Oxygen Consumption, Body Temperature and Heart Rate of Woodchucks Entering Hibernation

1958 ◽  
Vol 194 (1) ◽  
pp. 83-91 ◽  
Author(s):  
Charles P. Lyman
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Body Temperature ◽  
Blocking Agent ◽  
The Body ◽  
Sodium Pentobarbital ◽  
Temperature Dependent ◽  
Anterior Portion ◽  
Total Period ◽  
Ganglionic Blocking

Oxygen consumption, heart rate and temperatures from various parts of the body were measured in woodchucks ( Marmota monax) entering hibernation. Comparisons were made with the chilling of woodchucks anesthetized with sodium pentobarbital, with and without the ganglionic blocking agent bis(trimethylammonium)hexane dibromide. Heart rate and oxygen consumption began to decline before any drop in body temperature as animals entered hibernation. The process was usually not continuous, for periodically the heart speeded, oxygen consumption and muscle action potentials increased and, shortly thereafter, the temperature rose transiently with the anterior portion of the body warming faster than the posterior. These partial rewarmings were less and less frequent as the total period of hibernation became longer. As hibernators chilled, the heart was the warmest area, with the thorax warmer than the abdomen. Dead woodchucks curled in the hibernating position chilled faster than the hibernators with the central portion of the abdomen chilling the slowest. In the supine, anesthetized animal, with or without the ganglionic blocking agent, the flow of blood altered the chilling so that the area near the heart remained slightly warmer than the abdomen. If curled in the hibernating position, the heart region remained much warmer than the abdomen because blood flow was curtailed by the restricted position. Chilling of the hibernator was identical to the curled, anesthetized animal except that the thoracic region of the former remained warmer due to periodic rewarmings, and also shivering in this well-muscled area. It is concluded that entrance into hibernation is not strictly temperature-dependent and that the animal is vasodilated during this process.

Effects of pentobarbital on temperature and heart rate of rats subjected to cold

1962 ◽  
Vol 203 (4) ◽  
pp. 758-761 ◽  
Author(s):  
C. L. Gemmill ◽  
K. M. Browning
Keyword(s):  
Heart Rate ◽  
Body Temperature ◽  
Standard Dose ◽  
The Body ◽  
Sodium Pentobarbital ◽  
Previous Exposure ◽  
Exposure To Cold ◽  
Before And After

A study at 5 C was made of body temperature and heart rate after a standard dose of sodium pentobarbital in normal, thyroidectomized, and hypermetabolic rats before and after subjection to 5 C for 46 hr. It was found that after subjection to cold in the normal rats, the body temperature and heart rate in some animals had more ability to recover after the barbiturate than in rats without previous exposure to cold. There was no ability to recover in the thyroidectomized animals either before or after subjection to cold. Most of the normal and thyroidectomized rats either with or without previous exposure to cold given sodium 3,3',5-l-triiodothyronine (T-3) had recoveries after the barbiturate. Some rats given T-3 and subjected to cold had a primary fall in temperature and heart rate that was followed by recovery and then a secondary fall.

scholarly journals IDENTIFYING THE MENTAL STATUS OF BEDRIDDEN ELDERLY BY THE BODY TEMPERATURE, HEART RATE, AND SKIN CONDUCTIVITY USING AN ARDUINO SENSOR MODULE

2021 ◽  
Vol 5 (12) ◽  
Author(s):  
W.B.P.N. Herath ◽  
R.A.K.I. Ranasinghe ◽  
M.P.C. Sandaru ◽  
I.A.S. Lakmali ◽  
A.G.N.K. Aluthgama ◽  
...  
Keyword(s):  
Heart Rate ◽  
Body Temperature ◽  
Galvanic Skin Response ◽  
Emotional State ◽  
The Body ◽  
Blood Capillary ◽  
Sensor Module ◽  
Skin Response ◽  
Skin Conductivity ◽  
The Relationship

Addressing the emotional and mental health of the bedridden elderly is necessary as they are more likely to be depressed being isolated and dependent on a caregiver for a prolonged time. Several studies have been carried out to identify the mental stress of patients through their skin conductivity. The variations in the sympathetic nervous system reflect the emotional state of a person. This is demonstrated by the Galvanic Skin Response and thus can be used as a denotation of psychological or physiological arousal. Such arousal causes the blood capillary dilation, increment of sweat gland activities making the skin further conductive to electricity. In this study we develop a sensor module composed of a Galvanic Skin Response sensor for the bed ridden elderly and identify the relationship between body temperature, heart rate and GSR of them. The experiment is conducted upon 10 bed ridden elderly aged from 60 – 80 years of the Mihinthale region. The observations demonstrate a correlation between the heart rate, body temperature, skin conductivity and the human physiological states.

scholarly journals Measurement of Heart Rate, and Body Temperature Based on Android Platform

2020 ◽  
Vol 2 (1) ◽  
pp. 26-33
Author(s):  
Musyahadah Arum Pertiwi ◽  
I Dewa Gede Hari Wisana ◽  
Triwiyanto Triwiyanto ◽  
Sasivimon Sukaphat
Keyword(s):  
Heart Rate ◽  
Body Temperature ◽  
Temperature Sensor ◽  
Liquid Crystal Display ◽  
Vital Signs ◽  
Health Condition ◽  
The Body ◽  
Digital Data ◽  
Mental Condition ◽  
Measurement Results

Heart rate and body temperature can be used to determine the vital signs of humans. Heart rate and body temperature are two important parameters used by paramedics to determine the physical health condition and mental condition of a person. Because if your heart rate or body temperature is not normal then you need to make further efforts to avoid things that are not desirable. The purpose of this study is to design a heart rate and body temperature. In this study, the heart rate is detected using a finger sensor which placed on the finger. This sensor detects the heart rate pulses through infrared absorption of blood hemoglobin, and measure the body temperature using a DS18B20 temperature sensor which is placed axially. DS18B20 sensor works by converting temperature into digital data. The measurement results will be displayed on liquid crystal display (LCD) 2 x 16 and the data will be sent to android mobile phone via Bluetooth.  After the comparision beetwen the desain and the standart, the error is 0.46% for beats per minutes (BPM) parameters and 0.31 degrees Celsius for temperature parameters.

A Patch-Type Flexible Physiological Monitor on a Non-Woven Material

2006 ◽  
Vol 969 ◽  
Author(s):  
Wen-Yang Chang ◽  
Jin-Sheng Chang ◽  
Chun-Hsun Chu ◽  
Tzong-Che Ho ◽  
Yu-Cheng Lin
Keyword(s):  
Heart Rate ◽  
Body Temperature ◽  
The Body ◽  
Hot Press ◽  
Postural Change ◽  
Good Adhesion ◽  
Patch Type ◽  
Speed Up ◽  
Trace Line ◽  
Hot Press Process

AbstractThe study reported is about an integrated wireless physiological monitor module of the flexible patch type, used on a non-woven material to package this module by a hot press process. The module can monitor the body temperature and heart rate. Experimental results showed that the specification and accuracy should be 25-40 °C ± 0.5 °C and 50-200 bpm ± 2 bpm. The main advantage of the module is that the postural change can be monitored. At the same time, it has also a good adhesion between substrate and components, without crack of conductor trace line after bending the module repeatedly. Thickness is about 2 mm. The aim of this study is to speed up the physiological technology and to create more efficiency by miniaturization. In addition, the acceptance level of wearing it is increased by the small and ergonomic design.

Body Temperature, Oxygen Consumption, and Heart Rate in Three Species of Australian Flying Foxes

1964 ◽  
Vol 37 (2) ◽  
pp. 179-198 ◽  
Author(s):  
George A. Bartholomew ◽  
Philip Leitner ◽  
John E. Nelson
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Body Temperature ◽  
Flying Foxes

The metabolic rate and thermal conductance of the eastern barred bandicoot (Perameles gunnii) at different ambient temperatures

2003 ◽  
Vol 51 (6) ◽  
pp. 603 ◽  
Author(s):  
M. P. Ikonomopoulou ◽  
R. W. Rose
Keyword(s):  
Oxygen Consumption ◽  
Body Temperature ◽  
Metabolic Rate ◽  
Thermal Conductance ◽  
The Body ◽  
High Metabolic Rate ◽  
Ambient Temperatures ◽  
Reduced Body ◽  
Thermoneutral Zone ◽  
Reproductive Females

We investigated the metabolic rate, thermoneutral zone and thermal conductance of the eastern barred bandicoot in Tasmania. Five adult eastern barred bandicoots (two males, three non-reproductive females) were tested at temperatures of 3, 10, 15, 20, 25, 30, 35 and 40°C. The thermoneutral zone was calculated from oxygen consumption and body temperature, measured during the daytime: their normal resting phase. It was found that the thermoneutral zone lies between 25°C and 30°C, with a minimum metabolic rate of 0.51 mL g–1 h–1 and body temperature of 35.8°C. At cooler ambient temperatures (3–20°C) the body temperature decreased to approximately 34.0°C while the metabolic rate increased from 0.7 to 1.3 mL g–1�h–1. At high temperatures (35°C and 40°C) both body temperature (36.9–38.7°C) and metabolic rate (1.0–1.5 mL g–1 h–1) rose. Thermal conductance was low below an ambient temperature of 30°C but increased significantly at higher temperatures. The low thermal conductance (due, in part, to good insulation, a reduced body temperature at lower ambient temperatures, combined with a relatively high metabolic rate) suggests that this species is well adapted to cooler environments but it could not thermoregulate easily at temperatures above 30°C.

Experimental hyperthyroidism in dogs and effect of salivariectomy

1961 ◽  
Vol 201 (4) ◽  
pp. 723-728 ◽  
Author(s):  
Dorothy A. Piatnek ◽  
Robert E. Olson
Keyword(s):  
Heart Rate ◽  
Body Weight ◽  
Oxygen Consumption ◽  
Thyroid Hormone ◽  
Body Temperature ◽  
Caloric Intake ◽  
Clinical Signs ◽  
Turnover Rates ◽  
Laboratory Findings ◽  
Thyroid State

A hyperthyroid state was induced and maintained in 17 dogs for 2–10 months by the administration of massive amounts of thyroid hormone. The great tolerance of this species to such large doses was striking. The clinical signs characteristic of hyperthyroidism in other mammals were observed including significantly increased caloric intake, oxygen consumption, heart rate, and body temperature. The laboratory findings included polycythemia, markedly increased levels of protein-bound iodide (PBI), increased turnover rates of l-thyroxine, and a decreased urinary excretion of inorganic iodide. Unlike other species the hyperthyroid dogs did not demonstrate marked reductions in body weight or serum cholesterol. Salivariectomy neither hastened nor enhanced the onset of exogenous hyperthyroidism in the dog. Measurements of the rate of disappearance of I131 l-thyroxine from the plasma and the rate of appearance of radioactive iodide in the urine indicated that the salivary glands in the intact dog are effective sites of deiodination and iodide excretion. This activity, however, is not the sole regulator of the level of circulating thyroid hormone and thus of the thyroid state.

Effects of ganglionic blockade by hexamethonium on blood pressure responses to histamine

1960 ◽  
Vol 199 (5) ◽  
pp. 745-747 ◽  
Author(s):  
James G. Hilton
Keyword(s):  
Blood Pressure ◽  
Nervous Activity ◽  
Blocking Agent ◽  
Sodium Pentobarbital ◽  
Autonomic Nervous Activity ◽  
Control Blood Pressure ◽  
Acid Phosphate ◽  
Before And After ◽  
Blood Pressure Responses ◽  
Ganglionic Blocking

The effects of blockade of the autonomic ganglia by administration of hexamethonium on blood pressure responses to histamine were studied in the dog anesthetized with sodium pentobarbital. A series of graded doses of histamine acid phosphate were administered before and after the blockade of the ganglia, and blood pressure responses elicited by these doses of histamine were analyzed for minimum attained blood pressure and actual fall and duration of fall in blood pressure. In all cases the minimum attained blood pressure was lower after administration of the ganglionic blocking agent than before. The amount of lowering of the minimum attainable blood pressure was about the same as that of lowering of the control blood pressure produced by the ganglionic blocking agent. Actual fall in blood pressure was unaffected by administration of the ganglionic blocking agent but duration of the fall following all the larger doses of histamine was markedly prolonged by this same procedure. Prolongation of depressor response and lowering of minimum attained blood pressure seem to be more related to the presence or absence of autonomic nervous activity than to the level of control blood pressure.

Body Composition (% Fat) and Heat Stress of Well Conditioned Young Adult Males

1982 ◽  
Vol 26 (6) ◽  
pp. 561-564
Author(s):  
Michael W. Riley ◽  
David J. Cochran ◽  
Arthur J. Soundy
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Young Adult ◽  
Skin Temperature ◽  
Body Fat ◽  
Bicycle Ergometer ◽  
The Body ◽  
Lean Body Weight ◽  
Adult Males ◽  
Young Adult Males

The physiological responses of heart rate, oxygen consumption, sweat loss, rectal temperature and mean skin temperature were monitored as eight well-conditioned young adult males were exposed to effective temperatures of 70°F, 80°F and 90°F. The body fat contents of the subjects ranged from 11.3% to 34%. The subjects pedalled a 300 kilopond meters/minute load on a bicycle ergometer for 25 minutes. Results indicate that body fat or the percent of body fat squared have a statistically significant effect on the dependent variables of oxygen consumption/lean body weight, change in heart rate, core-skin temperature gradient, and oxygen consumption/maximum oxygen consumption.

Heart rate and body temperature during free diving of Weddell seals

1987 ◽  
Vol 253 (2) ◽  
pp. R344-R351 ◽  
Author(s):  
R. D. Hill ◽  
R. C. Schneider ◽  
G. C. Liggins ◽  
A. H. Schuette ◽  
R. L. Elliott ◽  
...  
Keyword(s):  
Heart Rate ◽  
Body Temperature ◽  
Adult Male ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Weddell Seal ◽  
The Body ◽  
Weddell Seals ◽  
The Mean ◽  
Slow Onset

We have developed and successfully used the first microprocessor-controlled monitors for collection of data on depth, heart rate, and body temperature of one fetal and five adult male freely swimming Weddell seals. Adult seals almost invariably experienced a prompt bradycardia at the start of each dive, and the mean heart rate during diving was significantly lower for dives greater than 20 min (P greater than 0.999). The heart rate was also significantly greater during the ascent portion of dives when compared with the descent portion (P greater than 0.95). The fetal seal experienced a slow onset of bradycardia when its mother dived; during diving the fetal heart rate decreased by an average of 1.1 beats/min for each minute of the dive. The fetal heart rate generally took approximately 10 min to recover to predive levels after its mother resurfaced to breathe. The body temperature of one adult male Weddell seal showed a decrease of greater than 1.5 degrees C from resting levels before dives of greater than 15 min were initiated and a drop of over 2 degrees C before dives of greater than 30 min duration.

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