Open AccessAn 18 year data-linkage study on the association between air pollution and acute limb ischaemia
Author(s) -
Catherine A Fitton,
Bianca Cox,
James D. Chalmers,
J. J. F. Belch
Publication year - 2021
Publication title -
vasa
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 38
eISSN - 1664-2872
pISSN - 0301-1526
DOI - 10.1024/0301-1526/a000972
Subject(s) - medicine , retrospective cohort study , cohort study , emergency medicine , environmental health
Summary: Background: There is limited information regarding the effects of air pollutants, such as nitrogen oxides (NO x ), nitric oxide (NO 2 ), nitrous oxide (NO) and particulate matter with a diameter smaller than 10 μm (PM10), on acute limb ischaemia (ALI), a peripheral arterial disease (PAD) often with a poor clinical outcome. Patients and methods: We conducted an 18-year retrospective cohort study using routinely collected healthcare records from Ninewells Hospital, Dundee, and Perth Royal Infirmary, in Tayside, Scotland, UK from 2000 to 2017. ALI hospitalisation events and deaths were linked to daily NO x , NO 2 , NO and PM10 levels extracted from publicly available data over this same time period. Distributed lag models were used to estimate risk ratios for ALI hospitalisation and for ALI mortality, adjusting for temperature, humidity, day of the week, month and public holiday. Results: 5,608 hospital admissions in 2,697 patients were identified over the study period (mean age 71.2 years, ±11.1). NO x and NO were associated with an increase of ALI hospital admissions on days of exposure to pollutant (p=.018), while PM10 was associated with a cumulative (lag 0–9 days) increase (p=.027) of ALI hospital admissions in our study. There was no increase of ALI mortality associated with pollution levels. Conclusions: ALI hospital admissions were positively associated with ambient NO x and NO on day of high measured pollution levels and a cumulative effect was seen with PM10.