A new formula based on height for determining endotracheal intubation depth in pediatrics: A prospective study.

Study Objective: The main objective was to devise an endotracheal intubation formula based on pediatric patients' strongly correlated growth parameters. The secondary objective was to compare the accuracy of the new formula to the age-based formula from Advanced Pediatric Life Support Course (APLS formula) and the middle finger length-based formula (MFL-based formula).

Design: A prospective, observational study.

Emergency Airway Management in Patients with COVID-19: A Prospective International Multicenter Cohort Study.

Background: Tracheal intubation for patients with COVID-19 is required for invasive mechanical ventilation. The authors sought to describe practice for emergency intubation, estimate success rates and complications, and determine variation in practice and outcomes between high-income and low- and middle-income countries. The authors hypothesized that successful emergency airway management in patients with COVID-19 is associated with geographical and procedural factors.

Levels of miR-125a-5p are altered in Mycobacterium avium-infected macrophages and associate with the triggering of an autophagic response.

Macrophages are major pathogen-killing cells. Mycobacteria can represent a serious threat to human health, in particular Mycobacterium tuberculosis and, less so, the opportunistic Mycobacterium avium. They can cause disseminated infections because of their capacity to survive and proliferate within macrophage phagolysosomes.

Bosentan affects 15-F2t-isoprostane adverse effects on postischemic rat hearts.

Background: 15-F(2t)-isoprostane (IsoP), a marker of reactive oxygen species-induced oxidative stress, is increased after myocardial ischemia and reperfusion. It exerts deleterious effects on postischemic myocardium accompanied with increased release of endothelin-1 (ET-1), a potent vasoconstrictor. We hypothesized that IsoP exacerbates myocardial ischemia-reperfusion injury by stimulating ET-1 production, and that ET-1 blockade can attenuate or prevent these deleterious effects of IsoP.

[Effect of tryptase inhibitors on histamine release from human colon mast cells].

Aim: To investigate the effect of tryptase inhibitors (TPIs) on histamine release from human colon mast cells.

Methods: Human mast cells were prepared by digestion of colon tissue and with collagenase and hyaluronidase, cultured with four kinds of TPIs, leupeptin, protamine, TLCK, and lactoferrin for 15 min at 37 degrees Celsius respectively. A glass fibre-based fluorometry assay was used to detect histamine in mast cell suspension.

[Effects of extracellular signal-regulated kinase inhibition by AG126 on tissue tumor necrosis factor-alpha expression and multiple organ dysfunction in rats with postburn Staphylococcus aureus sepsis].

Objective: To investigate the effects of extracellular signal-regulated kinase (ERKs) inhibition by AG126 on tissue tumor necrosis factor-alpha (TNF-alpha) expression and multiple organ dysfunction in rats with postburn Staphylococcus aureus sepsis and its potential signal regulating mechanism.

Methods: To reproduce postburn sepsis model, male Wistar rats were inflicated with 20% total body surface area third-degree scald followed by Staphylococcus aureus challenge. 34 rats were randomly divided into four groups as follows: normal control group (n = 6), scald control group (n = 6), postburn sepsis group (n = 12), and AG126 treatment group (n = 10).

[Changes in Toll-like receptor 2 and 4 gene expression in vital organs in septic rats and their regulation mechanisms].

Objective: To investigate the changes in Toll-like receptor (TLR) 2 and 4 gene expression in vital organs in septic rats and their potential regulation mechanism.

Methods: One hundred Wistar rats were randomly divided into normal controls (n=10), sham-operated group (n=10), septic group (n=60), and recombinant bactericidal/permeability increasing protein (BPI)-treated group (n=20). Severe sepsis was replicated by cecal ligation and puncture (CLP).

[Effects of esmolol and fentanyl on the hemodynamic and catecholamine response to tracheal intubation in hypertensive patients].

Objective: To compare effects of esmolol and fentanyl on the hemodynamic and catecholamine response to tracheal intubation in hypertensive patients.

Methods: Sixty hypertensive patients were randomly allocated into one of four groups: the patients received 0.9% saline in group A, 2 mg/kg esmolol in group B, 2 microg/kg fentanyl in group C and 2 mg/kg esmolol combined with 2 microg/kg fentanyl in group D before intubation.