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Biomedical subjects

L E Smith

Publications and source records attributed to L E Smith.

At least 73 records · Page 4Linked to original sources

Restoration of volitional limb movement of hemiplegics following patterned functional electrical stimulation.

24 hemiplegic patients completed patterned functional electrical stimulation (PFES) upon the afflicted arm and leg. The multichannel PFES program was mathematically derived from the EMG agonist/antagonist pattern recorded from each subject's unaffected limbs during a series of monitored, voluntary movements. The average improvement in volitional range of motion for the group's paralyzed limbs was 90% for the upper extremities and 69% for the lower extremities. For partially paralyzed limbs, there was an average increase in range of movement of 68% for the upper extremities and 26% for the lower extremities. These findings support the relearning-based, PFES open-loop theory which uses individualized therapeutic PFES-derived from EMG coordination patterns modeled from specific, ballistic limb movements to rehabilitate patients who have been immobilized after stroke.

Cerebrovascular Disorders↗

Outpatient hemorrhoidectomy.

Fifty-three patients underwent closed hemorrhoidectomies on an outpatient basis at the Naval Hospital Bethesda, Bethesda, Maryland, and George Washington University Hospital, Washington, DC. Our goal was to show that closed hemorrhoidectomies could be tolerated well in an outpatient setting. We found that patients tolerated this surgery well, and there was no progression of complications due to the out-of-hospital setting. An additional benefit is the cost savings to the patient who does not require an overnight hospitalization. Outpatient hemorrhoidectomy is a technique that can be effectively used in an ambulatory surgical setting with good patient tolerance and acceptance.

Adult↗

Anal fissures.

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Anal Canal↗

Anal hemorrhoids.

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Anal Canal↗

Detection and surveillance of colorectal cancer.

Colorectal cancer is the second most common cause of cancer in the United States. The overall mortality rate approaches 60%. However, the detection of early lesions results in a mortality rate of 20% or less. Therefore, if improvement in survival is to occur, increased efforts need to be focused not only on primary prevention but also on early detection of malignant lesions and the eradication of potentially malignant lesions. There is no universal consensus as to how this can be accomplished. The purpose of this article is to serve as a guideline, providing a practical basis for improving early detection and management of colorectal cancer and its precursors.

Adult↗

Gastroduodenal polyps in familial polyposis coli.

This endoscopic evaluation of 25 patients with familial polyposis coli (FPC) further establishes gastro-duodenal polyps as a significant extracolonic manifestation of the condition. Ten patients had polyps, distributed as follows: stomach (2), duodenum (4), stomach and duodenum (4). Altogether, there were six gastric and seven duodenal lesions. Half of the gastric tumors were hyperplastic and half were adenomatous. All the duodenal tumors were adenomatous, four being ampullary. The one symptomatic patient had intra-polypoid adenocarcinoma. There were no significant correlations between the endoscopic findings and patient age, sex, presence of colon cancer, or other extracolonic abnormalities. The authors affirm that gastroduodenal polyps are an important component of FPC and recommend that all patients with this condition undergo initial and follow-up gastroduodenoscopy. Multiple small lesions may be carefully monitored, but larger ones, particularly those in the region of the ampulla, must be excised.

Adenomatous Polyposis Coli↗