Venous oxygen saturation

Hartog, Christiane S.; Bloos, Frank

doi:10.1016/j.bpa.2014.09.006

Cited by 37 publications

(30 citation statements)

References 37 publications

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“…In this scenario, positive end expiratory pressure (PEEP) has commonly been used to reverse atelectasis and hypoxemia [ 2 ]. However, PEEP could interfere in intra-thoracic pressure, which can reduce venous return and cardiac output [ 3 ], which in turn can affect tissue perfusion and delivery/utilization.…”

Section: Introductionmentioning

confidence: 99%

“…The influence of PEEP on cardiac output and tissue oxygenation can be measured by oxygen saturation of central venous blood (ScvO 2 ) [ 3 ] and values under 70% suggest low oxygen delivery/utilization and are predictive of a poor prognosis during postoperative period [ 3 ]. However, there are few studies that evaluated the hemodynamic effects of PEEP and ScvO 2 in patients after cardiac surgery (CAB).…”

Section: Introductionmentioning

confidence: 99%

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Hemodynamics and tissue oxygenation effects after increased in positive end-expiratory pressure in coronary artery bypass surgery

et al. 2017

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BackgroundCardiac surgery is widely used in the treatment of cardiovascular diseases. However, several complications can be observed during the postoperative period. Positive end expiratory pressure (PEEP) improves gas exchange, but it might be related to decreased cardiac output and possible impairment of tissue oxygenation. The aim of this study was to investigate the hemodynamic effects and oxygen saturation of central venous blood (ScvO2) after increasing PEEP in hypoxemic patients after coronary artery bypass (CAB) surgery.MethodsSeventy post-cardiac surgery patients (CAB), 61 ± 7 years, without ventricular dysfunction (left ventricular ejection fraction 57 ± 2%), with hypoxemia (PaO2/FiO2 ratio <200) were enrolled. Heart rate, mean arterial pressure, arterial and venous blood samples were measured at intensive care unit and PEEP was increased to 12 cmH2O for 30 min.ResultsAs expected, PEEP12 improved arterial oxygenation and PaO2/FiO2 ratio (p < 0.0001). Reduction in ScvO2 was observed between PEEP5 (63 ± 2%) and PEEP12 (57 ± 1%; p = 0.01) with higher values of blood lactate in PEEP12 (p < 0.01). No hemodynamic effects (heart rate, mean arterial pressure, SpO2; p > 0.05) were related.ConclusionIncreased PEEP after cardiac surgery decreased ScvO2 and increased blood lactate, even with higher O2 delivery. PEEP did not interfere in hemodynamics status in CAB patients, suggesting that peripheral parameters must be controlled and measured during procedures involving increased PEEP in post-cardiac surgery patients in the intensive care unit.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hemodynamics and tissue oxygenation effects after increased in positive end-expiratory pressure in coronary artery bypass surgery

et al. 2017

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“…Moreover, all patients reported better scores [15]. Furthermore, we required subclavian central venous catheter insertion to monitor ScVO 2 that has its own risks of several complications including infection, subclavian artery puncture, hemothorax, and pneumothorax [16].…”

Section: Discussionmentioning

confidence: 99%

Efficacy of minimal invasive cardiac output and ScVO₂ monitoring during controlled hypotension for double-jaw surgery

Kim

Song

et al. 2019

J Dent Anesth Pain Med

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Background: Controlled hypotension (CH) provides a better surgical environment and reduces operative time. However, there are some risks related to organ hypoperfusion. The EV1000/FloTrac system can provide continuous cardiac output monitoring without the insertion of pulmonary arterial catheter. The present study investigated the efficacy of this device in double jaw surgery under CH. Methods: We retrospectively reviewed the medical records of patients who underwent double jaw surgery between 2010 and 2015. Patients were administered conventional general anesthesia with desflurane; CH was performed with remifentanil infusion and monitored with an invasive radial arterial pressure monitor or the EV1000/FloTrac system. We allocated the patients into two groups, namely an A-line group and an EV1000 group, according to the monitoring methods used, and the study variables were compared. Results: Eighty-five patients were reviewed. The A-line group reported a higher number of failed CH (P = 0.005). A significant correlation was found between preoperative hemoglobin and intraoperative packed red blood cell transfusion (r = 0.525; P < 0.001). In the EV1000 group, the mean arterial pressure (MAP) was significantly lower 2 h after CH (P = 0.014), and the cardiac index significantly decreased 1 h after CH (P = 0.001) and 2 h after CH (P = 0.007). Moreover, venous oxygen saturation (ScVO2) decreased significantly at both 1 h (P = 0.002) and 2 h after CH (P = 0.029); however, these values were within normal limits. Conclusion: The EV1000 group reported a lower failure rate of CH than the A-line group. However, EV1000/FloTrac monitoring did not present with any specific advantage over the conventional arterial line monitoring when CH was performed with the same protocol and same mean blood pressure. Preoperative anemia treatment will be helpful to decrease intraoperative transfusion. Furthermore, ScVO2 monitoring did not present with sufficient benefits over the risk and cost.

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“…Two markers of oxygen utilization, the central venous oxygen saturation from the superior vena cava (ScvO2), and the SvO2 from the proximal pulmonary artery, have been used to guide fluid administration and resuscitation 15. Use of these markers for volume assessment is based on the concept that the oxygen content of mixed venous blood returning from the body is dependent on the amount of oxygen delivered to tissues on the arterial side (as measured by arterial oxygen content and CO), as expressed in the Fick equation (assuming tissue oxygen consumption remains constant).…”

Section: Central Venous Pressurementioning

confidence: 99%

Contemporary hemodynamic monitoring, fluid responsiveness, volume optimization, and endpoints of resuscitation: an AAST critical care committee clinical consensus

Martin

Codner

Greene

et al. 2020

Trauma Surg Acute Care Open

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This article, on hemodynamic monitoring, fluid responsiveness, volume assessment, and endpoints of resuscitation, is part of a compendium of guidelines provided by the AAST (American Association for the Surgery of Trauma) critical care committee. The intention of these guidelines is to inform practitioners with practical clinical guidance. To do this effectively and contemporarily, expert consensus via the critical care committee was obtained. Strict guideline methodology such a GRADE (Grading of Recommendations Assessment, Development and Evaluation) was purposefully NOT used so as not to limit the possible clinical guidance. The critical care committee foresees this methodology as practically valuable to the bedside clinician.

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Venous oxygen saturation

Cited by 37 publications

References 37 publications

Hemodynamics and tissue oxygenation effects after increased in positive end-expiratory pressure in coronary artery bypass surgery

Hemodynamics and tissue oxygenation effects after increased in positive end-expiratory pressure in coronary artery bypass surgery

Efficacy of minimal invasive cardiac output and ScVO₂ monitoring during controlled hypotension for double-jaw surgery

Contemporary hemodynamic monitoring, fluid responsiveness, volume optimization, and endpoints of resuscitation: an AAST critical care committee clinical consensus

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Venous oxygen saturation

Cited by 37 publications

References 37 publications

Hemodynamics and tissue oxygenation effects after increased in positive end-expiratory pressure in coronary artery bypass surgery

Hemodynamics and tissue oxygenation effects after increased in positive end-expiratory pressure in coronary artery bypass surgery

Efficacy of minimal invasive cardiac output and ScVO2 monitoring during controlled hypotension for double-jaw surgery

Contemporary hemodynamic monitoring, fluid responsiveness, volume optimization, and endpoints of resuscitation: an AAST critical care committee clinical consensus

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Efficacy of minimal invasive cardiac output and ScVO₂ monitoring during controlled hypotension for double-jaw surgery