bacteremia/hypoxia

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Influence of hypoxia on bacteremia in the Dungeness crab, Cancer magister.

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We examined the possibility that decreased environmental oxygen can elevate the levels of indigenous bacteria in the hemolymph of Cancer magister. Crabs were exposed to air-saturated and hypoxic (50% air-saturation) water for 3 days and levels of culturable bacteria in hemolymph were measured every

Cerebral Abscess Associated With Odontogenic Bacteremias, Hypoxemia, and Iron Loading in Immunocompetent Patients With Right-to-Left Shunting Through Pulmonary Arteriovenous Malformations.

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Cerebral abscess is a recognized complication of pulmonary arteriovenous malformations (PAVMs) that allow systemic venous blood to bypass the pulmonary capillary bed through anatomic right-to-left shunts. Broader implications and mechanisms remain poorly explored. Between June 2005 and December

Evaluation of leukocytosis, bacteremia, and portal vein partial oxygen tension in clinically normal dogs and dogs with portosystemic shunts.

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OBJECTIVE To assess the relationship of WBC counts and partial oxygen tension in the portal vein and caudal vena cava with portal bacteremia, bacteria in the liver, and postoperative morbidity and mortality in dogs with portosystemic shunts. METHODS Prospective study. METHODS 12 clinically normal

Bacteremia: host-specific lung clearance and pulmonary failure.

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Pulmonary effects, lung clearance, and tissue retention of blood-borne Pseudomonas aeruginosa were compared in dogs (n = 5) and pigs (n = 5) during continuous 6-hour intravenous infusion of 1.2(10(9)) bacteria/min/20 kg. Control pigs received an equal volume of sterile saline. In contrast to

Preterm labor and maternal hypoxia in patients with community-acquired pneumonia.

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OBJECTIVE We sought to determine if preterm labor is associated with the degree of maternal hypoxia in pregnant women with community-acquired pneumonia but no other maternal diseases. METHODS We retrospectively reviewed the medical records of all antepartum patients admitted with a diagnosis of

Factors Associated with Streptococcal Bacteremia in Diarrheal Children under Five Years of Age and Their Outcome in an Urban Hospital in Bangladesh.

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Although Streptococcal bacteremia is common in diarrheal children with high morbidity and mortality, no systematic data are available on Streptococcal bacteremia in diarrheal children. We sought to evaluate the factors associated with Streptococcal bacteremia in diarrheal children under five years

Prolonged venovenous extracorporeal membrane oxygenation in a child with leukemia and persistent bacteremia.

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OBJECTIVE In patients who require extracorporeal membrane oxygenation for prolonged periods, it is uncertain whether nosocomial bacteremia that persists throughout an entire extracorporeal membrane oxygenation run can be associated with good outcomes. METHODS Case report. METHODS Tertiary pediatric

Isogenic group B streptococci devoid of capsular polysaccharide or beta-hemolysin: pulmonary hemodynamic and gas exchange effects during bacteremia in piglets.

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Group B beta-hemolytic streptococcus (GBS) causes thromboxane (Tx)-associated pulmonary hypertension and hypoxemia in neonatal animals and human infants. The components of GBS that induce these features of sepsis are incompletely characterized. The capsular polysaccharide has been implicated based

Sepsis--the Wayne State University Symposium--part III. Bacteremia and endotoxemia: a discussion of their roles in the pathophysiology of gram-negative sepsis.

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Bacteremia, or the presence of live bacteria in the bloodstream, does not seem a prerequisite for septic shock. Indeed, only a small portion of all patients who sustain gram-negative bacteremia ever develop the shock syndrome. Endotoxin in the laboratory model is capable of producing a number of

Platelet-activating factor and bacteremia-induced pulmonary hypertension.

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BACKGROUND Acute lung injury is a common complication of gram-negative sepsis. Pulmonary hypertension and increased lung vascular permeability are central features of lung injury following experimental bacteremia. Platelet-activating factor is a prominent proinflammatory mediator during bacterial

Brief hypoxia differentially regulates LPS-induced IL-1beta and TNF-alpha gene transcription in RAW 264.7 cells.

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Episodes of tissue hypoxia and reoxygenation frequently occur during gram-negative bacteremia that progresses to septic shock. However, few studies have evaluated modulation by hypoxia and reoxygenation of the proinflammatory cytokine gene expression that is normally induced by gram-negative

Hypoxia-induced intestinal barrier changes in balloon-assisted enteroscopy.

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CONCLUSIONS Balloon-assisted enteroscopy (BAE) is an emerging standard procedure by utilizing distensible balloons to facilitate deep endoscopy in the small and large intestine. Sporadic cases of bacteraemia were found after BAE. Balloon distension by BAE caused gut tissue hypoxia. The impact of

Downregulation of E. coli-induced TNF-alpha expression in perfused liver by hypoxia-reoxygenation.

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We tested the hypothesis that reducing the hepatic O2 supply by 30 min of constant-flow hypoxia (PO2, approximately 45 Torr) following gram-negative bacteremia downregulates tumor necrosis factor-alpha (TNF-alpha) in buffer-perfused rat lives (total n = 44). Eight groups were studied after

Predictors of Bacteraemia in Patients with Suspected Community-Acquired Pneumonia.

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BACKGROUND The diagnostic yield of blood cultures is limited in patients with community-acquired pneumonia (CAP). Yet, positive blood culture results provide important information for antibiotic treatment and for monitoring epidemiologic trends. We investigated the potential of clinical predictors

Thromboxane-associated pulmonary hypertension during three types of gram-positive bacteremia in piglets.

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Thromboxane-associated pulmonary hypertension occurs in animals during intravenous infusion of group B streptococcus (GBS), a gram-positive neonatal pathogen. We postulated that other gram-positive neonatal pathogens, such as Streptococcus fecalis (ENT) and Staphylococcus epidermidis (S. epi) would

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