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Biomedical subjects

G E Forster

Publications and source records attributed to G E Forster.

At least 19 recordsLinked to original sources
PubMed2001

Management of Chlamydia trachomatis genital tract infection in Genitourinary Medicine clinics in the United Kingdom's North Thames Region 1999.

Assessment of clinical management of Chlamydia trachomatis genital tract infection was made, with particular regard to the UK National Guideline. Questionnaires for self-completion, mailed to lead clinicians in 31 Genitourinary Medicine (GUM) clinics in the North Thames Region between May and June 1999, focused on policies and practice. Audit of actual management of up to 10 most recent cases (5 male and 5 female) attending each clinic within the past 2 years was also undertaken. Twenty-two units (71% response) completed the survey questionnaire and 23 units (74% response) audited a total of 229 cases (males=108, females=118, sex not stated=3). Findings indicate that GUM clinics are managing these infections largely as recommended in the national guideline. Nucleic acid amplification techniques will supersede established diagnostic tests for GUM clinics in North Thames, increasing costs for the service, but also sensitivity of detection.

Adolescent↗
PubMed2001

Management of epididymo-orchitis in Genitourinary Medicine clinics in the United Kingdom's North Thames region 2000.

A questionnaire survey and case notes audit reviewing management of epididymo-orchitis (E-O) by 34 Genitourinary Medicine (GUM) clinics located in the North Thames was undertaken. Twenty-two clinics (65%) returned completed questionnaires and audited a total of 83 newly diagnosed cases. All participating clinics offer microscopy of urethral smears and screening for Neisseria gonorrhoeae and Chlamydia trachomatis to all patients, regardless of age. However, greater numbers of clinics would offer routine microbiology of mid-stream urine (MSU) samples (20/22, 91% versus 16/22, 73%) and scrotal ultrasound (5/22, 23% versus 1/22, 5%) to patients aged over 35, compared with men under 35. Half of the cases audited were due either to sexually transmitted infections (STIs) (41/83, 49%), or associated with ascending urinary tract infections (4/83, 5%). No obvious infectious cause was identified for 38/83 cases (46%). Reported management was appropriate for the causative conditions diagnosed and accorded with the UK National Guidelines for this and related conditions.

Adult↗
PubMed2000

Combined effects of aerobiological pollutants, chemical pollutants and meteorological conditions on asthma admissions and A & E attendances in Derbyshire UK, 1993-96.

BACKGROUND: The effect of outdoor aeroallergen exposure in asthma may be enhanced by air pollutants, including ozone, nitrogen dioxide and particulates, and by certain weather conditions. It is not yet established whether these interactions are important in determining asthma morbidity at the population level. OBJECTIVE: We have investigated the joint effects of aeroallergens, rainfall, thunderstorms and outdoor air pollutants on daily asthma admissions and Accident and Emergency (A & E) attendance using routinely collected data between 1993 and 1996 from Derby in central England. METHODS: Daily counts during the aeroallergen season of grass and birch pollen, basidiospores, Didymella, Alternaria and Cladosporium, maximum 1 hour ozone and nitrogen dioxide and daily average black smoke measurements, all made in the vicinity of the city centre, were categorized in tertiles. Rainfall was classified as dry, light (</= 2 mm) or heavy (> 2 mm). The modifying effect of outdoor pollutant levels, and rainfall or the occurrence of a thunderstorm, upon the effects of individual aeroallergens on asthma admissions and A & E attendance were investigated by fitting appropriate interactions in log linear autoregression models with adjustment for potential confounders. RESULTS: We found a significant interaction between the effects of grass pollen and weather conditions upon A & E attendance, such that the increase with grass pollen count was most marked on days of light rainfall (adjusted rate ratio for >/= 50 vs < 10 grains/m3 at lag 2 days = 2.1, 95% CI 1.4, 3.3). Asthma admissions increased with Cladosporium count. We found no statistically significant interactions between effects of any individual aeroallergen and outdoor air pollutant upon either measure of asthma morbidity. CONCLUSIONS: Rainfall and thunderstorms are important effect modifiers in the relation between grass pollen and measures of acute asthma morbidity. Interactions between ambient levels of aeroallergens and chemical pollutants in the Derby area do not play a major role in determining asthma admissions and A & E attendance.

Air Microbiology↗
PubMed2000

Benign monoclonal expansion of CD8+ lymphocytes in HIV infection.

BACKGROUND: A transient expansion of the CD8+ T cell pool normally occurs in the early phase of HIV infection. Persistent expansion of this pool is observed in two related settings: diffuse infiltrative lymphocytosis syndrome (DILS) and HIV associated CD8+ lymphocytosis syndrome. AIM: To investigate a group of HIV infected patients with CD8+ lymphocytosis syndrome with particular emphasis on whether monoclonality was present. METHODS: A group of 18 patients with HIV-1 infection and persistent circulating CD8+ lymphocytosis was compared with 21 HIV positive controls. Serum samples were tested for antinuclear antibodies, antibodies to extractable nuclear antigens, immunoglobulin levels, paraproteins, human T lymphotropic virus type 1 (HTLV-1), Epstein-Barr virus, and cytomegalovirus serology. Lymphocyte phenotyping and HLA-DR typing was performed, and T cell receptor (TCR) gene rearrangement studies used to identify monoclonal populations of T cells. CD4+ and CD8+ subsets of peripheral blood lymphocytes were purified to determine whether CD8+ populations inhibited HIV replication in autologous CD4+ cells. RESULTS: A subgroup of patients with HIV-1 infection was found to have expanded populations of CD8+ T cell large granular lymphocytes persisting for 6 to 30 months. The consensus immunophenotype was CD4- CD8+ DRhigh CD11a+ CD11c+ CD16- CD28+/- CD56- CD57+, consistent with typical T cell large granular lymphocytes expressing cellular activation markers. Despite the finding of monoclonal TCR gene usage in five of 18 patients, there is evidence that the CD8+ expansions are reactive populations capable of mediating non-cytotoxic inhibition of HIV replication. CONCLUSIONS: A subgroup of HIV positive patients has CD8+ lymphocytosis, but despite the frequent occurrence of monoclonal TCR gene usage there is evidence that this represents an immune response to viral infection rather than a malignant disorder.

Adult↗
PubMed1997

Acceptability and compliance with daily injections of procaine penicillin in the outpatient treatment of syphilis-treponemal infection.

BACKGROUND: In the United Kingdom, it is recommended that syphilis should be treated with intramuscular daily procaine penicillin with or without oral probenecid for 8 to 21 days. However, it has been argued that this regimen would be unacceptable to patients in terms of daily attendance and volume of drug administered, resulting in poor compliance. GOAL: To assess the acceptability of and compliance with daily procaine penicillin for 10 to 17 days in patients attending an East London Genito-Urinary Medicine Clinic with a diagnosis of syphilis-treponemal infection. STUDY DESIGN: The notes of 210 consecutive patients attending with syphilis-treponemal infection who had been offered treatment with daily procaine penicillin, with or without oral probenecid for 10 to 17 days, were reviewed retrospectively. RESULTS: Of 210 patients who were offered daily procaine penicillin, 42 (20%) declined and were given oral doxycycline, amoxicillin, or depot penicillin injections. Of 168 patients who accepted daily procaine penicillin, depending on the stage of infection, 90 (54%) had 1.8 g of daily procaine penicillin together with oral probenecid 500 mg every 6 hours for 17 days (high-dose regimen), 57 (34%) had 0.6 g of daily procaine penicillin for 10 to 17 days (low-dose regimen), and 21 (12%) had mixed-dose regimens ranging from 0.5 to 2.4 g. Of the 90 who had high-dose regimen, 76 (84%) complied with treatment compared with 50 (88%) of 57 who had low-dose regimen. All 21 patients who had mixed-dose regimens complied fully. CONCLUSIONS: Daily procaine penicillin is a well-accepted out-patient regimen with excellent compliance (88% overall) and minimal side effects. Because the high-dose regimen has been shown to achieve treponemicidal levels of penicillin in the cerebrospinal fluid, it is recommended for patients with neurosyphilis or those in whom neurosyphilis cannot be excluded. It also could be considered for patients with concomitant human immunodeficiency virus infection in view of the possible progression to neurosyphilis in those treated with depot penicillin.

Female↗
PubMed1997

Survival and treatment of AIDS patients 1984-1993: experience of a smaller east London HIV centre.

OBJECTIVE: To assess changes in survival from diagnosis of AIDS for patients managed in a small East London HIV clinic and the impact of therapeutic interventions on these survival patterns. DESIGN: Prospective observational study. SETTING: Grahame Hayton Unit, Royal London Hospital. SUBJECTS: 156 AIDS patients managed between 1984 and 1993. MAIN OUTCOME MEASURE: Survival from diagnosis of AIDS. RESULTS: Median survival for those diagnosed with AIDS before 1 January 1987 was 9.4 months compared with 27.2 months after 1 January 1987 (logrank chi 2 = 10.3, p = 0.001): CD4 count at time of AIDS and treatment with zidovudine or PCP prophylaxis were significantly associated with survival from time of AIDS. Of the 156 AIDS patients, 93 had been treated with zidovudine sometime during their follow up, 60 had received primary and 50 secondary Pneumocystis carinii pneumonia (PCP) prophylaxis. After controlling for gender, sexual orientation, age at time of AIDS, CD4 count at time of AIDS, diagnosis when first presenting to the clinic (AIDS/non-AIDS) and year of AIDS diagnosis, all patients who received either zidovudine or PCP prophylaxis had significant reductions in the risk of dying compared with those who received neither PCP prophylaxis nor zidovudine: a reduction in risk of dying between 71% (95% CI 40% to 86%) and 83% (95% CI 50% to 94%) was observed depending on the combination of zidovudine and PCP prophylaxis. CONCLUSION: A debate is currently taking place about the format and value of HIV service provision with increasing numbers of HIV infected individuals managed at smaller HIV clinics. Larger clinics concentrate clinical expertise on a single site and facilitate clinical trials. Smaller well run HIV units staffed by competent health professionals not only provide clinical outcomes similar to those obtained in the larger centres, but may also allow a more informal and intimate setting for HIV infected individuals who want to be treated nearer their area of residence.

Acquired Immunodeficiency Syndrome↗
PubMed1996

Emergency hormonal contraception usage in genitourinary medicine clinic attenders.

OBJECTIVE: To assess the indications for usage of emergency hormonal contraception amongst a population of London genitourinary medicine clinic attenders. METHODS: In a prospective study, 150 consecutive women receiving emergency hormonal contraception (EHC) were enrolled. The attending doctor completed a questionnaire of patient details and prescribed EHC with prophylactic prochlorperazine. Follow-up was arranged three weeks later, at which time outcomes and side-effects of therapy were recorded. For those women who did not reattended as planned case notes were reviewed at three months. RESULTS: Of 150 women surveyed, 100 (66%) reported contraceptive method failure, 48 (32%) had used no contraception at the time of last sexual intercourse and two requested EHC after sexual assault. Ninety three (62%) reported condom failure, 7 (5%) oral contraceptive pill failure. Seventy five (50%) had used EHC before (range 1-10 times). Seventy one (47%) women reattended within three months. Five (3.3%) of the 150 women were pregnant; none of these cases had experienced nausea or vomiting whilst taking EHC. Side-effects were reported by 22 (31%) of the 71 patients who reattended. Nine (6%) women had been followed-up in the family planning advisory clinic. Of the 71 women who reattended, 39 (55%) reported that their preferred future method of contraception would be condoms. Of the 150 women 19 (13%) underwent tests for sexually transmissible infections within one month of presentation. CONCLUSIONS: EHC usage in this population was associated with a failure rate of at least 3.3% and an overall side effect rate of 31%. Despite requests for emergency contraception because of condom failure many elected to continue using condoms as their preferred method of contraception. The majority of women (53%) did not return for follow-up or family planning advice, and so we believe that future contraceptive plans must be addressed at the time EHC is prescribed.

Adolescent↗
PubMed1996

A case-controlled study of the sexual health needs of lesbians.

OBJECTIVES: To evaluate and compare the range of genital infections diagnosed in a group of lesbians attending an inner city genitourinary clinic with a control group of heterosexual women attending the same clinic. SETTING: The Ambrose King Centre, the Royal London Hospital, a genitourinary clinic within which the Audre Lorde Clinic, a specialist sexual health clinic for women identifying as lesbians, is operated. SUBJECTS: Two hundred and forty one women attending the specialist clinic between October 1993 and September 1994. Heterosexual controls matched for age and ethnicity were selected from the same time period. METHODS: A retrospective case note analysis was made of 241 lesbians and 241 matched heterosexual controls. Data were collected on age, ethnicity, symptoms, diagnoses and services used. RESULTS: An infection was diagnosed in 129 (65%) of the lesbians and 126 (62%) of the heterosexual women. Only 23 (10%) of the lesbians exclusively practised same gender sexual contact. Genital herpes (p = 0.05) and genital warts (p = 0.005) were more common in the heterosexual women. Gonorrhoea and chlamydia infection were infrequent diagnoses in both groups, occurring in four (2%) lesbians and 14 (7%) heterosexuals (p = 0.05). Bacterial vaginosis occurred in 65 (33%) of the lesbians and 27 (13%) of the heterosexuals (p < 0.0001). Cervical cytology abnormalities were uncommon but only found in the lesbians. CONCLUSIONS: Screening for genital infections in lesbians is appropriate. The high prevalence of bacterial vaginosis in this group is unexplained but suggests a possible sexual transmission. Lesbians should be included within the cervical cytology screening programme.

Adolescent↗
PubMed1995

Incidence of symptomatic urinary tract infections in HIV seropositive patients and the use of cotrimoxazole as prophylaxis against Pneumocystis carinii pneumonia.

OBJECTIVES: To determine the incidence of symptomatic urinary tract infections in HIV seropositive patients and to assess whether this varies with stage of disease, risk group or the use of co-trimoxazole as prophylaxis against Pneumocystis carinii pneumonia. METHODS: A retrospective case note review of 175 HIV-infected patients attending The Royal London Hospital between July 1988 and December 1992 was performed. A urinary tract infection was defined as a pure culture of > or = 10(5) colony forming units in a mid-stream specimen of urine from a patient with symptoms consistent with a urinary tract infection. RESULTS: Urinary tract infections occurred in 10 (5.7%) of 175 patients, with an incidence of 1.49 per hundred patient years. Urinary tract infections were significantly more common in patients with AIDS or a CD4 lymphocyte count below 0.2 x 10(9)/l (or both) when compared to those without AIDS and a CD4 lymphocyte count above 0.2 x 10(9)/l (5.4 vs. 0.5 urinary tract infections per hundred patient years, p = 0.00005). Women with AIDS or a CD4 count below 0.2 x 10(9)/l (or both) had an incidence of urinary tract infection of 18.5 per hundred patient years. No significant difference was found between the incidence of urinary tract infections in those taking co-trimoxazole as Pneumocystis carinii pneumonia prophylaxis and those taking alternative or no prophylaxis (2.6 vs 6.4 per hundred patient years, p = 0.39). CONCLUSIONS: Urinary tract infection represents a considerable health problem amongst HIV infected patients. Our data show that urinary tract infections are more common in patients with advanced compared with early HIV infection. Cotrimoxazole, when taken by patients as prophylaxis against Pneumocystis carinii pneumonia did not appear to reduce the incidence of urinary tract infection.

CD4 Lymphocyte Count↗