Results 261 to 270 of about 266,391 (304)

The Rewarming Index Formula for Pediatric Cardiopulmonary Perfusion

Artificial Organs, 2009
AbstractCareful rewarming of perfusion blood following cardiopulmonary bypass surgery is critical to a successful outcome, but the optimal rewarming strategy is not clear. The purpose of this study was to derive a formula for a rewarming index (defined as [rewarming time × perfusion flow]/[body weight × body surface area]) that would enable the ...
Hideshi, Itoh, Shingo, Kasahara, Yasuhiro, Fujii, Ysuhiro, Kotani, Sadahiko, Arai, Shunji, Sano   +5 more
openaire   +2 more sources

Arteriovenous pH difference—A new index of perfusion

Journal of Pediatric Surgery, 1988
Measurement of the pH of arterial blood may not reflect early stages of anaerobic metabolism. Since a relationship exists between pH and cellular utilization of oxygen, this study sought to determine whether the difference between arterial and venous pH might serve as a more useful index for estimating the adequacy of tissue perfusion.
K S, Bergman, B H, Harris
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Application of the perfusion index in obstetric bleeding

The Journal of Maternal-Fetal & Neonatal Medicine, 2016
We assessed the utility of the pulse oximeter perfusion index (PI) in maternal monitoring immediately after delivery.We examined 30 pregnant women without any complications using the Rad7 device at delivery. The correlations between heart rate (HR), systolic blood pressure (BP), oxygen saturation SpO2, PI, Pleth variability index (PVI), shock index and
Hiroaki, Tanaka, Shinji, Katsuragi, Kayo, Tanaka, Takuya, Kawamura, Masafumi, Nii, Michiko, Kubo, Kazuhiro, Osato, Yoshihito, Sasaki, Tomoaki, Ikeda   +8 more
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Abnormal hepatic perfusion index predicts recurrence of colorectal carcinoma

Colorectal Disease, 2000
ObjectiveThe hepatic perfusion index (HPI) is a ratio of the gradient of hepatic arterial to total hepatic blood flow. This study correlated HPI with histopathological indicators of prognosis and disease‐free survival following curative resection of colorectal cancer.Patients and methodsHPI was measured preoperatively by dynamic hepatic scintigraphy in
A I, Sarela, H J, Gallagher, R C, Macadam, D S, O'Riordain, A, Parkin, P J, Guillou   +5 more
openaire   +2 more sources

Masimo Perfusion Index Versus Doppler for Tourniquet Effectiveness Monitoring

Journal of Special Operations Medicine, 2019
In addition to a plethysmograph, Masimo pulse oximeters display a Perfusion Index (PI) value. This study investigated the possible usefulness of PI for monitoring limb tourniquet arterial occlusion.Tactical Ratcheting Medical Tourniquets were applied to the thighs of 15 subjects.
Piper L, Wall, Charisse M, Buising, David, Nelms, Lisa, Grulke, Catherine Hackett, Renner   +4 more
openaire   +2 more sources

Perfusion index in the preterm infant immediately after birth

Early Human Development, 2015
To evaluate PI in preterm infants during the first 10 min of life.An observational study was conducted in the delivery room on preterm infants (less than 32 week gestation). PI values were obtained from a pre ductal saturation probe placed on the right wrist.
G.A. Hawkes, J.M. OToole, M. Kenosi, C.A. Ryan, E.M. Dempsey   +4 more
openaire   +2 more sources

Myocardial Perfusion Reserve Index in Children With Kawasaki Disease

Journal of Magnetic Resonance Imaging, 2017
BackgroundCoronary artery lesions in patients with Kawasaki disease (KD) can impair myocardial perfusion, yet evaluation of perfusion defects by cardiac magnetic resonance (MR) in children is often qualitative.PurposeIn this study we aimed to use a quantitative method of myocardial perfusion using stress cardiac MR‐derived myocardial perfusion reserve ...
Richard M. Friesen, Michal Schäfer, Pei‐Ni Jone, Nana Appiawiah, Daniel Vargas, Brian Fonseca, Michael V. DiMaria, Uyen Truong, LaDonna Malone, Lorna P. Browne   +9 more
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Hepatic perfusion index and the evolution of liver metastases

Nuclear Medicine Communications, 1987
A total of 150 patients with primary carcinoma of the gastrointestinal tract had first-pass technetium colloid scintigraphy to estimate the hepatic perfusion index (HPI). Postoperative follow-up over 2-4 years shows that the HPI remains a sensitive method of detecting hepatic metastases, even in patients whose liver appeared normal at laparotomy.
D A, Cooke, A, Parkin, P, Wiggins, P J, Robinson, G R, Giles   +4 more
openaire   +2 more sources

The influence of downstream arterial perfusion parameters on Doppler pulsatility index and resistance index in an in-vitro perfusion model

Vasa, 2006
Background: To investigate in vitro how downstream perfusion parameters influence pulsatility index (PI), resistance index (RI) and their constituting Doppler velocities. Materials and methods: We analyzed the influence of resistance, compliance, reflection coefficient and input impedance on PI and RI in an in-vitro model of arterial flow.
B, Schmidt, D, Ockert, A, Deussen, S, Schellong   +3 more
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The serial changes of perfusion index in preterm infants with patent ductus arteriosus: is perfusion index clinically significant?

Minerva pediatrica, 2017
European Acad Paediat ...
Terek, Demet, Altun Koroglu, Ozge, Ulger, Zulal, Yalaz, Mehmet, Kultursay, Nilgun   +4 more
openaire   +3 more sources