BACKGROUND AND PURPOSE Tracer studies have demonstrated that 100% oxygen inhalation causes a small cerebral blood flow (CBF) decrease. This study was performed to determine whether arterial spin-labeling (ASL), a noninvasive MR imaging technique, could image these changes with clinically reasonable imaging durations. MATERIALS AND METHODS Continuous ASL imaging was performed in 7 healthy subj...

In mothers nursed in a semi-recumbent position, arterial oxygen tension was measured at the beginning and END OF AN an intermittent period of inhalation, Lasting for six contractions, during the first stage of labour. Ten mothers had methoxyflurane 0.35 per cent and air, followed by methoxyflurane 0.35 per cent with approximately 50 per cent oxygen. Another 10 mothers had 50 per cent nitrous ox...

although delivering of oxygen to patients seems to be easy, but this procedure can include some risks. in this article, we try to show you how this procedure can perform in a safe manner.   have you ever worked in a medical-surgical ward, or emergency department, or also in intensive care unit?   perhaps you ever have the care of patients who have need for supplemental oxygen. oxygen therapy is...

The effect of oxygen inhalation at atmospheric pressure and Naftidrofuryl infusion (N) on the TCpO2 is shown. At the central control site--5 cm below the midclavicular line--oxygen inhalation produced a significant increase in TCpO2, whereas there was no change after Naftidrofuryl infusion. At the 10 cm below-knee site, there were significant rises after oxygen inhalation alone, Naftidrofuryl a...

Understanding transportation and deposition (TD) of aerosol particles in the human respiratory system can help clinical treatment lung diseases using medicines. The airway diameters breathing capacity lungs normally increase with age until 30. Many studies have analyzed particle TD airways. However, knowledge nanoparticle airways infants children varying inhalation flow rates is still limited l...

Iloprost inhalation has recently emerged as an alternative therapy for severe primary pulmonary hypertension. In the studies documenting the effect of iloprost inhalation therapy, hemodynamic variables have been measured invasively. We have followed a patient with primary pulmonary hypertension receiving iloprost inhalation therapy for 5 years using echocardiography to monitor changes in pulmon...

PURPOSE The purpose of this study was to determine the influence of 40% nitrous oxide/60% oxygen inhalation with scavenging on the behavioral and physiological parameters during routine pediatric dental procedures. METHODS Twenty-two subjects, aged 60-116 months, were randomized into a double blind, cross-over study design and administered alternately either 40% nitrous oxide/60% oxygen or 10...

Blood-gas (Pao2) and hemodynamic responses to the inhalation of oxygen were studied in 60 patients with acute myocardial infarction. Patients who were not in heart failure on admission and did not develop signs of heart failure with n the next 5 days achieved the same Pa02 level while breathing 100% oxygen as did patients without acute myocardial infarction. Patients with pulmonary edema or car...