نتایج جستجو برای: o2 saturation

تعداد نتایج: 72520  

Journal: :European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery 1998
A Sidiropoulos J Ritter M Schneider W Konertz

OBJECTIVE Establishment of Fontan circulation in complex univentricular hearts often requires several surgical procedures. We developed a procedure which maintains the advantages of a staged approach, however, during the initial surgery additional preparatory measures are performed to allow subsequent non-surgical Fontan completion. METHODS The operation is a lateral baffle Fontan procedure. ...

Journal: :American journal of physiology. Heart and circulatory physiology 2003
Amy G Tsai Kim D Vandegriff Marcos Intaglietta Robert M Winslow

To assess O2 delivery to tissue by a new surface-modified, polyethylene glycol-conjugated human hemoglobin [MP4; Po2 at 50% saturation of hemoglobin (P50); 5.4 mmHg], we studied microcirculatory hemodynamics and O2 release in golden Syrian hamsters hemodiluted with MP4 or polymerized bovine hemoglobin (PolyBvHb; P50 54.2 mmHg). Comparisons were made with the animals' hemodiluted blood with a no...

Journal: :Journal of applied physiology 2005
C S Fulco K W Kambis A L Friedlander P B Rock S R Muza A Cymerman

Carbohydrate supplementation (CHOS) typically improves prolonged time-trial (TT) performance at sea level (SL). This study determined whether CHOS also improves TT performance at high altitude (ALT; 4,300 M) despite increased hypoxemia and while in negative energy balance (approximately 1,250 kcal/day). Two groups of fasting, fitness-matched men performed a 720-kJ cycle TT at SL and while livin...

2006
Morten S. Frederiksen Ronnie N. Glud

The oxygen dynamics in the rhizosphere of Zostera marina was studied by use of planar optodes. Oxygen leakage to the rhizosphere was restricted to the root tip and extended only up to ;8 mm up along the root. The oxic sediment volume around the roots increased linearly with irradiance in the interval of 0–250 mmol photons m22 s21, but the leakage rate saturated at the maximum irradiance of 500 ...

Journal: :The Laryngoscope 2015
Brian Rotenberg Jenna Theriault Horace Cheng John Fuller

OBJECTIVE/HYPOTHESIS Evidence is lacking to guide whether patients with obstructive sleep apnea (OSA) require mandatory postoperative monitoring when undergoing multilevel sleep surgery. The purpose of this study was to examine the respiratory complication rate following OSA surgery and identify which patients benefit from monitoring after surgery. STUDY DESIGN A prospective study was conduct...

اسماعیلی, الهام , حسنی, ابراهیم , سینایی, بهزاد , ماهوری, علیرضا , نوروزی‌نیا, حیدر ,

Background: Pulseoximetry is widely used in the critical care setting, currently used to guide therapeutic interventions. Few studies have evaluated the accuracy of SPO2 (puls-eoximetry oxygen saturation) in intensive care unit after cardiac surgery. Our objective was to compare pulseoximetry with arterial oxygen saturation (SaO2) during clinical routine in such patients, and to examine the eff...

Journal: :iranian journal of medical sciences 0
seiyed mohammad ali ghayumi department of internal medicine, nemazee hospital, shiraz university of medical sciences, shiraz, iran mohammad javad fallahi department of internal medicine, nemazee hospital, shiraz university of medical sciences, shiraz, iran; ali reza moarref cardiovascular research center, faghihi hospital, shiraz university of medical sciences, shiraz, iran

background: it was hypothesized that the use of pentoxifylline would increase arterial o2 saturation and increase exercise tolerance in patients with chronic obstructive pulmonary disease (copd). methods: we tested this hypothesis in 23 patients with copd and pulmonary hypertension. patients were randomized to receive pentoxifylline or placebo, each for a 12-week period, in a prospective, doubl...

Journal: :international journal of pediatrics 0
ali ghasemi assistant professor of pediatric hematology and oncology, faculty of medicine, mashhad university of medical sciences, mashhad, iran.

background  multiple procedures (lumbar puncture and bone marrow aspiration /biopsy) cause pain, stress, depression and etc for the patients and their families. various methods have been recommended for pain reduction during invasive procedures. the aim of this study is to report the complications following general anesthesia. methods in this prospective observational study, two hundred and two...

Journal: :Respiration physiology 1996
C J Brauner K M Gilmour S F Perry

CO2 excretion in trout is dependent upon the Haldane effect and the release of protons (Bohr protons) from haemoglobin during oxygenation of the blood. Oxygenation of whole blood from trout in vitro, resulted in a non-linear release of Bohr protons over the haemoglobin-oxygen (Hb-O2) equilibrium curve, where the majority of Bohr protons were released between 60 and 100% of Hb oxygen saturation ...

2001
Alberto V. Borges Michel Frankignoulle

The partial pressure of CO2 (pCO2) and dissolved oxygen saturation level (%O2) were monitored continuously during a cruise in August 1998, which sampled surface waters off the Galician coast. Data are presented from two Lagrangian experiments carried out in an upwelling on the continental shelf and in the core of an offshore filament. The data show that daily variations in surface pCO2 and oxyg...

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