Search results for "Respiratory Conditions Disorder and Diseases"

showing 2 items of 2 documents

Breathing 100% oxygen during water immersion improves postimmersion cardiovascular responses to orthostatic stress

2016

Abstract Physiological compensation to postural stress is weakened after long‐duration water immersion (WI), thus predisposing individuals to orthostatic intolerance. This study was conducted to compare hemodynamic responses to postural stress following exposure to WI alone (Air WI), hyperbaric oxygen alone in a hyperbaric chamber (O 2 HC), and WI combined with hyperbaric oxygen (O 2 WI), all at a depth of 1.35 ATA, and to determine whether hyperbaric oxygen is protective of orthostatic tolerance. Thirty‐two healthy men underwent up to 15 min of 70° head‐up tilt (HUT) testing before and after a single 6‐h resting exposure to Air WI ( N  = 10), O 2 HC ( N  = 12), or O 2 WI ( N  = 10). Heart …

AdultMalemedicine.medical_specialtyCardiac outputPhysiologyDivingOrthostatic intoleranceHemodynamicsBlood PressureNeurological Conditions Disorders and Treatments03 medical and health sciencesOrthostatic vital signs0302 clinical medicinePhysiology (medical)Internal medicineHeart rateImmersionMedicineAutonomic nervous systemblood flowHumansOriginal ResearchPresyncopeRespiratory Conditions Disorder and DiseasesHyperbaric Oxygenationbusiness.industryRespirationheart rate variabilityHeartStroke Volume030229 sport sciencesmedicine.diseaseSurgeryOxygenmedicine.anatomical_structureBlood pressureAutonomic nervous system; Blood flow; Blood pressure; Heart rate variability; Hyperoxia; Orthostatic tolerance; Water immersion; Adult; Diving; Humans; Hyperbaric Oxygenation; Immersion; Male; Orthostatic Intolerance; Oxygen; Vascular Resistance; Blood Pressure; Respiration; Stroke Volume; Physiology; Physiology (medical)Settore ING-INF/06 - Bioingegneria Elettronica E InformaticaVascular resistanceCardiologyOrthostatic Intolerancehyperoxiawater immersionorthostatic toleranceVascular Resistancebusiness030217 neurology & neurosurgeryHumanPhysiological Reports
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Pressure-decay testing of pleural air leaks in intact murine lungs: evidence for peripheral airway regulation.

2018

Abstract The critical care management of pleural air leaks can be challenging in all patients, but particularly in patients on mechanical ventilation. To investigate the effect of central airway pressure and pleural pressure on pulmonary air leaks, we studied orotracheally intubated mice with pleural injuries. We used clinically relevant variables – namely, airway pressure and pleural pressure – to investigate flow through peripheral air leaks. The model studied the pleural injuries using a pressure‐decay maneuver. The pressure‐decay maneuver involved a 3 sec ramp to 30 cmH20 followed by a 3 sec breath hold. After pleural injury, the pressure‐decay maneuver demonstrated a distinctive airway…

Malemedicine.medical_specialtyPhysiologyinjurymedicine.medical_treatment030204 cardiovascular system & hematology03 medical and health sciences0302 clinical medicineControl of BreathingPhysiology (medical)Internal medicinemedicineAnimalsLung volumesLungOriginal ResearchMechanical ventilationAir PressureRespiratory Conditions Disorder and DiseasesLungbusiness.industryventilationLung Injuryrespiratory systemAir leakPeripheralrespiratory tract diseasesMice Inbred C57BLmedicine.anatomical_structure030228 respiratory systemControl of respirationBreathingCardiologyRespiratory MechanicsPleuraAirwaybusinessTranspulmonary pressurePhysiological reports
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