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  1. Article

    Open Access

    Impact of clinicians’ behavior, an educational intervention with mandated blood pressure and the hypotension prediction index software on intraoperative hypotension: a mixed methods study

    Intraoperative hypotension (IOH) is associated with adverse outcomes. We therefore explored beliefs regarding IOH and barriers to its treatment. Secondarily, we assessed if an educational intervention and mand...

    Ilonka N. de Keijzer, Jaap Jan Vos in Journal of Clinical Monitoring and Computi… (2024)

  2. Article

    Perioperative monitoring of the oxygen reserve: where do we stand?

    The Oxygen Reserve Index (ORi) is an advanced plethysmography-derived variable that may help to quantify the degree of hyperoxia in patients receiving supplemental oxygen administration. ORi is a (relative) in...

    Dario Massari, Ilonka N. de Keijzer in Journal of Clinical Monitoring and Computi… (2023)

  3. Article

    Open Access

    Agreement of somatic and renal near-infrared spectroscopy with reference blood samples during a controlled hypoxia sequence: a healthy volunteer study

    Purpose: O3® Regional Oximetry (Masimo Corporation, California, USA) is validated for cerebral oximetry. We aimed to assess agreement of somatic and renal near-infrared spectroscopy with reference blood samples.

    Ilonka N. De Keijzer, Dario Massari in Journal of Clinical Monitoring and Computi… (2023)

  4. Article

    Correction to: Comparison of renal region, cerebral and peripheral oxygenation for predicting postoperative renal impairment after CABG

    Ilonka N. de Keijzer, Marieke Poterman in Journal of Clinical Monitoring and Computi… (2022)

  5. Article

    Open Access

    Comparison of renal region, cerebral and peripheral oxygenation for predicting postoperative renal impairment after CABG

    Patients undergoing coronary artery bypass grafting (CABG) are at risk of develo** postoperative renal impairment, amongst others caused by renal ischemia and hypoxia. Intra-operative monitoring of renal reg...

    Ilonka N. de Keijzer, Marieke Poterman in Journal of Clinical Monitoring and Computi… (2022)

  6. Article

    Open Access

    What is new in microcirculation and tissue oxygenation monitoring?

    Ensuring and maintaining adequate tissue oxygenation at the microcirculatory level might be considered the holy grail of optimal hemodynamic patient management. However, in clinical practice we usually focus o...

    Ilonka N. de Keijzer, Dario Massari in Journal of Clinical Monitoring and Computi… (2022)

  7. Article

    Open Access

    Do alterations in pulmonary vascular tone result in changes in central blood volumes? An experimental study

    The effects of selective pulmonary vascular tone alterations on cardiac preload have not been previously examined. Therefore, we evaluated whether changing pulmonary vascular tone either by hypoxia or the inha...

    Jaap Jan Vos, J. K. Götz Wietasch, Andreas Hoeft in Intensive Care Medicine Experimental (2021)

  8. Article

    Hypotension Prediction Index: from proof-of-concept to proof-of-feasibility

    Ilonka N. de Keijzer, Jaap Jan Vos in Journal of Clinical Monitoring and Computi… (2020)

  9. Article

    Open Access

    Disagreement in cardiac output measurements between fourth-generation FloTrac and critical care ultrasonography in patients with circulatory shock: a prospective observational study

    Cardiac output measurements may inform diagnosis and provide guidance of therapeutic interventions in patients with hemodynamic instability. The FloTrac™ algorithm uses uncalibrated arterial pressure waveform ...

    Thomas Kaufmann, Ramon P. Clement, Bart Hiemstra, Jaap Jan Vos in Journal of Intensive Care (2019)

  10. Article

    Open Access

    The effect of fluid resuscitation on the effective circulating volume in patients undergoing liver surgery: a post-hoc analysis of a randomized controlled trial

    To assess the significance of an analogue of the mean systemic filling pressure (Pmsa) and its derived variables, in providing a physiology based discrimination between responders and non-responders to fluid r...

    Jaap Jan Vos, A. F. Kalmar in Journal of Clinical Monitoring and Computi… (2018)

  11. Article

    Open Access

    Tissue oxygenation as a target for goal-directed therapy in high-risk surgery: a pilot study

    Tissue hypoperfusion occurs frequently during surgery and may contribute to postoperative organ dysfunction. There is a need for perioperative treatment protocols aiming at improving tissue oxygenation (StO2). We...

    Paul A van Beest, Jaap Jan Vos, Marieke Poterman, Alain F Kalmar in BMC Anesthesiology (2014)

  12. Article

    Open Access

    Hemodynamics and tissue oxygenation during balanced anesthesia with a high antinociceptive contribution: an observational study

    In particular surgical conditions, a balanced anesthesia with a high-antinociceptive contribution is required. This may induce cardiovascular impairment and thus compromise tissue oxygenation. In this prospect...

    Jaap Jan Vos, Marieke Poterman, Laura N Hannivoort in Perioperative Medicine (2014)