The hemorheological theory of optimal hematocrit suggests that the best value of hematocrit (hct) should be that which results in the highest value of the hematocrit/viscosity (h/η) ratio. Trained athletes compared to sedentary subjects have a lower hct, but a higher h/η, and endurance training reduces the discrepancy between the actual hct and the ⪡ideal⪢ hct that can be predicted with a theor...

Mục tiêu: Thẩm định phương pháp một số dòng máy theo dõi đường huyết nhanh (BGM) phổ biến dùng tại bệnh viện bằng cách tính toán độ chụm, chính xác và so sánh tiêu chuẩn CLSI POCT12-A31 đánh giá sự ảnh hưởng của hematocrit lên máy. Phương nghiên cứu: 135 phụ nữ mang thai, có chỉ thực hiện xét nghiệm dung nạp 75gr, đồng ý tham gia cứu phòng khám thai Bệnh Hùng Vương. Mỗi nhân được lấy máu ba lần...

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...

In this study, a biomimetic microfluidic plasma separation device is discussed. The design of the device drew inspiration from in vivo observations of enhanced cell-free layer (CFL) formation downstream of vascular bifurcations. The working principle for the plasma separation was based on the plasma skimming effect in an arteriolar bifurcation, which is modulated by CFL formation. The enhanceme...

BACKGROUND Priapism was associated with certain hematological parameters in sickle cell anemia (SCA) patients in one report but not in another. We studied differences in haematological parameters between SCA patients with and without priapism. PATIENTS AND METHODS Eighteen patients with SCA who presented with acute priapism during the years 2001-2004 were compared with age- and sex-matched SC...

Resistance to blood flow through peripheral vascular beds strongly influences cardiovascular function and transport to tissue. For a given vascular architecture, flow resistance is determined by the rheological behavior of blood flowing through microvessels. A new approach for calculating the contribution of blood rheology to microvascular flow resistance is presented. Morphology (diameter and ...

This study compared the effects on the kidney of two major determinants of blood viscosity, the hematocrit and the plasma colloid content. In anesthetized dogs, blood viscosity was raised 30% by increasing hematocrit or infusing isoncotic Dextran 500 while blood volume was kept constant. Neither form of hyperviscosity altered blood pressure, but both forms caused a decrease of about 35% in card...