When the human fingertip is pressed against a surface or bent, the hemodynamic state of the fingertip is altered due to mechanical interactions between the fingernail and bone. Normal force, shear force, and finger extension/flexion all result in different patterns of blood volume beneath the fingernail. This phenomenon has been exploited in order to detect finger forces and finger posture by c...

A 40-year-old man presented with massive pulmonary embolism related to diffuse large B cell lymphoma. His hemodynamic state worsened rapidly to shock after sudden onset of dyspnea. Echocardiography and thoracic computed tomography indicated pulmonary thromboembolism due to deep venous thromboembolism, associated with a mass in the anterior mediastinum and a 5 x 8 cm mass in the left pelvis comp...

The hemodynamic and antianginal effects of 30 mg of isosorbide dinitrate (ISDN) were assessed in 12 patients with chronic stable angina after initial dosing and after 7 to 10 days of therapy four times daily. During early therapy, ISDN produced significant hemodynamic and antianginal effects that persisted over a 3 hr observation period. During sustained therapy there was attenuation of the hem...

BACKGROUND Monitoring central hemodynamic responses to an orthostatic challenge may provide important insight into autonomic nervous system function. Oscillometric pulse wave analysis devices have recently emerged, presenting clinically viable options for investigating central hemodynamic properties. The purpose of the current study was to determine whether oscillometric pulse wave analysis can...

The acute hemodynamic effects of either ethacrynic acid or furosemide were studied in 27 patients who underwent diagnostic right and transseptal left heart catheterization. Twentythree patients had postcapillary pulmonary hypertension secondary to isolated or predominant mitral stenosis. Of these, 21 patients were in New York Heart Association functional class 111, and one each in class II and ...

PURPOSE To determine whether metabolic and hemodynamic parameters are "mathematically" coupled in rats submitted to portal triad occlusion following controlled hemorrhagic shock state. METHODS Pearson's coefficient (r-value) analysis was performed. Differences considered significant at p < 0.05 and -0.50 > r > 0.50. RESULTS It was observed that there is a direct proportional relationship to...

Patients with significant heart disease may have entirely normal hemodynamics when assessed in the resting state during cardiac catheterization. Because most cardiac symptoms are precipitated by exertion or some other stress, however, it also may be important to assess hemodynamic performance during some form of stress such as muscular exercise, pharmacologic intervention (e.g., dobutamine infu...

The hemodynamic and clinical data of 42 patients with chronic significant aortic regurgitation and 31 normal subjects were examined. Of the patients with aortic regurgitation, 28 had a third heart sound (S,) gallop and 14 did not. There was no significant difference in the severity of regurgitation between the patients with or without an S. gallop. However, all patients with an S, gallop had an...

Understanding the hemodynamic interactions of a non-cardiac system with the main circulatory system is a challenging task in modern medicine. In this study the effect of gastric myoelectric activity (GMA) on peripheral blood volume pulse, acquired by photoplethysmographic (PPG) technique during fasting and postprandial states are analyzed using wavelets. PPG and Electrogastrogram (EGG) signals ...