BACKGROUND Human brains show widespread necrosis when death occurs after coma due to cardiac arrest, but not after hypoxic coma. It is unclear whether hypoxia alone can cause brain damage without ischemia. The relationship of blood oxygenation and vascular occlusion to brain necrosis is also incompletely defined. METHODS We used physiologically monitored Wistar rats to explore the relationshi...

PURPOSE To compare arterial (PaO2) with capillary (PcO2) partial pressure of oxygen in hypoxemic COPD patients because capillary blood gas analysis (CBG) is increasingly being used as an alternative to arterial blood gas analysis (ABG) in a non-intensive care unit setting, although the agreement between PcO2 and PaO2 has not been evaluated in hypoxemic COPD patients. PATIENTS AND METHODS Blan...

Background. Pulmonary Alveolar Proteinosis (PAP) is a syndrome characterized by pulmonary surfactant accumulation. Small proportion of PAP patients experienced spontaneous remission. Objective. The aim of this study was to assess the severity and prognosis of PAP using various indexes. Methods. Characteristics, PaO2, lung function parameters, and HRCT score of 101 patients with PAP were retrosp...

Thirty patients who developed arterial hypertension following coronary artery bypass grafting, despite sedation, were treated randomly with sodium nitroprusside (SNP), ketanserin or urapidil. All drugs significantly decreased arterial pressure. Two patients were withdrawn because hypertension failed to respond to ketanserin. Significant tachycardia was noted only in the SNP group. An increase i...

Using current Medicare guidelines for the prescription of long-term oxygen therapy, we studied the impact on decision-making of substituting cutaneous oxyhemoglobin saturation measurements (SaO2) for direct arterial oxygen tension measurements (PaO2). Fifty-five patients with chronic lung disease and resting hypoxemia were studied. More than 80 percent of patients with a resting PaO2 of 7.33 kP...

Arterial blood and expired gas samples were taken from 20 patients before operation and on the first day after upper abdominal surgery. After operation the patients were studied breathing air and also breathing 35% oxygen from a venturi-type mask. Preoperative Pao2 with age was exaggerated by operation. Pao2 after operation was closely related to, and lower than, the preoperative value. The pos...

background respiratory failure is one of the most important related factors to morbidity and high mortality in neonates with congenital diaphragmatic hernia (cdh). determining indices that could ultimately and perceively predict the disease severity, prognosis and morbidity of these neonates is crucial. objectives this study aimed to evaluate the predictive value of pao2/fio2 ratio (p/f ratio) ...

BACKGROUND The effect of intranasal oxygen and/or early reversal of xylazine with atipamezole on arterial oxygenation in free-ranging moose (Alces alces) immobilized with etorphine-acepromazine-xylazine with a cross-sectional clinical study on 33 adult moose was evaluated. RESULTS Before treatment the mean±SD (range) partial pressure of arterial oxygen (PaO2) was 62±17 (26-99) mmHg. Twenty-si...

INTRODUCTION Hyperoxia has recently been reported as an independent risk factor for mortality in patients resuscitated from cardiac arrest. We examined the independent relationship between hyperoxia and outcomes in such patients. METHODS We divided patients resuscitated from nontraumatic cardiac arrest from 125 intensive care units (ICUs) into three groups according to worst PaO2 level or alv...