BACKGROUND Blood for point-of-care analysis of glucose levels is often obtained from different sources (fingerstick, arterial or central venous catheter). OBJECTIVES To examine agreement between point-of-care and laboratory glucose values and to determine effects of hematocrit, serum carbon dioxide, and mean arterial pressure on the accuracy of point-of-care values. METHODS Point-of-care va...

The effect of isovolemic hemodilution on red blood cell flow distribution was studied in complete self-contained microvessel networks of the rat mesentery. Hematocrit, diameter, and length of all vessel segments as well as the topological structure were determined in control networks (systemic hematocrit, 0.54) and after hemodilution (systemic hematocrit, 0.30). Hemodilution was performed by ex...

We propose an extension of the expectation-maximization (EM) algorithm, called the hyperpenalized EM (HEM) algorithm, that maximizes a penalized log-likelihood, for which some data are missing or unavailable, using a data-adaptive estimate of the penalty parameter. This is potentially useful in applications for which the analyst is unable or unwilling to choose a single value of a penalty param...

Microvascular hematocrit and its possible relation to oxygen supply were systematically examined. We studied the red cell volume fraction (hematocrit) in arterial blood and in capillaries under a variety of circumstances. Control capillary hematocrit averaged 10.4 +/- 2.0% (SE) and arteriolar (14.2 micrometer ID) hematocrit averaged 13.9 +/- 1.2% in cremaster muscles of pentobarbital-anesthetiz...

The purpose of this study is to examine the relationship between mortality and stay times in intensive care and hematocrit value as of the time of application with trauma scores and hemodynamic measurements in patients with thorax and abdominal injuries due to stab wounds in the intensive care unit. Sosyodemographic data, vital signs, blood parameters, characteristics of injuries recorded and G...

BACKGROUND The oxygen saturation of haemoglobin is reduced in high altitude-living organisms. Increase in the hematocrit is responsible for rise in the hemoglobin concentration so that the oxygen carrying capacity in the hypobaric hypoxic subject is elevated. OBJECTIVES To compare two different high altitude populations, in order to study the relationship between arterial oxygen saturation an...

The article entitled "Hematocrit Compensation in Electrochemical Blood Glucose Monitoring Systems" by Teodorczyk and colleagues in this issue of Journal of Diabetes Science and Technology demonstrates that the OneTouch(®) Verio™ glucose meter meets current regulatory expectations for glucose meter performance and is relatively free from interference by hematocrit. The lack of influence of hemat...

background: preeclampsia is the most prevalent complication of pregnancy and one ihird cause of death in pregnant women. developing of a screening test may help to early diagnosis. this study performed to compare diagnostic value of the roll over test and hematocrit level in early detection of preeclampsia.        methods: 660 pregnant women with gestational age of 24-28 weeks referred totamin ...

Background: Anemia is common throughout the world, remarkably in developing countries. Our aim is to calculate normal hemoglobin and other hematological indices in southwest of Iran. Materials and Methods: A random selection of 500 healthy males and 500 healthy females was done in the age group of 13 to 65 years. A complete blood count (CBC) was performed in all participants. Results: Hemoglobi...

Measuring blood hematocrit noninvasively is reviewed in this paper. Although there is an inclination to measure the hematocrit by determining the bioelectrical impedance of the blood, in vitro experimental methods still remain practically inapplicable. The blood sample size is determined when blood samples are examined. Determining the impedance and volume of blood is the biggest challenge in m...