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. Author manuscript; available in PMC: 2012 Jun 1.
Published in final edited form as: Anesth Analg. 2011 Apr 5;112(6):1452–1460. doi: 10.1213/ANE.0b013e318212d6a9

FIGURE 3.

FIGURE 3

Effect of diuretics on patients taking multi-antihypertensive therapy. Antihypertensive classes: 0: no antihypertensive drug; 1: 1 class of antihypertensive drug; 1 w. D: 1 class of antihypertensive drug, being a diuretic; 2: 2 classes of antihypertensives; 2 w. D.: 2 classes of antihypertensives including a diuretic; 3: 3 classes of antihypertensives; 3 w. D.: 2 classes of antihypertensives including a diuretic. P values significant by Kruskal Wallis test when compared to the previous category (comparing patients taking diuretics as part of regimen to those not). N.S: nonsignificant.