Objective: To compare the efficacy of forced-air warmers and radiant heaters on rewarming after cardiac surgery in a prospective randomized study.
Methods: Fifty male patients who had undergone coronary artery bypass graft surgery were studied. The control group (Gr. C, n=10) was nursed under a standard hospital blanket. Two groups were treated with forced-air warmers: WarmTouch 5700 (Gr. WT, n=10) and Bair Hugger 500 (Gr. BH, n=10). Two other groups were treated by radiant heaters: the Aragona Thermal Ceilings CTC X radiant heater (Gr. TC, n=10) and a self assembled radiant heater of 4 Hydrosun 500 infrared lamps (Gr. HY, n=10). Changes of oesophageal temperature, mean skin temperature, mean body temperature and relative heat balance were calculated from oesophageal temperature, 4 skin temperatures and oxygen consumption (VO(2)).
Results: All actively treated groups with exception of the TC group showed significantly faster oesophageal warming than the control group. The mean body temperature increased 1.1 (0.7-1.7) degrees Ch(-1) in Gr. WT, 1.3 (0.7-1.5) degrees Ch(-1) in Gr. BH, 0.8 (0.5-1.4) degrees Ch(-1) in Gr. TC and 0.7 (0.4-1.0) degrees Ch(-1) in Gr. HY compared to Gr. C with 0.4 (0.2-0.7) degrees Ch(-1). The mean VO(2) and the maxima of the VO(2) during the study period did not differ significantly between the groups.
Conclusion: In the current setting active warming, forced-air warming more than radiant warming, increased speed of rewarming two- to threefold in comparison to insulation with a blanket.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Longitudinal Analysis of Humoral and Cellular Immune Response up to 6 Months after SARS-CoV-2 BA.5/BF.7/XBB Breakthrough Infection and BA.5/BF.7-XBB Reinfection.
Vaccines (Basel)
April 2024
Department of Infectious Diseases, Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing 210023, China.
The rapid mutation of SARS-CoV-2 has led to multiple rounds of large-scale breakthrough infection and reinfection worldwide. However, the dynamic changes of humoral and cellular immunity responses to several subvariants after infection remain unclear. In our study, a 6-month longitudinal immune response evaluation was conducted on 118 sera and 50 PBMC samples from 49 healthy individuals who experienced BA.
View Article and Find Full Text PDFCompletely Methylene-Free Side Chain Enables Significant Microphase Separation at Medium IECs for Fuel-Cell Anion Exchange Membranes.
ACS Appl Mater Interfaces
May 2024
State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
The introduction of hydrophobic side chain structures in anion exchange membranes (AEMs) to facilitate ion transport has been widely studied; however, low or moderate hydrophobic hydrocarbon and semifluorinated side chains are insufficient to induce a high degree of microphase separation. Herein, we design and prepare poly(aryl piperidinium) AEMs with completely methylene-free perfluorinated side chains, which can maximize the thermodynamic incompatibility between main- and side chains, thus enhancing microphase separation at medium ion exchange capacities (IECs). According to the molecular dynamics study, the methylene-free perfluorinated side chain leads to better hydration of cations.
View Article and Find Full Text PDFCongenital adrenal hyperplasia due to two rare CYP21A2 variant alleles, including a novel attenuated CYP21A1P/CYP21A2 chimera.
Mol Genet Genomic Med
July 2023
National Institutes of Health Clinical Center, Bethesda, Maryland, USA.
Background: Congenital adrenal hyperplasia (CAH) due to 21-hydroxylase (21OH) deficiency is an autosomal recessive inborn error of cortisol biosynthesis, with varying degrees of aldosterone production. There is a continuum of phenotypes which generally correlate with genotype and the expected residual 21OH activity of the less severely impaired allele. CYP21A1P/CYP21A2 chimeric genes caused by recombination between CYP21A2 and its highly homologous CYP21A1P pseudogene are common in CAH and typically associated with salt-wasting CAH, the most severe form.
View Article and Find Full Text PDFEffective regulation of the electronic properties of a biphenylene network by hydrogenation and halogenation.
RSC Adv
July 2022
Department of Optical Engineering, College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University Hangzhou Zhejiang 311300 P. R. China
A biphenylene network, the first synthesized non-graphene planar carbon allotrope composed entirely of sp-hybridized carbon atoms, has attracted widespread interest due to its unique structure, and electronic and mechanical properties. A pristine biphenylene network is metallic, and the effective regulation of its electronic properties will greatly expand its application in the fields of optoelectronics, nanoelectronic devices and photocatalysis. In this paper, the hydrogenation and halogenation of biphenylene networks were investigated using density functional theory, and their electronic properties were tuned by varying the functionalization concentration.
View Article and Find Full Text PDFMandibular Movements are a Reliable Noninvasive Alternative to Esophageal Pressure for Measuring Respiratory Effort in Patients with Sleep Apnea Syndrome.
Nat Sci Sleep
April 2022
Sleep Laboratory, CHU Université Catholique de Louvain (UCL) Namur Site Sainte-Elisabeth, Namur, Belgium.
Purpose: Differentiation between obstructive and central apneas and hypopneas requires quantitative measurement of respiratory effort (RE) using esophageal pressure (PES), which is rarely implemented. This study investigated whether the sleep mandibular movements (MM) signal recorded with a tri-axial gyroscopic chin sensor (Sunrise, Namur, Belgium) is a reliable surrogate of PES in patients with suspected obstructive sleep apnea (OSA).
Patients And Methods: In-laboratory polysomnography (PSG) with PES and concurrent MM monitoring was performed.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!