treatable with standard mycobacterial chemotherapy), and groups 2a and 2b (difficult to treat with usual mycobacterial therapy). Functionally, this seems to be a practical way for clinicians who do not frequently encounter these many microbes to keep track of the clinical importance of isolates. However, I am concerned about the predictable overlap of the old classification system of Runyon wit...

A gas washout technique was used to measure the functional residual capacity (FRC) in eight patients during anaesthesia for cardiac surgery. The patients were anaesthetized with droperidol, fentanyl and nitrous oxide, alcuronium was given and the lungs were ventilated with a volume controlled ventilator. FRC was measured at three stages before skin incision, after sternotomy but before cardiopu...

treatable with standard mycobacterial chemotherapy), and groups 2a and 2b (difficult to treat with usual mycobacterial therapy). Functionally, this seems to be a practical way for clinicians who do not frequently encounter these many microbes to keep track of the clinical importance of isolates. However, I am concerned about the predictable overlap of the old classification system of Runyon wit...

BACKGROUND Sighing breathing is observed in subjects suffering from anxiety with no apparent organic disease. METHODS Lung volumes and expiratory flow rates were measured in 12 patients with a sighing pattern of breathing and in 10 normal subjects matched for age, gender, and anthropometric data. In both groups the measurements were made by spirographic and plethysmographic techniques. In nor...

Twelve healthy term infants were examined at the median ages of 2 1/2 and 26 hours. Their alveolar ventilation, efficiency of ventilation, functional residual capacity, and lung nitrogen elimination patterns were studied by means of a computerised nitrogen wash out method. The results showed that alveolar ventilation and functional residual capacity increased over the period studied. At the sam...

Ten intubated neonates (weights 0.90 to 2.58 kg) recovering from respiratory disease had lung mechanics, respiratory patterns, and functional residual capacity measured at 0 cmH2O continuous positive airways pressure and then after application of serially increasing levels of external expiratory resistance. At an external expiratory resistance greater than 40 cmH2O/1 per second, there was a sig...

Human lung volumes and the mechanisms that set them. D.E. Leith, R. Brown. #ERS Journals Ltd 1999. ABSTRACT: Definitions of human lung volumes and the mechanisms that set them are reviewed in the context of pulmonary function testing, with attention to the distinction between functional residual capacity (FRC) and the static relaxation volume of the respiratory system, and to the circumstances ...