The objective of the present study is to extract new information from complex signals generated by Respiratory Inductive Plethysmography (RIP). This indirect cardio-respiratory (CR) measure is a well-known wearable solution. We applied time-scale analysis to estimate cardiac activity from thoracic volume variations, witnesses of CR interactions. Calibrated RIP signals gathered from 4 healthy vo...

An attempt was made to analyze differences in the results obtained by various kinds of finger plethysmography, such as penetration photo-electric plethysmograph (penet.-PTG), reflexion photo-electric PTG (refl.-PTG), mechanoelectric PTG (pneumo-PTG and hydro-PTG) and impedance PTG, by taking simultaneous recordings principally from the same finger tip. Comparisons of the time course (onset time...

The effect of hypobaric spinal anaesthesia or narcotic-halothane-relaxant general anaesthesia on the incidence of postoperative deep vein thrombosis was studied in 140 elective total hip replacements in a prospective randomised manner. Deep vein thrombosis was diagnosed using impedance plethysmography and the 125I fibrinogen uptake test, combined, in selected cases, with ascending contrast veno...

In this issue of the journal, Bogaard et al. assess the achievable haemodynamic increment within individuals of optimizing atrioventricular (AV) and interventricular (VV) delays. Biventricular pacing, or cardiac resynchronization therapy (CRT), arguably the greatest advancement in the treatment of heart failure in the last decade, causes immediate increases in haemodynamics and then improvement...

Identification of the onset of true labor has been one of the most difficult and critical challenge facing obstetric in maternity care. Predicting when true labor will start and recognizing when labor actually starts is important for both normal and complex pregnancies. For normal pregnancy, onset of true labor is important for reducing hospital costs as it will avoid admission when mother is n...

The incidence of thrombo-embolic complications in pregnancy varies between 2 and 5 per 1000 deliveries. Deep-vein thrombosis (DVT) is classically associated with pulmonary embolism and chronic venous insufficiency, which are leading causes of maternal morbidity and mortality. An accurate diagnosis of iliofemoral or calf vein thrombosis should be confirmed by either Doppler ultrasonography, impe...

The digital plethysmograph is a secondary output of the pulse oximeter, which is commonly used to measure arterial blood saturation (SaO2)61. Digital plethysmography provides noninvasive, continuous, and real-time measurement of arterial pressure with infrared light transmitted through a digit (finger or toe)62. This technique acquires the digital volume pulse (DVP), a waveform that estimates p...

This study investigated the effectiveness of several possible exercises for performance during standing work in order to prevent lower leg swelling and relieve subjective complaints. Volume changes in the lower leg were measured using bioelectrical impedance plethysmography in 13 healthy male subjects aged 23-36 years. Subjective complaints of leg pain, leg dullness and whole body fatigue were ...

OBJECTIVE Measurement of arterial stiffness (AS) is still hampered by the technical skill necessary to obtain reliable measurements. It is generally considered that AS is not prone to self-measurement. We developed a non-invasive technique to assess AS from a connected bathroom scale, based on ballistocardiography (BCG) and impedance plethysmography (IPG).(Figure is included in full-text articl...