scholarly journals Body temperature fluctuation analysis in cirrhosis

2017 ◽  
Vol 38 (2) ◽  
pp. 378-379 ◽  
Author(s):  
Ali R. Mani ◽  
Roham Mazloom ◽  
Zahra Haddadian ◽  
Sara Montagnese
Keyword(s):  
Body Temperature ◽  
Temperature Fluctuation ◽  
Fluctuation Analysis

scholarly journals Sulprostone-Induced Gastric Dysrhythmia in the Ferret: Conventional and Advanced Analytical Approaches

2021 ◽  
Vol 11 ◽  
Author(s):  
Zengbing Lu ◽  
Yu Zhou ◽  
Longlong Tu ◽  
Sze Wa Chan ◽  
Man P. Ngan ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Body Temperature ◽  
Core Body Temperature ◽  
Analytical Techniques ◽  
Dominant Frequency ◽  
Fluctuation Analysis ◽  
Prostaglandin E ◽  
Myoelectric Activity ◽  
Core Body ◽  
Analytical Approaches

Nausea and emesis resulting from disease or drug treatment may be associated with disrupted gastric myoelectric activity (GMA). Conventional analytical techniques can determine the relative degrees of brady-, normo-, and tachygastric power, but lose information relative to the basic slow wave shape. The aim of the present study was to investigate the application of advanced analytical techniques in the analysis of disrupted GMA recorded after administration of sulprostone, a prostaglandin E3/1 agonist, in ferrets. Ferrets were implanted with radiotelemetry devices to record GMA, blood pressure, heart rate (HR) and core body temperature 1 week before the administration of sulprostone (30 μg/kg) or vehicle (saline, 0.5 mL/kg). GMA was initially analyzed using fast Fourier transformations (FFTs) and a conventional power partitioning. Detrended fluctuation analysis (DFA) was also applied to the GMA recordings to reveal information relative to the fluctuation of signals around local trends. Sample entropy (SampEn) analysis was used for examining the regularity of signals. Conventional signal processing techniques revealed that sulprostone increased the dominant frequency (DF) of slow waves, with an increase in the percentage power of the tachygastric range and a decrease in the percentage power of the normogastric range. DFA revealed that sulprostone decreased the fluctuation function, indicative of a loss of the variability of GMA fluctuations around local trends. Sulprostone increased SampEn values, indicating a loss of regularity in the GMA data. Behaviorally, sulprostone induced emesis and caused defecation. It also increased blood pressure and elevated HR, with an associated decrease in HR variability (HRV). Further analysis of HRV revealed a decrease in both low-frequency (LF) and high-frequency (HF) components, with an overall increase in the LF/HF ratio. Sulprostone did not affect core body temperature. In conclusion, DFA and SampEn permit a detailed analysis of GMA, which is necessary to understand the action of sulprostone to modulate gastric function. The action to decrease HRV and increase the LF/HF ratio may be consistent with a shift toward sympathetic nervous system dominance, commonly seen during nausea.

Oxygen isotope variability in juvenile dinosaurs (Hypacrosaurus): evidence for thermoregulation

Paleobiology ◽  
1995 ◽  
Vol 21 (4) ◽  
pp. 552-560 ◽  
Author(s):  
Reese E. Barrick ◽  
William J. Showers
Keyword(s):  
Body Temperature ◽  
Oxygen Isotope ◽  
Oxygen Isotopes ◽  
Early Phase ◽  
Temperature Fluctuation ◽  
Body Fluid ◽  
Bone Growth ◽  
Terrestrial Vertebrates ◽  
Isotopic Heterogeneity ◽  
Bone Phosphate

Small terrestrial vertebrates are not capable of maintaining a constant body temperature (±2°C) without a relatively high metabolism. The amount of temperature variability during bone growth can be determined using oxygen isotopes from bone phosphate because fractionation of oxygen isotopes between body fluid and bone phosphate is dependent upon temperature. Fluctuation of body temperature during the early phase of growth in juvenile ectotherms should result in high intra- and interbone isotopic variability, whereas juvenile endotherms should have low isotopic variability resulting from the maintenance of homeothermy. Analyses of juvenile Hypacrosaurus individuals indicate a pattern of low isotopic heterogeneity suggestive of endothermy.

scholarly journals A DFB-LD Internal Temperature Fluctuation Analysis in a TDLAS System for Gas Detection

2019 ◽  
Vol 11 (3) ◽  
pp. 1-8 ◽  
Author(s):  
Yulei Xie ◽  
Jun Chang ◽  
Xiaohan Chen ◽  
Jiachen Sun ◽  
Qinduan Zhang ◽  
...  
Keyword(s):  
Temperature Fluctuation ◽  
Gas Detection ◽  
Fluctuation Analysis ◽  
Internal Temperature

Body Temperature Fluctuation After Ovariohysterectomy in Dogs in Luteal Phase, Inactive Phase and Pyometra: A Clinical Study of 77 Cases

2020 ◽  
Vol 40 ◽  
pp. 100440
Author(s):  
Georgia Karnezi ◽  
Emmanouil Tzimtzimis ◽  
Vasileios Rafailidis ◽  
Charalampos Kostakis ◽  
Ioannis Savvas ◽  
...  
Keyword(s):  
Clinical Study ◽  
Body Temperature ◽  
Temperature Fluctuation ◽  
Luteal Phase ◽  
Inactive Phase

The Hibernation Continuum: Physiological and Molecular Aspects of Metabolic Plasticity in Mammals

Physiology ◽  
2015 ◽  
Vol 30 (4) ◽  
pp. 273-281 ◽  
Author(s):  
Frank van Breukelen ◽  
Sandra L. Martin
Keyword(s):  
Phenotypic Plasticity ◽  
Body Temperature ◽  
Temperature Fluctuation ◽  
Metabolic Flexibility ◽  
Metabolic Depression ◽  
Metabolic Plasticity ◽  
Internal Milieu ◽  
The Face ◽  
Molecular Aspects ◽  
Physiological And Biochemical

Mammals are often considered to be masters of homeostasis, with the ability to maintain a constant internal milieu, despite marked changes in the environment; however, many species exhibit striking physiological and biochemical plasticity in the face of environmental fluctuations. Here, we review metabolic depression and body temperature fluctuation in mammals, with a focus on the extreme example of hibernation in small-bodied eutherian species. Careful exploitation of the phenotypic plasticity of mammals with metabolic flexibility may provide the key to unlocking the molecular secrets of orchestrating and surviving reversible metabolic depression in less plastic species, including humans.

Sign in / Sign up

Export Citation Format

Share Document