease in SBP (-0.60 mmHg) and no increased odds of exceeding SBP PLoC [OR = 1.00 (95% CI 0.71, 1.42)]. All other antihypertensive classes were associated with either no change or numerically or statistically significantly increased SBP and increased odds of exceeding PLoC. CONCLUSION: History of hypertension and age at least 65 years were most strongly associated with increased BP. Treatment with etoricoxib vs. diclofenac was also a significant factor for increased BP. CCBs appear to maintain antihypertensive effects with concurrent NSAID therapy better than other examined antihypertensive drug classes.
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