rectal temperature

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rectal temperature

Etymology: L, rectus, straight, temperatura
body temperature as measured by a clinical thermometer placed in the rectum. Rectal temperatures average 0.5° F to 0.75° F (0.3° C to 0.4° C) higher than oral temperatures.

rectal temperature

The temperature obtained by inserting a thermometer into the anal canal to a depth of at least 112 in (3.8 cm) and holding it in place for 3 to 5 min or, for electronic thermometers, according to the manufacturer's directions. This method should not be used following a rectal operation or if the rectum is diseased. A rectal temperature is more accurate than either oral or axillary temperatures. It averages about 1°F (0.56°C) higher than the oral temperature and approx. 1.5°F (0.84°C) higher than the axillary temperature.
See: Temperature :Rectal
See also: temperature


pertaining to the rectum.

rectal examination
digital (in small animals) or manual examination of the visceral contents of the posterior abdomen for the purposes of diagnosis, in cattle and horses especially of pregnancy. See also rectum, proctoscopy.
rectal fistula
see rectovaginal fistula.
rectal impaction
see fecal impaction.
rectal inflammation
rectal massage
massage of the accessory sex glands, a method of semen collection in dogs.
rectal paralysis
occurs especially in cows and mares in late pregnancy. No feces are passed and the rectum is distended with feces, and there is no peristalsis during their manual removal. Dogs may show posterior paresis.
rectal polyp
see colorectal polyp.
rectal probe
used in pregnancy diagnosis in ewes and in electroejaculation.
rectal rupture
the wall is perforated into the peritoneal cavity. Death occurs quickly as a result of endotoxic shock because of the absorption of enteric toxins through the peritoneum.
rectal stricture
stenosis of the rectum occurs in dogs, presumably resulting from trauma and anorectal disease, and in pigs following local ulceration caused by infection with Salmonella spp. Abnormal abdominal distention, small diameter feces and straining result.
rectal tear
most common in mares in association with manual rectal examinations. The mucosa is damaged but the wall is not ruptured. Leads to perirectal abscessation and subsequent peritonitis.
rectal temperature
see rectal temperature.


the degree of sensible heat or cold, expressed in terms of a specific scale. See also hypothermia, hyperthermia.

absolute temperature
that reckoned from absolute zero (−459.67°F or −273.15°C).
air temperature
the temperature of the surrounding air as measured by a dry-bulb thermometer.
ambient temperature
temperature of the immediate environment.
body temperature
a prime technique for assessing health status of a patient. Always a rectal temperature. Average temperatures above which hyperthermia, pyrexia or fever can be said to occur are listed under pyrexia.
critical temperature
1. that below which a gas may be converted to a liquid by pressure.
2. the environmental temperature at which the body is unable to maintain a constant body temperature and at which heat production must be increased (cold temperatures) or at which heat loss must be increased (high temperatures).
effective temperature
the combination of air temperature, humidity and wind speed. See also temperateness index.
environmental temperature
air temperature.
nonpermissive temperature
one at which a conditional gene mutation is nonfunctional. See also temperature-sensitive mutation.
normal body temperature
that usually registered by a healthy animal. See pyrexia.
permissive temperature
one at which a conditional gene mutation can express its normal function. See also temperature-sensitive mutation.
premortal temperature fall
the sudden fall in body temperature of a previously fevered animal just before death.
rectal temperature
the body temperature as measured by a rectal thermometer which has been in situ and in contact with the mucosa of the rectum with the anal sphincter tightly closed for at least 30 seconds. Alternative equipment is a dipolar electrode in a rectal probe.
temperature stress
exposure to excessively high or low environmental temperature.
windchill temperature
a combination of wind velocity and air temperature. See also effective temperature (above).
References in periodicals archive ?
Although the rectal temperature seemed to increase as the THI increased, the RT of Sahiwal, HF and crossbreds were not different.
berghei infected mice showed that within 6 h (morning compared with evening), their rectal temperature fluctuated by 3[degrees]F in the control group, D1 through D6 which was a significant manifestation (p [less than or equal to] 0.
Working in an environmentally controlled, low-oxygen chamber that simulates up to 15,000 ft altitude and 10[degrees]F, the VCO and Animal Care Specialist on this project don extreme cold weather gear and oxygen masks to monitor physiological parameters such as core and rectal temperature changes in Iditarod-proven Alaskan husky sled dogs running on a treadmill.
Similarly, artificial heating of dogs to a rectal temperature of 41.
In each environment, the animals' heart rate, respiration rate, and rectal temperature were measured twice daily (8:30, 16:00).
The diagnosis of a heat-related injury is based largely upon the history of the patient, clinical signs on presentation, and potentially the patient's rectal temperature.
An anxiolytic, diazepam, decreased locomotor activity, rectal temperature and enhanced sleep elicited by thiopental, similar to neferine.
Multiple regression analysis showed that HR rise and blood volume decline were predictors of SV drop whereas heart rate increase was explained by rectal temperature and magnitude of muscle mass activation, as indicated by iEMG (p < 0.
Hospital records made available to us indicate that Peters might not have suffered from exertional heatstroke, which classically produces a rectal temperature >42[degrees]C, cerebral effects and, usually, a fatal outcome without vigorous active cooling.
All 12 studies that compared rectal temperature with brain temperature found brain temperature to be higher with mean differences of 0.
and reported to the triage nurse that the infant had been feeding poorly since midnight of the previous day and that she had a rectal temperature of 100.
Givoni and Goldman (1972, 1973a) developed two separate empirical models for predicting rectal temperature and heart rate response for a wide range of work rates, clothing levels, and environmental conditions.