Publications by authors named "N M Krivitski"

Intradialytic hypotension due to excessive fluid removal is a common complication of hemodialysis. A bench model was constructed to evaluate quantification of active circulating blood volume (ACBV). The model included a central pump representing the heart and compartments to represent the central and peripheral circulation.

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Introduction: Cardiac output (CO) measurement is vital in veno-venous extracorporeal membrane oxygenation patient population to evaluate oxygen delivery and to early identify right heart failure. Standard clinical methods like pulmonary artery thermodilution and transpulmonary thermodilution are known to be inaccurate in the veno-venous extracorporeal membrane oxygenation setting, especially at high levels of recirculation.

Objective: The aim of the study was to develop a simple noninvasive method to measure CO in patients during veno-venous extracorporeal membrane oxygenation.

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Article Synopsis
  • Clotting is a significant issue during extracorporeal membrane oxygenation (ECMO), leading to a high percentage of patients needing oxygenator replacement due to clots forming.
  • This study aimed to validate ultrasound dilution technology for measuring oxygenator blood volume (OXBV) as a way to assess clotting quantitatively.
  • Results showed that the ultrasound method accurately measures OXBV and is reproducible, suggesting it could inform better prediction of clotting and reduce unnecessary procedure changes, though more research is needed.
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The purpose of this study was to investigate the qualitative and quantitative accuracy of transpulmonary ultrasound dilution (UD) (COstatus™, Transonic Systems) for the detection of small anatomic shunts. It was a prospective, observational study in a multi-disciplinary pediatric intensive care unit. Seventy-three critically ill children (67 post cardiac surgery), with a median (IQR) age of 10 (3-50.

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