Journal of hypertension
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Journal of hypertension · Nov 2014
Review Meta AnalysisEffect of exposure to PM2.5 on blood pressure: a systematic review and meta-analysis.
Comprehensive studies have confirmed that particulate matter air pollution could trigger myocardial infarction, heart failure and reduce heart rate variability; however, its effect on blood pressure (BP) remains controversial. Therefore, we did a systematic review and meta-analysis to investigate the association and its magnitude between exposure to PM2.5 and BP. ⋯ Exposure to PM2.5 had a statistically significant impact on BP and the magnitude of this effect may have substantially clinical implication.
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Journal of hypertension · Nov 2014
Relationship of circadian pattern of urine sodium excretion to hypertension and obstructive sleep apnoea.
Obstructive sleep apnoea (OSA) and hypertension frequently coexist, and both are associated with higher night-time than daytime urine sodium excretion rate (UNaV). However, the relative contribution of each condition is unknown. We compared the circadian pattern of UNaV in hypertensive and normotensive patients with and without OSA. ⋯ In hypertensive patients, OSA exacerbates the reversal of the normal circadian sodium excretion pattern by elevating nocturnal UNaV, possibly via its BP-elevating effects. However, OSA does not affect nocturnal UNaV in normotensive patients.