In deriving clinically used hemodynamic indices such as fractional flow reserve and coronary flow velocity reserve, simplified models of the coronary circulation are used. In particular, myocardial resistance is assumed to be independent of factors such as heart contraction and driving pressure. These simplifying assumptions are not always justified. In this review we focus on distensibility of...

In 14 consecutive patients with varying myocardial function, evaluation of the Valsalva maneuver was performed using aortic pulse pressure decay to investigate a possible quantitative relationship between the pattern of response and the degree of myocardial dysfunction. The aortic pulse pressure response during strain correlated with resting left ventricular end-diastolic pressure and pulmonary...

Background: Lumbar puncture (LP) and bone marrow aspiration or biopsy in pediatric patients with hematological diseases is often repeated at regular intervals. These procedures are painful and unpleasant and bring a lot of stress for the children and their families. This study aimed to compare the effectiveness of two drug combinations of propofol-ketamine and propofol-remifentanil in children ...

Background: Pyometra is defined as chronic purulent inflammation of the uterus that causes changes in hematological and biochemical parameters. The disease characterized with bacterial infection pus accumulation uterus. Transabdominal B-mode ultrasonography provides easy certain diagnosis this disease. hemodynamic pyometra are evaluated by Doppler ultrasonography. aim study to determine paramet...