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Biomedical subjects

G Purcell

Publications and source records attributed to G Purcell.

10 recordsLinked to original sources
PubMed1993

Optoelectronic evaluation of trunk deformity in scoliosis.

In this study, truncal deformity in patients with scoliosis was evaluated by circumferential scanning using an optoelectronic device (Optronic Torsograph, Anima Corp., Tokyo, Japan). This device generates cross-sectional skin surface topography at 10 axial levels to provide a three-dimensional representation of truncal shape. Ninety-three patients with suspected idiopathic scoliosis were evaluated with conventional Cobb measurements, and their parameters were computed using the device's measurements. The geometric cross-sectional indexes correlated poorly with the Cobb angle and were highly variable during repeated measurements. The optoelectronic device's angle, a measure of centroid curvature, correlated highly with the Cobb angle for primary spinal curves. The highest correlation was observed in thoracolumbar curves. This optoelectronic device has clinical relevance as a method for further scoliosis screening and monitoring the progression of spinal curvature in a patient.

Adolescent↗
PubMed1985

Competition and cost in graduate medical education. Should we train unsalaried residents and fellows?

In 1985, a total of 6,080 applicants to the National Resident Matching Program (Match) were unable to match with residency positions. The majority of unmatched applicants were graduates of foreign medical schools. In addition, many US and foreign medical graduate applicants did not find positions in their preferred choice of specialties. As a result, teaching hospitals are increasingly receiving offers from would-be residents who are willing to work without financial support to gain the experience and credentials required for medical licensure. Teaching hospitals that consider accepting unsalaried house staff must begin to develop policies and guidelines that ensure fair and equitable treatment of all residents and fellows and that standards of quality are not compromised.

Costs and Cost Analysis↗
PubMed1982

Midazolam as an intravenous induction agent for general anaesthesia: a clinical trial.

The peripheral and central nervous, cardiovascular and respiratory effects of midazolam 0.15 mg/kg, administered intravenously, were studied in 57 patients. Midazolam induced anaesthesia satisfactorily in 78% of the patients, the remainder required either further doses of midazolam, or alternative induction agents. There was no pain on injection. No evidence of thrombophlebitis was apparent up to 72 hours after injection. Mean systolic arterial pressure decreased from 128 mm Hg to 114 mm Hg and mean diastolic pressure decreased from 75 mm Hg to 67 mm Hg (P less than 0.005) four minutes after injection. Mean Apnoea occurred in 14 patients, with a mean onset time of 82 sec and a mean duration of 30 sec. Patients showed a decrease in mean respiratory rate from 13.7 breaths/min to 12.8 breaths/min two minutes after injection of midazolam. A larger dose than used in this study would be necessary for satisfactory use of midazolam as an induction agent for general anaesthesia.

Adult↗
PubMed1976

Vestibular dysfunction in emotionally disturbed children.

Twenty-five emotionally disturbed children were tested on the Lafayette Clinic Cognitive Perceptual Motor (CPM) battery. The children were next examined for vestibular function by measuring ocular nystagmus for three different rotation rates. Under conditions of eye closure, children found to have two or more marked CPM deficits demonstrated a significantly reduced amplitude of postrotatory nystagmus as compared to CPM nondeficit children, and for the slowest rate of rotation (30 degrees/sec), a significantly decreased duration of nystagmus.

Affective Symptoms↗