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Biomedical subjects

R E Wells

Publications and source records attributed to R E Wells.

At least 19 recordsLinked to original sources
PubMed1986

Serum biochemistry of healthy Yucatan miniature pigs.

Sera collected from 24 (12 boars and 12 gilts) healthy, fasted 28-43 week-old Yucatan miniature pigs were analyzed for 21 clinical chemistry parameters. The mean, standard deviation, median, and observed range for each parameter are presented as reference values for the normal blood chemistry for this breed. Comparison with published values reveals that the Yucatan miniature pig has a blood chemistry profile comparable to that of domestic pigs and other breeds of miniature swine.

Animals↗
PubMed1983

Giant cell tumor of soft parts in six horses.

Giant cell tumor of soft parts was diagnosed in 6 horses 3 to 12 years old (mean, 6.8 +/- 3.5 years): 3 Quarter Horse geldings, 2 Standardbred mares, and 1 Standardbred stallion. The neoplasms developed as raised, solitary masses, approximately 1 to 4 cm in diameter, which were firmly attached to subcutaneous tissue of the neck (1 horse), shoulder (1 horse), thigh (2 horses), or stifle (2 horses). Excision was followed by local recurrence in 3 horses within 1 to 1 1/2 months. The neoplasms were firm and cut with resistance. On cut surface, they were white, with mottled red hemorrhagic areas.

Animals↗
PubMed1982

Acute toxicosis of budgerigars (Melopsittacus undulatus) caused by pyrolysis products from heated polytetrafluoroethylene: clinical study.

Polytetrafluoroethylene (PTFE), a synthetic polymer widely used as a nonstick surface in cookware, releases toxic pyrolysis products when exposed to excessive heat. Thirty-two budgerigars (Melopsittacus undulatus) were exposed to pyrolysis products of either heated PTFE cookware or plain aluminum cookware in a specially designed exposure chamber for given periods. Clinical signs were recorded and necropsies were done on all birds at the termination of each exposure period. The PTFE products caused acute respiratory distress and rapid death in many of the exposed birds. At necropsy, lesions were seen only in the respiratory tract--extensive pulmonary hemorrhage and congestion.

Acute Disease↗
PubMed1982

Acute toxicosis of budgerigars (Melopsittacus undulatus) caused by pyrolysis products from heated polytetrafluoroethylene: microscopic study.

An ultrastructural study was performed on the respiratory system of budgerigars (including 6 controls) which were acutely affected by inhalation of toxic fumes from heated polytetrafluoroethylene (PTFE pyrolysis products) or had survived fro 24 hours after a sublethal exposure. The controls were exposed to fumes from heated plan aluminum (ie, not coated with PTFE). The microanatomy of lungs of the controls was described and compared with that of lungs of the birds exposed to PTFE pyrolysates. The PTFE pyrolysates caused extensive, severe necrotizing and hemorrhagic pneumonitis. These lesions were associated with amorphous elongate conglomerates of particles which were similar to those isolated on membrane filters from fumes generated from heated PTFE--this supporting the hypothesis that the toxic principle in PTFE pyrolysates is at least, in part, related to generated particulates.

Acute Disease↗
PubMed1981

Continuity in change.

Explore the source record for details and available documents.

Education, Medical, Graduate↗
PubMed1975

Injuries of the cervical spine in football.

The neck is a vulnerable area in contact sports in general and in football in particular. The type of injuries encountered often vary with the age and development of the players. Five well-established mechanisms of injury have been identified. Most injuries appear to occur during the act of tackling when the well protected head sustains violent trauma which is transferred directly to the neck. The most dangerous single mechanism is that of flexion, but lateral deviation, extension and impaction also have been identified as mechanisms of injury. The pattern of injuries would suggest that several measures should be undertaken. First, coaches, officials and doctors associated with football teams need to be aware of the dangers of head-on tackling and the value of "heads-up" football to avoid flexion injuries. Deliberately butting players with the head or "spearing" is illegal but head-on tackling and blocking of the so-called "stick-blocking" type is specifically taught at the high school and college levels. In the immature neck this is a dangerous maneuver and should be discouraged. The development of strong neck musculature could reasonably be expected to prevent many neck injuries and isometric and resistance exercises to develop neck strength should be a part of all preseason conditioning. All players who have neck symptoms should be thoroughly evaluated both clinically and radiologically to rule out damage or predisposing structural weakness. This is particularly important in the atlanto-axial area in immature players. Finally, it is recommended that protective collars be worn by all players with a history of neck injury. The authors have gained the impression in surveying a large number of injuries that most serious neck injuries, particularly those involving fracture-dislocation are incurred in the act of open field tackling by defensive players making head-on tackles. Neck flexion is the usual mechanism. A light-weight sponge rubber collar is presently available. It is designed to be used to prevent extension and lateral flexion but it can be easily modified to extend anteriorly where it should aid in preventing the extreme flexion which is responsible for many serious injuries in the young players at the high school level.

Adolescent↗
PubMed1966

Blood flow in the microvasculature of the conjunctiva of man.

Cinephotomicrography of capillary blood flow in conjunctival vessels of man were carried out at 116 pictures per second. Red cells did not move in streamlines but rather in a heterogenous mixing type of flow. Flow in vessels of patients whose red cells were grossly aggregated was very slow and often stagnant.

Blood Circulation↗