Recurrent venous thrombosis presents a diagnostic challenge. Venography, impedance plethysmography and fibrinogen leg scanning all have potential limitations, and their role in this context has not been evaluated. We performed a prospective cohort study evaluating impedance plethysmography and leg scanning, plus venography, using outcome on long-term follow-up as the end point in 270 patients w...

The incidence of asthma and obesity is constantly increasing. It commonly acknowledged that can make more severe poorly controlled. Conventional spirometry, despite being a “gold standard” in diagnostics lung diseases, cannot provide information on residual volume bronchial resistance, which be key to understanding the mechanics spirometric deviations found asthma-obesity phenotype. aim. To eva...

Objective. This paper illustrates the evolution of our knowledge of the arterial pulse from ancient times to the present. Several techniques for arterial pulse evaluation throughout history are discussed. Methods. Using databases including Worldcat, Pubmed, and Emory University Libraries' Catalogue, the significance of the arterial pulse is discussed in three historical eras of medicine: ancien...

Methods of indirectly determining blood pressure in the rat are reviewed and their drawbacks noted. A new method is described which has the advantage of objectivity and provides permanent graphic record of each determination. The end point used is the reappearance of pulsation in the foot distal to a slowly deflating leg cuff. Application of the method is described and its use compared with tai...

We investigated a non-invasive measurement for changes in finger blood flow during wakefulness and sleep. Changes in finger blood flow, reflected by pulse wave amplitude (PWA) derived from finger plethysmography, were compared with changes in forearm vascular flow assessed by venous occlusion plethysmography after intra-arterial infusion of norepinephrine (NE), phentolamine, and isoproterenol (...

The assessment of sexual arousal and sexual interest patterns have become significant elements in the detection and treatment of sexual disorders. This study investigated whether there was a relationship between sexual interest (utilizing viewing time) and sexual arousal (utilizing plethysmography) in a clinical sample of sexual offenders with diagnosed pedophilic interests. Thirty nine partic...

There are various ways of measuring absolute lung volume. These range from measurements derived from chest radiographs to the more common laboratory measurements employing either gas dilution or plethysmography. The principal difference between the latter two methods is that gas dilution techniques measure gas that is in free communication with the airway opening, whilst plethysmography measure...

Calf venous compliance improves with aerobic training and declines with age. Individuals with hypertension often have decreased arterial and venous compliance. Acute high consumption of NaCl may increase net transcapillary fluid filtration in the limbs, but it is unknown if this acutely high NaCl intake will alter non-invasive assessment of calf venous compliance. In humans, assessment of limb ...

BACKGROUND Computerised x-ray planimetry has been advocated as an alternative to body plethysmography and helium dilution for measuring static lung volumes. The accuracy and reproducibility of this method has been assessed in comparison with these standard methods. METHODS Plethysmographic and planimetric measurements of total lung capacity (TLC) and functional residual capacity (FRC) were ma...

We validated a noninvasive radionuclide plethysmography technique to evaluate peripheral arterial blood flow during reactive hyperemia. This method, based on the measurement of blood volume variations during repetitive venous occlusions, was compared with strain-gauge venous impedance plethysmography. The technique uses 99mTc-labeled autologous red blood cells scintigraphy to determine the rate...