我在家测量血压时，一侧手臂的读数总是更高。这种现象是否正常？
回答 Rekha Mankad, M.D.
双臂的血压读数存在微小差异一般是正常的。但差异超过 10 毫米汞柱（mm Hg）就应该引起注意了。此差异可能见于血压读数的顶部数字（收缩压），也可能见于底部数字（舒张压）。
如果手臂间舒张压差异反复超过 10 至 15 mm Hg，血管疾病风险可能增加，心脏病风险也可能随着时间的推移而增加。
手臂间血压测量值差异反复超过 10 mm Hg 可能是某种健康问题的征兆，例如：
- 手臂动脉堵塞，称为外周动脉疾病
- 糖尿病
- 肾脏疾病
- 心脏问题
如果您双臂间血压读数差异很大，请咨询医务人员。医务人员在将来可能使用血压读数较高的一侧手臂来测量您的血压。
显示参考文献
- Clark CE, et al. Associations between systolic interarm differences in blood pressure and cardiovascular disease outcomes and mortality. Hypertension. 2021; doi:10.1161/HYPERTENSIONAHA.120.15997.
- Li M, et al. Elevated interarm systolic blood pressure difference is positively associated with increased likelihood of coronary artery disease. International Journal of Hypertension. 2021; doi:10.1155/2021/5577957.
- Clark CE, et al. Systolic inter-arm blood pressure difference and risk of cognitive decline in older people: A cohort study. British Journal of General Practice. 2020; doi:10.3399/bjgp20X709589.
- Yu S, et al. Association of interarm blood pressure difference with cardio-cerebral vascular disease: A community-based cross-sectional study. Journal of Clinical Hypertension. 2019; doi:10.1111/jch.13604.
- Chang Y, et al. Inter-arm blood pressure difference is associated with recurrent stroke in non-cardioembolic stroke patients. Scientific Reports. 2019; doi:10.1038/s41598-019-49294-8.
Original article: https://www.mayoclinic.org/zh-hans/diseases-conditions/high-blood-pressure/expert-answers/blood-pressure/faq-20058230