Results 251 to 260 of about 445,703 (277)
Some of the next articles are maybe not open access.
Detection of deep venous thrombosis by impedance plethysmography
The American Journal of Surgery, 1979Ninety-eight limbs in sixty-seven patients supected of having lower extremity deep venous thrombosis were evaluated by physical examination, venous impedance plethysmography (IPG), and venography. Diagnosis based on physical signs commonly associated with deep venous thrombosis was false-positive in 43 to 66 per cent and false-negative in 26 to 73 per ...
Marc Cooperman +4 more
openaire +3 more sources
Impedance plethysmography in the diagnosis of arterial and venous disease
Annals of Biomedical Engineering, 1984The objective of this paper is to review the theoretical basis and clinical application of electrical impedance plethysmography in the noninvasive evaluation of peripheral arterial and venous disease. Theoretical, experimental and clinical studies have now demonstrated a direct relationship between electrical impedance changes and limb volume changes ...
openaire +3 more sources
Impedance plethysmography: the origin of electrical impedance changes measured in the human calf
Medical and Biological Engineering and Computing, 1980Electrical impedance plethysmography of the lower leg is now a widely used test for detection of deep vein thrombosis. The origin of the impedance signal is difficult to evaluate in the living subject, and experimental animals have important anatomic differences. A controlled study on human cadavers was therefore undertaken.
Nilima A. Patwardhan +3 more
openaire +3 more sources
Clinical Orthopaedics and Related Research, 1989
Impedance plethysmography (IPG) is a useful noninvasive detection of proximal segment thrombosis. Seven hundred patients treated with total hip arthroplasty were examined preoperatively and several times postoperatively using this technique. Twenty-one abnormal IPG results were obtained, and venography confirmed that 12 of these patients had proximal ...
W. G. Kernohan +5 more
openaire +3 more sources
Impedance plethysmography (IPG) is a useful noninvasive detection of proximal segment thrombosis. Seven hundred patients treated with total hip arthroplasty were examined preoperatively and several times postoperatively using this technique. Twenty-one abnormal IPG results were obtained, and venography confirmed that 12 of these patients had proximal ...
W. G. Kernohan +5 more
openaire +3 more sources
Intracardiac Impedance Plethysmography
American Journal of Physiology-Legacy Content, 1953Dean K. Crystal +3 more
openaire +3 more sources
Position artifacts in occlusive impedance phlebography (plethysmography)
The American Journal of Surgery, 1978The accuracy of occlusive impedance phlebography (IPG) depends on recognition of the artifacts that produce false-positive results. Fifty per cent of a series of studies of patients with normal legs showed abnormal results when the recording was made with the leg held straight.
openaire +2 more sources
An Application of Electrocardiographic Lead Theory to Impedance Plethysmography
IEEE Transactions on Biomedical Engineering, 1971The change in mutual impedance ?Z resulting from a change ?g in the conductivity of a particular region of a volume conductor is shown to be given by ?Z = - ?g?Lt?·L? dv. L? and L? are the lead fields associated with the two ports used to measure ?Z. The integration is over the region where the conductivity has changed. The superscript t indicates that
openaire +3 more sources
Calibration ofdZ/dt in impedance plethysmography [PDF]
Medical & Biological Engineering & Computing, 1985 G. D. Jindal, J. P. Babu
openaire +2 more sources