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Impact of in-hospital blood pressure variability on clinical outcomes in patients with symptomatic peripheral arterial disease

Abstract

Various types of blood pressure (BP) variability have been recognized as risk factors for future cardiovascular events. However, the prognostic impact of in-hospital BP variability in patients with symptomatic peripheral arterial disease (PAD) has not yet been thoroughly investigated. A total of 386 patients with PAD who underwent endovascular therapy in two hospitals were retrospectively included. BP variability was assessed by the coefficient of variation (CV) of systolic BP measured during hospitalization by trained nurses. The primary endpoint was a composite of major adverse cardiovascular events (cardiovascular death, acute coronary syndrome, stroke, and hospitalization for heart failure) and major adverse limb events (major amputation, acute limb ischemia, and surgical limb revascularization). The mean systolic BP and the CV of systolic BP during hospitalization were 130.8 ± 15.7 mmHg and 11.2 ± 4.1%, respectively. During the median follow-up period of 22 months, 80 patients (21%) reached the primary endpoint. Receiver operating characteristic curve analysis showed that the CV of systolic BP significantly predicted major adverse cardiovascular and limb events (area under the curve 0.60, best cutoff value 9.8, P = 0.01). Using the best cutoff value, patients with high BP variability (n = 242) had a higher risk of clinical events than those with low BP variability (n = 144) (26% vs. 12%, P < 0.001). Multivariable analysis indicated that the CV of systolic BP, age, hemodialysis, and atrial fibrillation were associated with the primary endpoint. In conclusion, greater in-hospital systolic BP variability was associated with major adverse cardiovascular and limb events in patients with symptomatic PAD undergoing endovascular therapy.

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Correspondence to Masahiro Suzuki.

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Suzuki, M., Saito, Y., Kitahara, H. et al. Impact of in-hospital blood pressure variability on clinical outcomes in patients with symptomatic peripheral arterial disease. Hypertens Res (2021). https://doi.org/10.1038/s41440-021-00648-8

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Keywords

  • Blood pressure variability
  • Endovascular therapy
  • Peripheral artery disease

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