Gustavo Miranda Contreras

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It has been demonstrated that during pregnancy expiratory reserve volume (ERV) decreases and minute ventilation (VE) increases initially and then stabilizes. In order to determine the role of thoracoabdominal mechanics, control of breathing, and inspiratory muscle function in these alterations, we studied inspiratory pressures, lung volumes, thoracic(More)
Pulmonary function has been extensively studied in unilateral diaphragmatic paralysis (UDP), but there is scarce information regarding inspiratory muscle function in this condition. We therefore studied inspiratory muscle function in 8 patients with UDP (Group 1: age 48.3 +/- 2.1 yr of age, means +/- SD) as well as in 7 patients with UDP and concomitant(More)
1. The present study examines the effect of angiotensin11 (A11) on Cl- and Na+ transport in canine tracheal epithelium. 2. A concentration-dependent increase in the potential difference and in short-circuit current of the trachea was found. 3. Frusemide reduced values of Cl- dependent electrical parameters; net Cl- flux from serosa to mucosa accounted for(More)
We studied the effects of an 8-h, once-a-week schedule of cuirass ventilation (CV) in 5 patients with advanced chronic air-flow limitation and chronic hypercarbia (PaCO2, 58.6 +/- 10.1 mm Hg; mean +/- SD). Repeated measurements of arterial blood gases, maximal inspiratory mouth pressure (P1max), 12-min walking distance, and respiratory cycle were performed(More)
UNLABELLED To evaluate the clinical impact of the use of an indirect immunofluorescence assay (IFA) against Chlamydia as a method to identify patients with tubal factor infertility (TFI) in a population of infertile Mexican women. METHODS This was a retrospective analysis made on 100 patients attending the infertility clinic who underwent laparoscopy.(More)
In this work we present data which show stimulation of Cl- transport in the isolated toad skin by four agonists: L-isoproterenol, L-adrenalin, angiotensin II and ADH. This response was demonstrated by raising mucosal amiloride concentration to block the sodium transport in the skin. With transepithelial sodium influx almost completely inhibited, it was(More)
Calves develop nasal and salivary neutralizing antibodies against foot-and-mouth disease virus after nasal inoculation with live virus. Nasal and salivary antibody was not detected after exposure to inactive virus. Serum antibodies were induced by live and inactive virus given subcutaneously. Passively acquired antibodies were detected as long as 7 months(More)
1. Values of the sodium potential (ENa), active conductance (GNa) and passive conductance (Gsh) were measured in the isolated skin of the toad Pleurodema thaul placed in an Ussing chamber, and Isaacson's test was performed with 2,4,6-trieminopyrimidine (TAP) and with amiloride. 2. The numerical estimates obtained in the presence of TAP were ENa 122.85 +/-(More)