BACKGROUND Intrapartum factors may have a role in the development of asthma and allergic diseases among offspring. OBJECTIVE To investigate the association between umbilical arterial pH values at birth and asthma, allergic rhinitis, and atopic eczema in children. METHODS We performed a case-control study of 222 asthmatic children and 183 control children aged 5 to 6 years with umbilical art...

BACKGROUND The serotonin system has repeatedly been associated with the pathogenesis of pulmonary hypertension (PH). OBJECTIVE To comparatively analyze plasmatic and intrathrombocytic serotonin levels in arterial and mixed venous blood of patients with PH and unaffected controls to elucidate pulmonary serotonin metabolisms. PATIENTS AND METHODS Catheters were placed in the radial and pulmon...

BACKGROUND Arterial blood gas (ABG) analysis is useful in evaluation of the clinical condition of critically ill patients; however, arterial puncture or insertion of an arterial catheter may cause many complications. The aim of this study was to determine whether venous blood gas (VBG) values can be used as an alternative to arterial blood gas measurements in patients under mechanical ventilati...

This study aimed to determine whether the vascular endothelial growth factor (VEGF) family members soluble VEGF receptor 1 (also called soluble fms-like tyrosine kinase 1 (sFlt-1)) and placental growth factor (PlGF) could be used as biomarkers for pulmonary hypertension (PH). Consecutive patients undergoing right heart catheterisation were enrolled (those with mean pulmonary arterial pressure ≥...

arterial blood gas parameters were analyzed in forty-nine healthy persons (31 males, 18 females) to detemine reference values fo these parameters and their relation to the time from last food intake to arterial puncture (t). the mean ± standard deviation of arterial oxygen pressure, arterial carbon dioxide pressure and ph at core body temperature were 84.4±7.0 mmhg (male: 83.0±6.5, female: 86.7...

It is generally accepted that hydrion concentration of the circulating arterial blood, serially examined in the same individual, is kept constant within a narrow limit of pH range1-4). However, it must be noted that there is some fluctuation in the concentration of alveolar CO2 during a respiratory cycle, and that this may lead to fluctuation in arterial pH. Though many studies have been made o...

Objective: To examine the relationship between newborn umbilical cord blood lactate and pH levels, mode of delivery and short-term neonatal outcome. Materials and methods: Umbilical cord arterial and venous lactate and pH values, mode of delivery, birth weight, gestational age, Apgar scores were extracted from the Obstetrix database at Nepean Hospital in Sydney. More than 7400 newborn cord bloo...

The study aims to identify the correlation between arterial and venous blood gas variables, in patients with metabolic acidosis secondary to renal failure and/or diabetic ketoacidosis(DKA). Paired arterial and venous blood samples of 100 patients, with metabolic acidosis resultant to renal failure and/or diabetic ketoacidosis during 2009-2011, were analyzed and the correlation between the varia...

Pulmonary regulation of acid-base balance operates by retention or elimina­ tion of C 0 2 through adjustment of ventilation. Ventilation is controlled by a chemoreflex system with receptors in (1) the carotid bodies, which sense the arterial pH and (2) a locus on the ventrolateral surface of the medulla which senses the pH of the CSF. The carotid bodies also sense arterial P 0 2, and this inter...