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P Sundaram

Publications and source records attributed to P Sundaram.

62 records · Page 4Linked to original sources
PubMedDate not supplied

Flour mill lung: a pneumoconiosis of mixed aetiology.

We report two cases of mixed dust fibrosis which occurred in the setting of poorly ventilated flour mills where various kinds of grain, chiefly wheat, were ground using stones whose silica content was analysed to be greater than 80 percent. While one patient was a non-smoker and the other was an ex-smoker, both cooked on kerosene stoves in the same room. We propose the term 'Flour mill lung' for this form of pneumoconiosis. A larger study would be required to establish the entity and its incidence among flour mill workers.

Adult↗
PubMedDate not supplied

Tracheobronchomegaly associated tracheomalacia: analysis by sleep study.

Tracheobronchomegaly (TBM) occasionally may progress to extensive tracheomalacia which leads to respiratory failure. Spirometry, dynamic expiratory multidetector computed tomography (CT), bronchoscopy are used to diagnose patients of suspected tracheobronchomalacia. We used the technique of night-time monitoring of respiratory variables to show the presence of respiratory abnormalities during sleep and which was corrected by applying nasal continuous positive airway pressure (CPAP). The study showed the presence of both apnoea and hypopnoeas, which were obstructive in nature with an apnoea-hypopnoea index (AHI) of 11, no snoring and associated oxygen desaturation of 75 per cent. A second overnight study with nasal continuous positive airway pressure at a critical pressure of 8 cm, the AHI decreased to 3 along with no drop in oxygen saturation. This non-invasive technique should be considered as a diagnostic tool in tracheobronchomalacia and to know the outcome of CPAP, surgical or stent therapy in this condition.

Adult↗
PubMedDate not supplied

Constrictive bronchiolitis: a CT scan appearance.

Bronchiolitis obliterans or constrictive bronchiolitis is a distant clinical entity with obstructive airway disease. High resolution computed tomography (HRCT) of the thorax can often suggest the diagnosis with the characteristic "mosaic pattern". We present here two cases of bronchiolitis obliterans in which the HRCT showed the presence of this characteristic appearance.

Adult↗
PubMedDate not supplied

Flow volume loops: postural significance.

Upper airway obstruction is an important but often unrecognised cause of dyspnoea and ventilatory failure. Flow volume loop remains the most sensitive method to detect upper airway obstruction. We report a patient with Hashimoto's thyroiditis who showed evidence of upper airway obstruction on the flow volume loop only in the supine position. It is important to recognise as it may be missed during the conventional method of performing a pulmonary function test in sitting posture and also because surgical intervention should be considered in patients with tracheoesophageal compression due to a thyroid swelling.

Adult↗