After a first episode of deep vein thrombosis (DVT), 30-50% of the patients will develop complaints suspect of recurrent DVT. Of these patients, only 20-30% do indeed have a recurrent episode of DVT. To identify patients with a true recurrent DVT, objective testing is mandatory in every patients. However, all the available tests have their limitations in patients with recurrent DVT. In this rev...

Chronic venous insufficiency of the lower limbs is a disease which is caused by an increased blood pressure inside the veins of the leg and the resulting increase of the contained blood volume. This work focuses on developing a device which uses impedance plethysmography, also known as impedance phlebography, to obtain information about the blood volume in the lower leg and provides the possibi...

Methods 37 patients on prolonged mechanical ventilation (20 males, 17 females) after abdominal surgery were followed up in ICU. The sedation level was evaluated with RASS scale and auditory evoked potentials (AEP), analgesia with the analgesia/nociceptive index (ANI), based on spectral analysis of RR intervals [2], hemodynamic parameters by impedance plethysmography. Sedation was performed by A...

We present a novel method to detect proximal volume changes based on the impedance plethysmogram (IPG) measured from limb to limb with two electrode pairs symmetrically placed at distal areas of the upper or the lower limbs. Since the measurement is sensitive to changes along the whole current path, this method allows us to detect changes in arteries that are more proximal to the torso than the...

Respiratory rate is a vital physiological measurement used in the immediate assessment of unwell children. Convenient electronic devices exist for measurement of pulse, blood pressure, oxygen saturation and temperature. Although devices which measure respiratory rate exist, none has entered everyday clinical practice. An accurate device which has no physical contact with the child is important ...

Background: We measured Functional Residual Capacity (FRC) of the lungs with three methods in healthy volunteers. The three techniques included a CO2 partial rebreathing technique, nitrogen washout technique, and the reference technique for ambulatory patients, body plethysmography. Materials and Methods: After granting consent to an IRB-approved protocol, each of the 20 healthy volunteers part...