Recent advances in the role of non-invasive ventilation in acute respiratory failure

Non-invasive positive pressure ventilation (NIPPV) is the technique of delivering mechanical ventilation without endotracheal intubation or tracheostomy. This is increasingly being utilised in both acute and chronic conditions. Strong evidence supports the use of NIPPV for acute respiratory failure (ARF) to prevent endotracheal intubation (ETI) and to facilitate extubation in patients with acute exacerbations of chronic obstructive pulmonary disease, to avoid ETI in acute cardiogenic pulmonary oedema (ACPO), and in immunocompromised patients. Weaker evidence supports the use of NIPPV for patients with ARF due to asthma exacerbations, with postoperative ARF, pneumonia and acute lung injury/acute respiratory distress syndrome. NIPPV should be applied under close monitoring for signs of treatment failure and, in such cases, ETI should be promptly available. A trained team, at an appropriate location, with careful patient selection and optimal choice of devices can optimise the outcome of NIPPV.     

Factors associated with attrition in patients with breast cancer: a retrospective study

BACKGROUND: Attrition in follow up is a key limitation of longitudinal studies, especially in cancer patients in developing countries. We did a retrospective analysis of possible factors that resulted in attrition of patients with breast cancer during follow up. METHODS: This study is a comparison between patients who came for a follow up regularly to our clinic with those who did not but could be contacted on phone or by post. A computerized grouped database was constructed with the following parameters: age, religious community, other co-morbid conditions if present, distance from place of residence to our city, residence in city/ village, initial stage of the disease, type of treatment and disease relapse or death. RESULTS: Using binary logistic regression, disease relapse was found to be the most important cause of non-compliance. The odds ratio for irregularity or loss to follow up of patients with disease relapse was 2.53 (95% CI: 1.17-5.46; p = 0.02) for patients who were alive with disease relapse and 6.1 8 (95% CI: 3.47-11.02; p < 0.001) for patients who had died due to the disease compared with those who were alive and free of disease. The age and place of residence in a village were other significant factors. The odds of attrition due to age were 1.03 (95% CI: 1.01-1.05; p = 0.04) for each year of increase in age and that of residence in a village was 1.85 (95% CI: 1.02-3.36; p = 0.04). CONCLUSION: Age, disease relapse and residing in a village are important causes of attrition during follow up of patients with breast cancer in India.     

Cystic schwannoma of the pelvis

Schwannomas are benign tumours that arise from the Schwann cells of nerve fibres. They commonly occur in the head and neck, mediastinum and extremities. They are extremely rare in the pelvis. These are usually slow growing tumours and are often detected incidentally. Pre-operative diagnosis is extremely difficult as there are no definitive signs on imaging. Aspiration biopsy is often inconclusive or misleading. Surgical excision is both diagnostic and therapeutic. As these tumours are often large in size, open excision is most commonly performed. We describe a case of a large, cystic schwannoma of the pelvis causing bladder outlet obstruction and bilateral hydroureteronephrosis. Complete surgical excision was performed laparoscopically.