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Biomedical subjects

R E Gold

Publications and source records attributed to R E Gold.

At least 37 records · Page 2Linked to original sources
PubMed1989

Laundry parameters as factors in lowering methyl parathion residue in cotton/polyester fabrics.

Cotton/polyester fabrics were contaminated with a 1.25% solution of methyl parathion (MeP) emulsifiable concentrate formulation, then laboratory laundered. The laundering variables were detergent type, concentration, water volume, and mechanical agitation. Specimens were unfinished (UN) and soil repellent finished (SR) fabrics. Heavy duty liquid and phosphate-built powdered detergents were equally effective when used in combination with a prewash product. A negative linear relationship between detergent concentration and MeP residue remaining after laundering was established. An interaction between detergent concentration and fabric finish was observed. Soil repellent finished fabrics required detergent concentrations above the recommended amount for more efficient soil removal. A negative linear relationship between water volume and after-laundering residue was observed. Water volume played a more significant role in pesticide removal than agitation during laundering.

Chromatography, Gas↗
PubMed1989

Silent deep vein thrombosis in immobilized multiple trauma patients.

Although few trauma patients sustain fatal pulmonary embolism, a large population is at risk from nonfatal embolism due to unrecognized deep vein thrombosis (DVT). Thirty-eight of 39 immobilized trauma patients at bed rest for 10 days or longer had venographic study of their lower extremities to evaluate for the presence of silent DVT. Sixty percent of patients had silent DVT, with thrombi extending above the knee in half the patients with clot. DVT was documented in 67 percent of patients with major lower extremity fractures and 59 percent of patients without major fractures. DVT increased with increasing age but not with injury severity score.

Adult↗
PubMed1989

Auditory thresholds in the American cockroach (Orthoptera: Blattidae): estimates using single-unit and compound-action potential recordings.

Recent commercial suggestions that insect populations can be controlled through the use of ultrasound raises the question of whether or not certain insects have receptors that are sensitive to high-frequency sound. Single neural unit discharges and compound-action potentials were recorded from the ventral nerve cord in the American cockroach, Periplaneta americana L., to constant rise time tone pulses from 100 to 40,000 hertz (Hz). Unit responses and compound-action potentials show that the cockroach is insensitive to sound above approximately 3,000 Hz. Data relating latency of the response to intensity of the stimulus suggest that the cockroach cercal system operates on the principle of energy envelope detection. Decreases in latency likely occur primarily as a result of increases in the rate of membrane depolarization in cercal dendrites.

Action Potentials↗
PubMed1988

Computed tomography in acute fatty liver of pregnancy.

A case of the diagnosis of acute fatty liver of pregnancy proved by biopsy is described. In this case computed tomography showed decreased attenuation over the liver, and this attenuation is compatible with fatty infiltration. Computed tomography may be useful in the differential diagnosis of jaundice in pregnancy.

Acute Disease↗
PubMed1986

Pediatric digital subtraction angiography: intraarterial and intracardiac applications.

Intraarterial digital subtraction angiography (IA-DSA) was performed in 80 pediatric patients. Forty-four underwent arterial injections with digital filming techniques. Of the 130 injections, DSA imaging was good or excellent in 121, often allowing resolution of vessels 1 mm in size. Thirty-six of the 80 patients underwent cardiac evaluation with intra-cardiac injections. Improved contrast resolution with IA-DSA allowed the use of smaller catheters (3-4F) and smaller amounts of contrast material. Immediate availability of subtracted images (no film processing delay) resulted in shorter total procedure time. Outpatient studies are possible. IA-DSA provides several notable advantages for the pediatric patient.

Adolescent↗
PubMed1986

Vascular trauma to the extremities and lower neck: initial assessment with intravenous digital subtraction angiography.

Rapid assessment of a patient with possible major peripheral vascular injury is essential to preserve limb function. Intravenous digital subtraction angiography (IV DSA) allows rapid evaluation of these patients without the need for intraarterial examination. We report our experience in 295 vessels studied by IV DSA for the evaluation of possible traumatic arterial injury to the extremities or neck. Of our study population requiring angiography (469 patients), 63.4% were appropriate candidates for IV DSA. Of the vessels studied by IV DSA, 93.6% required no further radiologic evaluation. A normal appearance on IV DSA study indicates no major vascular injury; patients with positive studies may proceed to surgery without further interventional assessment.

Aneurysm↗
PubMed1984

Digital venous angiography. A prospective evaluation in peripheral arterial trauma.

Digital venous angiography (DVA), a new radiographic technique, was prospectively compared to conventional intra-arterial angiography (CA) in a group of 153 patients with trauma and suspected peripheral arterial injury ( PAI ). Criteria for entry included: large hematoma, proximity to a major vessel, shotgun wounds, blunt injury of the extremities, and fractures or dislocations of areas with high risk of arterial injury. Patients with unequivocal clinical evidence of PAI were excluded. Study patients had both DVA and CA. Sixteen injuries were diagnosed: lacerations (9), transection (1), AV fistulae (2), thromboses (2) and minute intimal flaps (2). All patients with abnormal studies were surgically explored; there were no false-positives. There were no known false-negatives with CA. The intimal flaps were not recognized initially on DVA and their clinical significance is questioned. DVA, compared to CA in PAI , had decreased patient discomfort, cost, and morbidity. It has the potential for study of multiple areas of the body from a single I.V. catheter. DVA can probably replace CA for civilian penetrating wounds. CA may remain the standard for blunt and high velocity injuries.

Adolescent↗