Biomedical subjects

R Shenoy

Publications and source records attributed to R Shenoy.

22 records · Page 2Linked to original sources

PubMedDate not supplied

Physical fitness of urban American children.

The Bruce treadmill protocol was used to evaluate the exercise endurance in a pediatric urban population. The sample population consisted of 525 healthy children 4 to 18 years of age (303 males and 222 females). Endurance time increased with age in males and increased up to 10 to 12 years of age in females, thereafter leveling off. Results were compared with those of a widely used standard reference of normal for treadmill exercise testing in children. Mean endurance times were significantly shorter compared to those of the reference study (p < 0.03). When the subjects were grouped in percentiles based on the reference study, 61% of males and 81% of females performed below the 25th percentile. There was a strong negative correlation between body mass index and endurance time (p < 0.0001), suggesting that obesity is a major contributor to decreased physical fitness. Compared to subjects in the reference study, children from a large U.S. metropolitan area have markedly diminished exercise endurance times, suggesting poor physical fitness. Inactivity with consequent lack of fitness, if unchecked, are likely to lead to cardiovascular disorders in adulthood. Efforts should be made to encourage physical fitness in children.

Adolescent↗

PubMedDate not supplied

Automated MR imaging protocols for improved patient throughput.

The total time spent on each patient during an MR study determines patient throughput and ultimately influences MR scan charges. Actual data acquisition often represents only a small portion of this examination time. Other functions such as patient loading and unloading, positioning, coil placement, scan setup, and image reconstruction time also contribute to the total examination time. We describe a technique for creating automated imaging protocols for standard MR examinations which optimize these functions, thereby decreasing operator interventions and shortening the overall examination time. A prototype sequence for examining the larynx and neck was developed which allowed three sequential multiple slice acquisitions to be obtained in three orthogonal planes with a single operator setup step. All tuning and scan placement after this first step was done under computer control. The new sequence allowed larynx and neck studies to be performed in less than 30 min for spin echo and under 16 min for field echo instead of the 50-60 min required by previous methods. The new technique should be useful for improving patient throughput for a cariety of standardized examinations including the temporal bone, head and neck, joints, and other regions.

Computers↗

PubMedDate not supplied

Conjunctival ulcer--mucocutaneous or ocular manifestation of Behçet's disease? A case report.

PURPOSE: To report the rare occurrence of conjunctival ulceration in a patient with Behcet's disease. METHODS: Case report. A 35 year old "Behçet's suspect" on azathioprine presented to the ophthalmic emergency room with a painful ulceration involving the inferior palpebral conjunctiva of her left eye. RESULTS: The ulcer responded to treatment with topical steroids and healed without scarring. CONCLUSIONS: Conjunctival ulceration is not a common manifestation of Behcet's disease. Its occurrence during maintenance therapy with azathioprine in a patient with Behcets could be either incidental or indicate inadequate immunosuppression.

Administration, Topical↗

PubMedDate not supplied

Microperimetric evaluation of macula in retinopathy of membranoproliferative glomerulonephritis type II: a case report.

PURPOSE: To report on the microperimetric evaluation of the central visual field in a patient with retinopathy due to membranoproliferative glomerulonephritis. METHODS: The central 20 degrees visual field was evaluated using fundus-related perimetry with (Nidek MP1) microperimeter in a patient with proven membranoproliferative glomerulonephritis type II, who had multiple drusen-like lesions involving the posterior pole of both eyes, with corresponding window defects on fundus fluorescein angiogram. RESULTS: Static threshold perimetry of the central 20 degrees using a 10 dB threshold, Goldmann size II stimulus, with (Nidek-MP1) microperimeter showed reduction in retinal sensitivity in the parafoveal and in the temporal paramacular areas in both the eyes that had drusen-like lesions. CONCLUSIONS: Early loss of function in retinopathy of membranoproliferative glomerulonephritis type II can probably be detected by fundus-related microperimetry.

Adult↗