A retrospective study of crossover ambulatory oxygen walk testing in patients with fibrotic lung disease.

BACKGROUND: Fibrotic interstitial lung disease (ILD) comprises a group of lung conditions that are often progressive, debilitating, and life-shortening. Ambulatory oxygen therapy (AOT) is regularly prescribed to manage symptoms in patients with fibrotic ILD. In our institution, the decision to prescribe portable oxygen is made on the basis of oxygen improving exercise capacity, measured with the single-blinded, crossover ambulatory oxygen walk test (AOWT). This study aimed to investigate the characteristics and survival rates of patients with fibrotic ILD who have either positive or negative results on the AOWT. METHODS: This retrospective cohort study compared the data from 99 patients with fibrotic ILD who underwent the AOWT. These patients were classified into two groups based on whether they showed improvement in the AOWT with supplemental oxygen (positive group) or no improvement (negative group). Patient demographics for both groups were compared to determine any significant differences. A multivariate Cox proportional hazards model was used to analyze the survival rates of the two groups. RESULTS: Out of the 99 patients, 71 were in the positive group. We compared the measured characteristics between the positive and negative groups and found no significant difference, wherein the adjusted hazard ratio was 1.33 (95% confidence interval 0.69-2.60, P = 0.40). CONCLUSIONS: The AOWT can be used to rationalize AOT, but there was no significant difference in baseline characteristics or survival rates between patients whose performance was improved or not in the AOWT.

Health issues in newly arrived African refugees attending general practice clinics in Melbourne.

OBJECTIVE: To identify the most common health issues diagnosed by general practitioners in newly arrived African refugees. DESIGN: Descriptive study based on a purposive sample of six GPs to collate data from medical records of patients from African countries who had attended their clinics for the first time between 1 January and 30 June 2005. SETTING: Two community health centres and two private general practices in metropolitan Melbourne. PARTICIPANTS: African refugee patients who arrived in Australia after 1 June 2004 and were seen by the six participating GPs between 1 January and 30 June 2005. MAIN OUTCOME MEASURES: Demographic characteristics, laboratory test results and final diagnoses. RESULTS: Data were collected from 258 patient files. Most patients were from Sudan (57%) or Liberia (17%). Half were aged under 15 years. The most common health problems identified were inadequate vaccinations, nutritional deficiencies (vitamin D and iron), infectious diseases (gastrointestinal infections, schistosomiasis, and latent tuberculosis) and dental disease. Musculoskeletal, psychological and social problems were common in adults. 37% of patients were tested for latent tuberculosis, and 25% of these tested positive. CONCLUSIONS: African refugees require comprehensive health assessments for undiagnosed and untreated health problems. While most of the common diseases identified are non-communicable, if left untreated they will affect the long-term health and productivity of new settlers.