scholarly journals Tissue oxygen saturation as an early indicator of delayed lactate clearance after cardiac surgery: a prospective observational study

2015 ◽  
Vol 15 (1) ◽  
Author(s):  
Rüdger Kopp ◽  
Katja Dommann ◽  
Rolf Rossaint ◽  
Gereon Schälte ◽  
Oliver Grottke ◽  
...  
Keyword(s):  
Cardiac Surgery ◽  
Observational Study ◽  
Oxygen Saturation ◽  
Prospective Observational Study ◽  
Lactate Clearance ◽  
Tissue Oxygen Saturation ◽  
Tissue Oxygen ◽  
Early Indicator

scholarly journals Tissue oxygen saturation changes and postoperative complications in cardiac surgery: a prospective observational study

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Sabino Scolletta ◽  
Federico Franchi ◽  
Elisa Damiani ◽  
Armando Cennamo ◽  
Roberta Domizi ◽  
...  
Keyword(s):  
Cardiac Surgery ◽  
Observational Study ◽  
Oxygen Saturation ◽  
Prospective Observational Study ◽  
Near Infrared ◽  
Oxygen Extraction ◽  
Tissue Oxygen Saturation ◽  
Tissue Oxygen ◽  
University Hospitals ◽  
Microvascular Reactivity

Abstract Background Cardiac surgery with extracorporeal circulation (ECC) can induce microvascular dysfunction and tissue hypoperfusion. We hypothesized that the alterations in near-infrared spectroscopy (NIRS)-derived parameters would be associated with post-operative complications in cardiac surgery patients. Methods Prospective observational study performed at two University Hospitals. Ninety patients undergoing cardiac surgery with ECC were enrolled. The NIRS sensor was applied on the thenar eminence. A vascular occlusion test (VOT, 3-min ischemia) was performed at baseline (t0), at Intensive Care Unit (ICU) admission (t1), 3 (t2) and 6 (t3) hours later. Baseline tissue oxygen saturation (StO2), oxygen extraction rate and microvascular reactivity indices were calculated. Results In the first hours after cardiac surgery, StO2 tended to increase (86% [80–89] at T3 versus 82% [79–86] at T0, p = ns), while both tissue oxygen extraction and microvascular reactivity tended to decrease, as indicated by increasing occlusion slope (− 8.1%/min [− 11.2 to − 7] at T3 versus − 11.2%/min [− 13.9 to − 7.9] at T0, p = ns) and decreasing recovery slope (1.9%/sec [1.1–2.9] at T3 versus 3.1%/sec [2.3–3.9] at T0, p = ns). No substantial differences were found in NIRS-derived variables and their changes over time between patients with complications and those without complications. Conclusions Peripheral tissue oxygen extraction and microvascular reactivity were reduced during the first hours after cardiac surgery. NIRS-derived parameters were not able to predict complications in this population of cardiac surgery patients.

Soft tissue oxygen saturation to predict admission from the emergency department: A prospective observational study

2017 ◽  
Vol 35 (8) ◽  
pp. 1111-1117 ◽  
Author(s):  
William T. Davis ◽  
Josh Lospinso ◽  
Robert M. Barnwell ◽  
John Hughes ◽  
Steven G. Schauer ◽  
...  
Keyword(s):  
Emergency Department ◽  
Soft Tissue ◽  
Observational Study ◽  
Oxygen Saturation ◽  
Prospective Observational Study ◽  
Tissue Oxygen Saturation ◽  
Tissue Oxygen

scholarly journals Tissue Oxygen Saturation Change on Upper Extremities After Ultrasound-Guided Infraclavicular Brachial Plexus Blockade; Prospective Observational Study

Medicina ◽  
2019 ◽  
Vol 55 (6) ◽  
pp. 274
Author(s):  
Mahmut Alp Karahan ◽  
Orhan Binici ◽  
Evren Büyükfırat
Keyword(s):  
Observational Study ◽  
Oxygen Saturation ◽  
Brachial Plexus ◽  
Time Course ◽  
Prospective Observational Study ◽  
Near Infrared ◽  
Tissue Oxygen Saturation ◽  
Tissue Oxygen ◽  
Ultrasound Guided ◽  
Infraclavicular Block

Background and Objective: The aim of this study was to investigate whether tissue oxygen saturation (StO2) is a reliable and objective method for assessing the adequacy of infraclavicular block and to describe the time course of StO2 changes. Materials and Methods: In this prospective observational study, StO2 was measured in 40 patients planned for elective hand surgery under infraclavicular block. Noninvasive StO2 monitoring was used prior to ultrasound-guided infraclavicular brachial plexus block and during the first 30 min of the blockade. Sensory and motor blocks were evaluated every 5 min followed by pinprick testing and Bromage scale. Results: Preanesthetic median StO2 values of the blocked side and nonblocked side were similar (p = 0.532), whereas the postanesthetic values of the blocked side were higher. At the fifth minute and the following minute, measurements compared to the nonblocked side (p < 0.001). The median StO2 values increased significantly, which increased by 4.5% at 5 min, by another 5.5% at 30 min, and by an average of 1% from 5 to 30 min compared to the baseline values in the blocked side. The responses of the patients to the questions probed in the pinprick test and Bromage scale were fully compatible with the data obtained by the near-infrared spectroscopy (NIRS) method. Conclusions: StO2 monitoring may provide a useful instrument for rapid evaluation of the success of regional anesthesia in the upper extremity.

scholarly journals Near-infrared spectroscopy monitoring tissue oxygen saturation after cardiac surgery

Critical Care ◽  
2009 ◽  
Vol 13 (Suppl 1) ◽  
pp. P239
Author(s):  
R Kopp ◽  
S Rex ◽  
K Dommann ◽  
G Schälte ◽  
G Dohmen ◽  
...  
Keyword(s):  
Cardiac Surgery ◽  
Infrared Spectroscopy ◽  
Oxygen Saturation ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Tissue Oxygen Saturation ◽  
Tissue Oxygen

scholarly journals Differences Between Central Venous and Cerebral Tissue Oxygen Saturation in Anaesthetised Patients With Diabetes Mellitus

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Roberta Sudy ◽  
Ferenc Petak ◽  
Almos Schranc ◽  
Szilvia Agocs ◽  
Ivett Blaskovics ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Cardiac Surgery ◽  
Oxygen Saturation ◽  
Tissue Oxygen Saturation ◽  
Anaesthesia Induction ◽  
Tissue Oxygen ◽  
Cerebral Tissue ◽  
Central Venous ◽  
Patients With Diabetes ◽  
And Control

AbstractThe brain has high oxygen extraction, thus the regional cerebral tissue oxygen saturation (rSO2) is lower than the central venous oxygen saturation (ScvO2). We hypothesised that diabetes widens the physiological saturation gap between ScvO2 and rSO2 (gSO2), and the width of this gap may vary during various phases of cardiac surgery. Cardiac surgery patients with (n = 48) and without (n = 91) type 2 diabetes mellitus (T2DM) underwent either off-pump coronary artery bypass (OPCAB) or other cardiac surgery necessitating cardiopulmonary bypass (CPB) were enrolled. rSO2 was measured by near-infrared spectroscopy (NIRS) and ScvO2 was determined simultaneously from central venous blood. rSO2 was registered before and after anaesthesia induction and at different stages of the surgery. ScvO2 did not differ between the T2DM and control patients at any stage of surgery, whereas rSO2 was lower in T2DM patients, compared to the control group before anaesthesia induction (60.4 ± 8.1%[SD] vs. 67.2 ± 7.9%, p<0.05), and this difference was maintained throughout the surgery. After anaesthesia induction, the gSO2 was higher in diabetic patients undergoing CPB (20.2 ± 10.4% vs. 12.4 ± 8.6%, p < 0.05) and OPCAB grafting surgeries (17.0 ± 7.5% vs. 9.5 ± 7.8%, p < 0.05). While gSO2 increased at the beginning of CPB in T2DM and control patients, no significant intraoperative changes were observed during the OPCAB surgery. The wide gap between ScvO2 and rSO2 and their uncoupled relationship in patients with diabetes indicate that disturbances in the cortical oxygen saturation cannot be predicted from the global clinical parameter, the ScvO2. Thus, our findings advocate the monitoring value of NIRS in T2DM.

scholarly journals Tissue oxygen saturation during anaesthesia, cardiopulmonary bypass and intensive care stay for cardiac surgery

Critical Care ◽  
2008 ◽  
Vol 12 (Suppl 2) ◽  
pp. P71
Author(s):  
J Sanders ◽  
D Martin ◽  
A Smith ◽  
B Keogh ◽  
M Mutch ◽  
...  
Keyword(s):  
Cardiac Surgery ◽  
Intensive Care ◽  
Cardiopulmonary Bypass ◽  
Oxygen Saturation ◽  
Tissue Oxygen Saturation ◽  
Tissue Oxygen ◽  
Intensive Care Stay
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