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In anesthetized cats, with vagi cut and the spinal cord severed at the C8 level, phrenic motor and/or sensory discharge was recorded. Small afferent phrenic fibers were identified through their activation by lactic acid, hyperosmotic NaCl solution, or phenyl diguanide. They exhibited a spontaneous but irregular low-frequency discharge. Block of their(More)
INTRODUCTION Current diagnostic criteria of Alzheimer Disease (AD) are mainly based on clinical definition. In France, the Delayed Matching Sample (DMS48) test, a recently introduced test that explores visual object recognition, is recommended for the early diagnosis of AD. However, little is known on the DMS48 performances of older subjects over 75 years.(More)
The effects of elastase-induced emphysema on vagal pulmonary reflexes were studied in seven rabbits, given 600 IU of porcine pancreatic elastase intratracheally (E group), and eight untreated rabbits (U group) under pentobarbital anaesthesia. The presence of emphysema was confirmed by histological and pathological criteria and by documented changes in lung(More)
BACKGROUND Mechanical ventilation using tidal volumes around 10 ml/kg and zero positive end-expiratory pressure is still commonly used in anesthesia. This strategy has been shown to aggravate lung injury and inflammation in preinjured lungs but not in healthy lungs. In this study, the authors investigated whether this strategy would result in lung injury(More)
OBJECTIVE To test the effects of high-frequency percussive ventilation (HFPV) compared with high-frequency oscillatory ventilation (HFOV) and low-volume conventional mechanical ventilation (LVCMV), on lung injury course in a gastric juice aspiration model. DESIGN Prospective, randomized, controlled, in-vivo animal study. SETTING University animal(More)
The measurement of the forced expiratory volume in one second (FEV1) after a maximal inspiration is often used to assess the effect of inhaled bronchoconstrictor agents. In persons with asthma, a deep inspiration transiently alters the bronchial tone in a variable way. This may result in a variable decrease of FEV1 despite a similar degree of(More)
The pulmonary function of patients receiving autologous or allogeneic bone marrow transplantation (BMT) was studied before, 100 days after and 1 year after BMT. The 117 patients studied before transplantation showed a slight reduction in average total lung capacity (TLC) and transfer coefficient (KCO). These reductions were related to haematological(More)
We investigated the potential inflammatory reaction induced by mechanical ventilation (MV) using 10 ml/kg tidal volume and no positive end-expiratory pressure (PEEP) in control (C, n = 8), spontaneously breathing (SB, n = 12) and mechanically ventilated (MV, n = 12) rabbits with normal lungs. After 6 h (MV and SB groups) or immediately (C group), lungs were(More)
1. In eighteen anaesthetized cats, action potentials in non-myelinated vagal afferent neurones were recorded in the nodose ganglion by means of extracellular micro-electrodes. 2. The pulmonary or bronchial origin of these C fibres was assessed in closed chest preparations by injecting phenyl diguanide into either the right atrium or the ascending aorta(More)