Kubisa Bartosz, Lesińska Anna, Safranow Krzysztof, Pieróg Jarosław, Wójcik Janusz, Wojtyś Małgorzata Edyta, Grodzki Tomasz, Kiełbowski Kajetan
Department of Thoracic Surgery and Transplantation, Pomeranian Medical University, Szczecin, Poland.
Department of Invasive Cardiology, District Hospital, Szczecin, Poland.
Kardiochir Torakochirurgia Pol. 2023 Jun;20(2):83-93. doi: 10.5114/kitp.2023.129553. Epub 2023 Jul 26.
Near-infrared spectroscopy (NIRS) is a non-invasive method of regional tissue oxygenation measurement. Intraoperative use of NIRS to monitor brain oxygenation (BO) during surgery might be beneficial to identify cerebral desaturations.
To compare peripheral blood saturation (SpO) with BO measurements and evaluate the utility of BO in thoracic surgery.
We took BO and SpO measurements in a group of 100 patients undergoing standard thoracic surgery. Measurements were made every 15 minutes. The Mann-Whitney U test was used to compare study groups. Spearman's rank correlation coefficient was used to determine correlation between studied parameters.
We found a negative correlation between patients' age and BO at the beginning of surgery. Operations lasted between 30 and 200 minutes. We found a positive correlation between BO and SpO between 15 and 90 minutes of surgery. Subsequently, BO remained at a low level while SpO returned to baseline values. Higher minimum SpO values were noted in patients undergoing left-sided procedures.
Cerebral oxygenation does not return to baseline values until the end of the surgery as opposed to the SpO. Furthermore, both SpO and BO correlate negatively with the overall duration of thoracic surgery. In addition, after 90 minutes of surgery, SpO stopped reflecting brain oxygenation.
近红外光谱（NIRS）是一种测量局部组织氧合的非侵入性方法。术中使用NIRS监测手术期间的脑氧合（BO）可能有助于识别脑氧饱和度降低情况。
比较外周血氧饱和度（SpO）与BO测量值，并评估BO在胸外科手术中的效用。
我们对100例接受标准胸外科手术的患者进行了BO和SpO测量。每15分钟进行一次测量。采用曼-惠特尼U检验比较研究组。使用斯皮尔曼等级相关系数确定研究参数之间的相关性。
我们发现手术开始时患者年龄与BO呈负相关。手术持续时间为30至200分钟。我们发现手术15至90分钟期间BO与SpO呈正相关。随后，BO保持在较低水平，而SpO恢复到基线值。接受左侧手术的患者最低SpO值较高。
与SpO不同，脑氧合直到手术结束才恢复到基线值。此外，SpO和BO均与胸外科手术的总时长呈负相关。此外，手术90分钟后，SpO不再反映脑氧合情况。
