Navigation Links
Heat waves reduce length of pregnancy
Date:3/31/2014

When temperatures reach 32C or higher over a period of four to seven days, the risk of early-term delivery is 27% higher than on typical summer days, according to a study led by Nathalie Auger of the University of Montreal's Department of Social and Preventive Medicine. The study involved data from 300,000 births that took place in Montreal between 1981 to 2010 with summer temperatures recorded by Environment Canada during this period. Auger is also affiliated with the university's CHUM Superhospital Research Centre.

The research team sought to identify, from June through September, the probability of preterm (less than 37 gestational weeks), early-term (37-38 weeks), and full-term (39 weeks or more) deliveries during a heat wave. Specifically targeting summer births, Auger found that nearly 20,000 deliveries occurred in the week following a day when the mercury reached 32C or higher.

After adjusting for certain variables, including age of mother, birth order, and humidity during heat waves, Auger found that extreme heat did not seem to increase the number of preterm births. "We observed a only a negligible increase in the rate of preterm births between days when the temperature was below 20C and those when it was above 28C, from 5.4% to 5.8%," Auger explained. However, in women who reached 37 or 38 weeks of pregnancy, the risk of early-term delivery increased by 17% following a three-day episode of 32C or more, compared to days without a heat wave. When the extreme heat episode lasted from 4 to 7 days, the risk reached 27%.

Impact on early-term newborns?

According to Auger, the adverse effects of high temperatures on the elderly are well documented, but little research has dealt with the impact of heat on pregnant women. "Small-scale studies suggest that heat-induced stress increases uterine contractility, during a period of pregnancy when thermoregulation seems less effective," Auger said. "We also suspect that dehydratio
'/>"/>

Contact: William Raillant-Clark
w.raillant-clark@umontreal.ca
514-566-3813
University of Montreal
Source:Eurekalert

Page: 1 2

Related biology news :

1. Get used to heat waves: Extreme El Nino events to double
2. Brain waves encode information as time signals
3. WUSTL engineer using Jello to study waves in brain from traumatic impact
4. Breaking deep-sea waves reveal mechanism for global ocean mixing
5. Radio waves carry news of climate change
6. New study finds nighttime heat waves increasing in Pacific Northwest
7. Brain waves make waves
8. In-sync brain waves hold memory of objects just seen
9. Waves of Berkeley Lab responders deploy omics to track Deepwater Horizon cleanup microbes
10. Grazing snails rule the waves
11. Mafic melts, methane seeps, 2 million waves, foreign magma, and the invisible hand
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/26/2014)... sciences at New Jersey Institute of Technology (NJIT), is ... that sets the pace for daily life. , Evolution ... mammals with fundamental rhythms of life that include the ... with seasonal change. The brain,s circadian clock controls hormone ... when disrupted by experiences such as jet lag or ...
(Date:8/26/2014)... researchers at the University of Illinois at Urbana-Champaign ... design, paving the way for power-on-a-chip applications. ... microscopic scale that amplify light and produce ultra-narrowband ... of electrical and computer engineering (ECE) at Illinois. ... optical power on a chip containing both electronic ...
(Date:8/26/2014)... has recommended investing in dog owner education and facilities as ... obesity in both people and their pets. , In a ... that access to dog-friendly walking environments and better education about ... and take more exercise with their pets. , It is ... for a walk. In the UK, almost a quarter of ...
Breaking Biology News(10 mins):Researching fundamental rhythms of life 2Researching fundamental rhythms of life 3Symphony of nanoplasmonic and optical resonators produces laser-like light emission 2Education and dog-friendly neighbourhoods could tackle obesity 2
... by intestinal worms a condition that affects more than ... immune system is more versatile than has long been thought. ... exploration in the search for treatments against autoimmune diseases like ... tissues. The findings, reported by scientists who performed the ...
... Forest Service Southern Research Station (SRS) scientists and partners ... faster than expected in the southern Appalachians and rapidly ... and cooperators from the University of Georgia published the ... Ecosystems . "The study marks the ...
... has found that modern lifestyle habits may play a bigger ... A review of the scientific evidence over the ... good oral hygiene and health education, may override the effects ... online in a Supplement to the journal Obesity Reviews ...
Cached Biology News:A worm-and-mouse tale: B cells deserve more respect 2A worm-and-mouse tale: B cells deserve more respect 3Study finds hemlock trees dying rapidly, affecting forest carbon cycle 2
(Date:8/26/2014)... , Aug. 26, 2014  ViveBio, LLC a ... collection, stabilization and transportation, announced today that it ... Services, LLC (LPS) of Knoxville, Tennessee ... in the United States . ... of ambient temperature dried biological specimen transport systems.  ...
(Date:8/26/2014)... Scranton, PA (PRWEB) August 26, 2014 ... San Jose, CA, which specializes in chemical process equipment, ... with Michigan State University’s Facility for Rare Isotope Beams ... ft. long precision cleaning line made with Vycom’s Flametec ... resonators, which are the essential parts of FRIB’s linear ...
(Date:8/26/2014)... 2014  Guardant Health, a healthcare company focused ... products, has been recognized today by the World ... . As an innovator in non-invasive, tumor profiling, ... a wide variety of industries and regions to ... ® , Guardant Health,s first commercially available product, ...
(Date:8/26/2014)... 26, 2014 After searching for ... research facilities , the University of Kansas Medical ... have chosen iLab Solutions' web-based core facility management ... , "We are very pleased that the ... Center signed on with us,” stated Heather Lorenz, ...
Breaking Biology Technology:ViveBio and Laboratory Procurement Services Sign Agreement for Distribution of the ViveST Line of Products 2Modutek Selects Vycom’s Flametec Materials for Michigan State University’s Superconductor Equipment 2Modutek Selects Vycom’s Flametec Materials for Michigan State University’s Superconductor Equipment 3Guardant Health Named a 2015 Technology Pioneer by World Economic Forum 2The University of Kansas Medical Center and The University of Kansas Cancer Center Select iLab Solutions Web-based Software to Streamline Operations 2The University of Kansas Medical Center and The University of Kansas Cancer Center Select iLab Solutions Web-based Software to Streamline Operations 3
... 2008 DaVita Inc., a,leading provider of kidney care ... today announced its former Chief Medical,Officer (CMO) Charles J. ... stepped down as CMO in July 2007, and has ... CMO., (Logo: http://www.newscom.com/cgi-bin/prnh/20020729/DAVITALOGO ), "Charlie has ...
... Kees Bald has demonstrated that hydrogen can be efficiently ... more easily used in mobile applications. Bald discovered that ... make the favourable extraction and storage of hydrogen possible. ... storage and transport medium for energy. Therefore many future ...
... Genaera,Corporation (Nasdaq: GENR ) today announced its financial ... net loss for the year ended,December 31, 2007 was $15.7 ... a net loss of $21.2 million, or $(1.46) per share,basic ... net loss for,the quarter ended December 31, 2007 was $5.8 ...
Cached Biology Technology:DaVita Announces Retirement of Former Chief Medical Officer Charles J. McAllister, M.D. 2Genaera Corporation Announces 2007 Financial Results 2Genaera Corporation Announces 2007 Financial Results 3Genaera Corporation Announces 2007 Financial Results 4Genaera Corporation Announces 2007 Financial Results 5Genaera Corporation Announces 2007 Financial Results 6
streptavidin, Alexa Fluor® 750–allophycocyanin conjugate (Alexa Fluor® 750–allophycocyanin streptavidin) *1 mg/mL*...
AedestaTM Animal Organ/Tissue Perfusion Soln....
Reusble. Uses in conjunction with the Apoptotic Cell Isolation Kit....
EGTA, 10 g. Ethylene glycol-O,O-bis-[2-amino-ethyl]-N,N,N,N,-tetraacetic acid.Assay: > 99.0%. Category: Nucleotides & Enzymes & Biochemicals, Ultrapure Biochemicals ....
Biology Products: