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Biomedical subjects

G J Green

Publications and source records attributed to G J Green.

At least 19 recordsLinked to original sources
PubMed2001

Human immunodeficiency virus-positive patients with posterior intracorneal precipitates.

PURPOSE: To describe an unusual and possibly new keratopathy in human immunodeficiency virus (HIV)-positive patients. DESIGN: Retrospective observational case series. PARTICIPANTS: : Six HIV-positive patients at four centers. METHODS: A complete medical history was obtained and a thorough ophthalmic examination was performed on each of the patients. RESULTS: Each patient had bilaterally symmetrical keratopathy consisting of variably pigmented round and reticular posterior intracorneal precipitates at the level of Descemet's membrane. The precipitates were diffuse, but larger and more prominent near the limbus and finer toward the central cornea. None of the eyes were inflamed, and all had normal vision. No patient had uveitis on presentation or any history of cytomegalovirus retinitis. CONCLUSION: These patients have a unique posterior keratopathy, which requires further investigation.

Adult↗
PubMed2000

Efficacy and safety of radiologically placed gastrostomy tubes in paediatric haematology/oncology patients.

BACKGROUND: The treatment of malnutrition, which is of great concern in paediatric haematology/oncology patients, is fraught with problems. The goals of our study were to document the complications and assess the weight gain with gastrostomy tubes (G-tubes) in this population. PROCEDURE: Patient data were acquired by retrospective review of all haematology, oncology, and bone marrow transplant (BMT) patients (n = 44) who received radiologically placed G-tubes at our institution over a 4-year period. RESULTS: Forty-four G-tubes were placed (59% peri-BMT). At tube placement, 55% of patients were malnourished and 45% were nourished. Seventy-five percent of patients had the procedure without general anaesthetic. Localized G-tube-site infection was the most common complication (41%). Major complications occurred in 3 patients; 2 patients experienced localized peritonitis, and 1 patient developed a localized collection of pus in the abdominal wall. There were no G-tube-related deaths. At 1 month after the tube insertion, 39% of patients had gained, 54% maintained, and 7% lost weight. At 3 months, 69% had gained, 28% maintained, and 3% lost weight. There was a statistically significant weight gain from the time of the G-tube placement to both 1 month (P < 0.018) and 3 months (P < 0.0001) after G-tube placement. Patients in all diagnosis categories showed improvement from 1 to 3 months. CONCLUSIONS: We conclude that retrograde tube placement is safe and can frequently be done without general anaesthetic and that G-tube feeding effectively reverses malnutrition and prevents weight loss in this patient population.

Adolescent↗
PubMed1994

Obstructive lung disease in children after allogeneic bone marrow transplantation.

Obstructive lung disease (OLD) has been described as a significant complication after allogeneic bone marrow transplantation (BMT). The incidence of OLD in adults appears to be low (approximately 3%), but there is little data for children. We analyzed 89 consecutive pediatric allogeneic BMTs, > or = 1.5 years post-BMT, performed at British Columbia's Children's Hospital from 1980 to 1992 for evidence of OLD. Diagnosis of OLD was based on clinical findings (nonproductive cough, wheezing, and dyspnea with no evidence of infection), pulmonary function tests (FEV1 < 80% and FEF25-75% < 60% predicted), lung biopsy, and computed tomography scan. Sixty-seven of the 89 children evaluated survived > or = 90 days and were classified as at risk for OLD. Thirteen of 67 (19.4%), developed OLD, 3 of which were transient. The development of OLD was strongly associated with the following high-risk groups: chronic graft-versus-host disease (GVHD) (37.1% OLD), increased donor age, acute GVHD, and either mismatched related or matched unrelated donor transplants. No correlation was found with methotrexate prophylaxis for GVHD, total body irradiation, or cytomegalovirus reactivity in either donor or recipient and the development of OLD. Further analysis of only children with chronic GVHD showed that liver involvement by GVHD before the onset of OLD (57.9%) was the only other significant predictive factor. We observed an overall increased prevalence of OLD in children compared with that previously reported in adults. Further studies are required to confirm whether age is a risk factor for development of OLD after allogeneic BMT.

Acute Disease↗
PubMed1994

Hepatitis C seroprevalence in bone marrow transplant recipients and haemophiliacs.

AIM: To determine the prevalence of antibodies to hepatitis C (anti-HCV) in patients who have undergone bone marrow transplantation in Wellington, prior to the introduction of hepatitis C screening, and to contrast these results with the prevalence of anti-HCV in the Wellington haemophiliac population. METHOD: Serum specimens were obtained from 30 patients who had undergone bone marrow transplantation for the treatment of haematological disorders, and from 29 haemophiliacs. Specimens were analysed using a second generation HCV immunoassay. RESULTS: Exposure to blood products was high in bone marrow transplant recipients with subjects receiving red cells or platelets from an average of 53 donors (range 15-100, SD 23.2) during their transplant procedure. Despite the high usage of blood products, only one of the 30 patients tested was positive for hepatitis C on the basis of second-generation antibody testing. Confirmatory testing in this patient, (anti-HCV immunoblot assay) was negative. In contrast, 26 of 29 (89%) haemophiliac patients tested were positive for anti-HCV. CONCLUSION: Although the infective risk of blood products cannot be underestimated, the risk of patients contracting hepatitis C from multiple single-unit transfusions, prior to the introduction of screening for hepatitis C was low. This contrasts with the high risk of hepatitis C seroconversion in patients exposed to pooled plasma products.

Adolescent↗
PubMed1991

Permanent pacemakers in nonagenarians.

We report our experience of 20 patients who have had permanent pacemakers implanted for the first time after the age of 90. The main indications were syncope or presyncope which occurred in 15 patients. Complete heart block was present in 14 patients. Syncopal and presyncopal symptoms were cured in 73%. Nonagenarians paced for complete heart block can expect to survive for as long as others of the same age without heart block. Permanent pacing is an effective and appropriate treatment in the very old.

Aged↗
PubMed1989

Treatment of hairy cell leukaemia with recombinant alpha interferon.

Eleven patients with progressive hairy cell leukaemia (three nonsplenectomised) were treated with recombinant alpha-2 interferon (Intron-A or Roferon-A) subcutaneously three times per week at a dosage of 3 x 10(6) units. Ten patients completed at least ten weeks of therapy and could be evaluated; one patient died of haemorrhage from severe thrombocytopenia after only three weeks treatment. Nine of the ten patients responded and all of these are regarded as good partial remissions (normalisation of all blood parameters but still discernible hairy cells in the marrow). Responding patients have all been followed for a median of two years and in one case 3 1/2 years since commencement of therapy. The patients are all transfusion independent and free of infection. We conclude that alpha-2 interferon therapy for progressive hairy cell leukaemia is effective therapy in both splenectomised and nonsplenectomised patients.

Adult↗
PubMed1986

Identifying potential family practice social work opportunities.

The results of a survey of private primary care family physicians relative to their interest in having social workers associated with their practices are reported. There are several family physician and practice setting variables associated with a positive response to the question of whether family physicians have or would like to have a social worker associated with their practice. These findings should be beneficial to social workers interested in becoming established in family practice. Implications of these factors are discussed.

Adult↗