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Biomedical subjects

D Hale

Publications and source records attributed to D Hale.

At least 37 records · Page 2Linked to original sources
PubMed1994

Diarrhea associated with Cyanobacterialike bodies in an immunocompetent host. An unusual epidemiological source.

OBJECTIVE: To describe a patient who developed diarrhea secondary to Cyanobacterialike bodies (CLBs) after exposure to contaminated water in his home. DESIGN: Case report. SETTING: General community. PATIENT: Healthy, elderly man. INTERVENTION: None, self-limited illness. RESULTS: The patient's clinical course was consistent with illness caused by CLBs. Cyanobacterialike bodies were recovered from the patient's stool sample and the contaminated water to which he was exposed. CONCLUSION: Internists and laboratory technicians should be aware of CLBs as a cause of protracted diarrhea in the community.

Aged↗
PubMed1994

Management of upper respiratory tract infections by telephone.

We surveyed Utah general internists (N = 134) regarding their attitudes toward and practices associated with telephone management of upper respiratory tract infections. The questionnaire contained 3 case vignettes--viral upper respiratory tract infection, streptococcal pharyngitis, and acute infectious epiglottitis--and a series of questions were asked about telephone diagnosis, management preferences (clinic versus telephone), and telephone management practices. The 53 respondents (40%) were able to make important diagnostic distinctions about upper respiratory tract infections from a written vignette. As the likelihood of a complicated or serious condition increased, patients would be appropriately triaged for clinical evaluation. Most internists would make a written record of the telephone conversation. Only 1 internist of the 53 would charge for telephone management.

Acute Disease↗
PubMed1993

Comparison of pooled formalin-preserved fecal specimens with three individual samples for detection of intestinal parasites.

Triplicate preserved fecal samples from 265 patients were pooled into single samples, and the recovery rate of intestinal parasites from the pooled samples was compared with that from the individual samples. Parasites were detected in 109 patients when results from the individual samples were used compared with 108 patients when results from the pooled specimens were used. Pooling preserved fecal samples is an efficient and economical procedure for the detection of ova and parasites.

Animals↗
PubMed1992

Use of Hemo-De to eliminate toxic agents used for concentration and trichrome staining of intestinal parasites.

In a blind comparison, 465 randomly collected clinical fecal specimens were examined. Hemo-De was found to be an excellent replacement for ethyl acetate in the concentration procedure and for carbol-xylene and xylene in the trichrome staining procedure. Elimination of toxic reagents, combined with its lower cost, makes Hemo-De the preferred choice in routine parasitology examinations.

Acetates↗
PubMed1991

Primary cardiac valve tumors.

To investigate the characteristics of primary cardiac valve tumors, we retrospectively analyzed our multiinstitutional experience from 1932 through 1990. We encountered 56 valvular tumors in 53 patients. The average age of these patients was 52 years (range, 2 to 88 years) and 79% (42/53) were male. Symptoms were present in 38% (20/53) and were neurological in 15% (8/53). Four patients experienced sudden death. Each of the four valves was affected with approximately equal frequency: 16 aortic, 15 mitral, 13 pulmonary, and 12 tricuspid. All but four tumors were benign. The most common histological type was papillary fibroelastoma (41), followed by myxomas (5), fibromas (4), sarcomas (2), hamartoma (1), hemangioma (1), histiocytoma (1), and undifferentiated (1). Average tumor size was 1.15 cm (range, 3 mm to 7 cm), and the average size of fibroelastomas was 8 mm (range, 3 to 15 mm). Mitral valve tumors were more likely than aortic valve tumors to produce serious neurological symptoms or sudden death (8/15 versus 3/16; p less than 0.05). Six patients underwent echocardiography, and results were positive in each. All 6 underwent uncomplicated valve repair or replacement. Compared with a series of 407 nonvalvular tumors, cardiac valve tumors are more likely to occur in male patients (p less than 0.001) and adults (p less than 0.001). Valve tumors are also more commonly benign (p less than 0.001) and asymptomatic (p less than 0.001). These tumors demonstrate somewhat less aggressive behavior compared with non-valvular tumors, but their distinct propensity to produce serious clinical sequelae argues in favor of surgical resection for all cardiac valve tumors.

Female↗
PubMed1990

Incidence of anatomic variants in Guyon's canal.

This study was undertaken to determine the frequency of variations involving the anatomy of Guyon's canal. A series of 58 wrist dissections revealed a 22.4% incidence of anomalous muscles and a 1.7% incidence of anomalous nerve paths. The relationship of the deep branch of the ulnar artery to the superficial and deep branches of the ulnar nerve was found to vary. Accessory muscles passing through Guyon's canal are common, and are often found bilaterally. Aberrant branching of the ulnar nerve in this area is rare.

Humans↗
PubMed1988

Bar code earns respect.

Patients who report to the outpatient clinical laboratory at Parkland Memorial Hospital are being given a glimpse of the future. Parkland's addition of a sample management bar code hints at what the future has in store for clinical laboratory instrument interfaces.

Clinical Laboratory Information Systems↗
PubMed1987

Taking time out.

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Dentists↗