scholarly journals Associations between ambient temperature and acute myocardial infarction

Open Medicine ◽  
2018 ◽  
Vol 14 (1) ◽  
pp. 14-21 ◽  
Author(s):  
Hong-Ying Zhao ◽  
Jing-Min Cheng
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Ambient Temperature ◽  
Incidence Rate ◽  
Daily Temperature ◽  
Daily Temperature Range ◽  
Temperature Range ◽  
Average Temperature ◽  
Daily Average ◽  
Daily Average Temperature

AbstractBackgroundThe associations between incidence of acute myocardial infarction (AMI) and the ambient temperature were mixed in prior studies.MethodsData of 2033 consecutive admissions of AMI in a central tertiary hospital in North China from 1st Jan 2003 to 31st Dec 2011 were collected. The weather data in this period were from the local meteorological department. Based on the ambient temperature information, we defined several ambient temperature indices, including daily average temperature, extremely low temperature, and daily temperature range, then characterized the independent associations between them and the incidence of AMI.ResultsThe daily average temperature one day before was independently associated with AMI incidence rate: a rise of 5°C of the daily average temperature led to a 5% decrease in AMI admissions. Daily average temperature and temperature range two days before were independently associated with AMI incidence rate: a rise of 5°C of the daily average temperature led to a fall of 6% in AMI admissions, and a rise of 2°C of the daily temperature range led to a rise of 4% in AMI admission.ConclusionLow ambient temperature has substantial association with AMI, and can play an important role in warning and forecasting the incidence.

scholarly journals Effect of meteorological factors and air pollutants on out-of-hospital cardiac arrests: a time series analysis

Heart ◽  
2020 ◽  
Vol 106 (16) ◽  
pp. 1218-1227 ◽  
Author(s):  
Jin-Ho Kim ◽  
Jinwook Hong ◽  
Jaehun Jung ◽  
Jeong-Soo Im
Keyword(s):  
Time Series ◽  
Risk Factor ◽  
Air Pollutants ◽  
Meteorological Factors ◽  
Daily Temperature ◽  
Dependent Manner ◽  
Daily Temperature Range ◽  
Temperature Range ◽  
Average Temperature ◽  
The Impact

ObjectivesWe aimed to investigate the effects of meteorological factors and air pollutants on out-of-hospital cardiac arrest (OHCA) according to seasonal variations because the roles of these factors remain controversial to date.MethodsA total of 38 928 OHCAs of cardiac origin that occurred within eight metropolitan areas between 2012 and 2016 were identified from the Korean nationwide emergency medical service database. A time series multilevel approach based on Poisson analysis following a Granger causality test was used to analyse the influence of air pollution and 13 meteorological variables on OHCA occurrence.ResultsParticulate matter (PM) ≤2.5 µm (PM2.5), average temperature, daily temperature range and humidity were significantly associated with a higher daily OHCA risk (PM2.5: 1.59%; 95% CI: 1.51% to 1.66% per 10µg/m3, average temperature 0.73%, 95% CI: 0.63% to 0.84% per 1°C, daily temperature range: 1.05%, 95% CI: 0.63% to 1.48% per 1°C, humidity −0.48, 95% CI: −0.40 to −0.56 per 1%) on lag day 1. In terms of the impact of these four risk factors in different seasons, average temperature and daily temperature range were highly associated with OHCA in the summer and winter, respectively. However, only PM2.5 elevation (to varying extents) was an independent and consistent OHCA risk factor irrespective of the season.ConclusionsPM2.5, average temperature, daily temperature range and humidity were independently associated with OHCA occurrence in a season-dependent manner. Importantly, PM2.5 was the only independent risk factor for OHCA occurrence irrespective of seasonal changes.

scholarly journals Daylight saving time does not seem to be associated with number of percutaneous coronary interventions for acute myocardial infarction in the Netherlands

2021 ◽  
Author(s):  
L. Derks ◽  
◽  
S. Houterman ◽  
G. S. C. Geuzebroek ◽  
P. van der Harst ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
The Netherlands ◽  
Incidence Rate ◽  
Hospital Admissions ◽  
Control Period ◽  
Daylight Saving Time ◽  
Daylight Saving ◽  
Percutaneous Coronary ◽  
Acute Mi

Abstract Background In multiple studies, the potential relationship between daylight saving time (DST) and the occurrence of acute myocardial infarction (MI) has been investigated, with mixed results. Using the Dutch Percutaneous Coronary Intervention (PCI) registry facilitated by the Netherlands Heart Registration, we investigated whether the transitions to and from DST interact with the incidence rate of PCI for acute MI. Methods We assessed changes in hospital admissions for patients with ST-elevation myocardial infarction (STEMI) or non-STEMI (NSTEMI) undergoing PCI between 1 January 2015 and 31 December 2018. We compared the incidence rate of PCI procedures during the first 3 or 7 days after the transition with that during a control period (2 weeks before transition plus second week after transition). Incidence rate ratio (IRR) was calculated using Poisson regression. Potential gender differences were also investigated. Results A total of 80,970 PCI procedures for STEMI or NSTEMI were performed. No difference in incidence rate a week after the transition to DST in spring was observed for STEMI (IRR 0.95, 95% confidence interval (CI) 0.87–1.03) or NSTEMI (IRR 1.04, 95% CI 0.96–1.12). After the transition from DST in autumn, the IRR was also comparable with the control period (STEMI: 1.03, 95% CI 0.95–1.12, and NSTEMI: 0.98, 95% CI 0.91–1.06). Observing the first 3 days after each transition yielded similar results. Gender-specific results were comparable. Conclusion Based on data from a large, nationwide registry, there was no correlation between the transition to or from DST and a change in the incidence rate of PCI for acute MI.

scholarly journals Incidence Rate of Acute Myocardial Infarction in Hokkaido, Japan.

1998 ◽  
Vol 35 (12) ◽  
pp. 910-917 ◽  
Author(s):  
Junichi Fujisawa ◽  
Shigeyuki Saitoh ◽  
Satoru Takagi ◽  
Shigemichi Tanaka ◽  
Kazuaki Shimamoto
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Incidence Rate

scholarly journals The Association between the Frequency of Rhegmatogenous Retinal Detachment and Atmospheric Temperature

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Dong Yoon Kim ◽  
Hyeseong Hwang ◽  
Jae-Hyung Kim ◽  
Byung Gil Moon ◽  
Sung Min Hyung ◽  
...  
Keyword(s):  
Retinal Detachment ◽  
Rhegmatogenous Retinal Detachment ◽  
Experimental Studies ◽  
Atmospheric Temperature ◽  
Temperature Data ◽  
Daily Temperature ◽  
University Hospital ◽  
Daily Temperature Range ◽  
Temperature Range ◽  
Monthly Average

Rhegmatogenous retinal detachment (RRD) frequency was observed to be higher with an increase in the daily temperature range. This showed that a wide daily range of temperature, rather than the absolute value of the temperature, is associated with the occurrence of RRD. Purpose. To investigate the association between the frequency of rhegmatogenous retinal detachment (RRD) and the atmospheric temperature. Method. A retrospective review of consecutive eyes that had undergone primary RRD surgery from 1996 to 2016 at Chungbuk National University Hospital was conducted. Temperature data (highest, lowest, and mean daily temperatures and daily temperature range) in Chungbuk Province were obtained from the Korean Meteorological Administration database. We investigated the relationship between the daily temperature range and the frequency of RRD surgery. We also analyzed the association between various temperature data and the frequency of RRD surgery. Result. There were 1,394 RRD surgeries from 1996 to 2016. Among them, 974 eyes were included in this study. The monthly average number of RRD operations showed a bimodal peak (in April and October) throughout the year. With the same tendency as the frequency of RRD, the monthly average of the daily temperature range over 1 year also showed a bimodal peak in April and October. There was a significant positive correlation between the monthly average of the daily temperature range and the number of RRD surgeries (r = 0.297, P<0.001). However, there were no associations between RRD frequency and the mean temperature, highest temperature, and lowest temperature. Conclusion. The higher the daily temperature range, the higher was the RRD frequency observed. We speculated that dynamic changes in temperature during the day may affect degrees in chorioretinal adhesion and liquefaction of the vitreous, which may eventually result in retinal detachment. Therefore, further experimental studies on the correlation between temperature changes and retinal detachment are needed.

scholarly journals Toward a Reassessment of Daily Temperature Range Trends

Eos ◽  
2016 ◽  
Vol 97 ◽  
Author(s):  
Terri Cook
Keyword(s):  
Climate Change ◽  
Diurnal Temperature Range ◽  
Daily Temperature ◽  
Range Data ◽  
Data Set ◽  
Daily Temperature Range ◽  
Diurnal Temperature ◽  
Temperature Range

To reduce the uncertainty associated with this important climate change index, recent studies have developed a new diurnal temperature range data set and compared the results to previous estimates.

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