OBJECTIVE To determine the incidence of pelvic unleveling, foot rotation, and supine leg length alignment asymmetry in a nonclinical population and to examine the validity (sensitivity, specificity, positive and negative predictive values) of these visual tests and their relationship to self-reported back pain. DESIGN Volunteers answered a questionnaire regarding back pain and were then exami...

PURPOSE To characterize 24-hour variation of intraocular pressure (IOP) in healthy young adults based on the axial length of the eye. METHODS Twenty-four-hour IOP data were collected from nine healthy young adults with hyperopia, age range 18 to 25 years, in a sleep laboratory. Every 2 hours, measurements of IOP were taken in the participants after 5 minutes in the supine position and 5 minut...

background : since the use of high concentrations of oxygen in infants may lead to chronic lung problems, using proper methods of care in infants under mechanical ventilation is one of the most important measures in nicu. this study aimed to investigate the effects of prone and supine positions on oxygenation (spo 2 ) in premature infants under mechanical ventilation and comparing infants’ oxyg...

Both in normal subjects exposed to hypergravity and in patients with acute respiratory distress syndrome, there are increased hydrostatic pressure gradients down the lung. Also, both conditions show an impaired arterial oxygenation, which is less severe in the prone than in the supine posture. The aim of this study was to use hypergravity to further investigate the mechanisms behind the differe...

BACKGROUND It is a common practice to anesthetize patients before performing a thoracentesis. We postulated that this technique may cause a clinically significant difference in the pH of the pleural fluid. METHODS We compared two methods of determining pleural fluid pH. Fifty patients undergoing diagnostic or therapeutic thoracentesis were enrolled. Two 4-mL aliquots of pleural fluid were ana...

OBJECTIVE Thoracentesis is the first investigation to be performed in a patient with lung cancer and pleural effusion. The diagnostic yield of conventional smear studies varies in the first thoracentesis. In this study, we aimed to investigate if the cell block method increases the diagnostic yield in exudative pleural effusions accompanying lung cancer. MATERIAL AND METHOD Forty patients wit...

Pulmonary extravascular (PEW) and intravascular (PBV) fluid volumes were measured during cardiac catheterization by a multiple indicator-dilution technique in 21 cardiac patients at rest and during exercise. Increased PEW at rest was clearly related to increased left atrial and pulmonary artery pressures but not to blood flow or pulmonary vascular resistance. Submaximal supine exercise produced...

To evaluate the relationships between sympathetic nerve activity, insulin sensitivity, and blood pressure (BP) elevation, we examined BP, fasting blood glucose, plasma insulin, and norepinephrine (NE) levels in age- and body mass index (BMI)-matched 662 normotensive (NT) and 188 borderline hypertensive (BHT) subjects every year for 10 years. All measurements were taken in the supine position af...

Mineralocorticoid-treated, normotensive third trimester subjects positioned in lateral recumbency were studied before and during the infusion of 300 mEq of hypotonic saline. Urinary sodium excretion increased in all subjects from a mean value of 199 to 416 muEq/min. In 12 maximally hydrated subjects free water clearance (C(H2O)) and urine flow (V) increased from means of 7.54 and 9.50 to 11.6 a...

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