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首页> 外文期刊>Paediatric anaesthesia >Accuracy of the CNAP? monitor, a noninvasive continuous blood pressure device, in providing beat-to-beat blood pressure readings in pediatric patients weighing 20-40 kilograms
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Accuracy of the CNAP? monitor, a noninvasive continuous blood pressure device, in providing beat-to-beat blood pressure readings in pediatric patients weighing 20-40 kilograms

机译：CNAP的准确性？监护仪，一种无创的连续血压设备，可为体重在20至40公斤的小儿患者提供逐次血压读数

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Summary Background During perioperative care, the continuous measurement of blood pressure (BP) provides superior physiologic monitoring to intermittent techniques. However, such monitoring requires placement of an intraarterial catheter, which may be time-consuming or associated with adverse events and technical difficulty. A noninvasive, continuous BP monitoring device has been studied in the adult population. This study prospectively assesses its accuracy in pediatric patients, weighing 20-40 kg. Methods The technology evaluated is the CNAP? Monitor 500, developed by CNSystems AG (Graz, Austria). The study cohort included pediatric patients weighing between 20 and 40 kg, scheduled for surgery for which arterial line (AL) placement was planned. Systolic (sBP), diastolic (dBP), and mean arterial (MAP) blood pressure readings were captured from the AL and the CNAP? device every minute during anesthetic care. Results The study cohort consisted of 20 patients (11 weighing between 30 and 40 kg and 9 weighing between 20 and 29.9 kg) with a mean age of 9.8 ± 3.4 years (range, 6-16 years) and weight of 29.8 ± 6.1 kg (range, 20.9-38.7 kg). There were a total of 1076 pairs each of sBP, dBP, and MAP values in the 20-29.9 kg group. The absolute difference between the sBP, dBP, and MAP was 9.8 ± 8.5, 6.8 ± 5.3, and 6.7 ± 6.2 mmHg, respectively. The correlation coefficient between the AL and the CNAP? device was 0.48, 0.60, and 0.64 for the sBP, dBP, and MAP, respectively. The CNAP? values (sBP, dBP, MAP) were ≤5 mmHg from the AL values in 38.6%, 48.5%, and 55.0% of the values, respectively. In the 30-40 kg group, there were a total of 2737 pairs of sBP, dBP, and MAP values. The absolute difference between the sBP, dBP, and MAP was 11.5 ± 9.3, 7.5 ± 5.3, and 7.9 ± 6.6 mmHg, respectively. The correlation coefficient between the arterial cannula and the CNAP? device was 0.48, 0.45, and 0.51 for the sBP, dBP, and MAP, respectively. CNAP? readings were ≤5 mmHg from the AL values (sBP, dBP, MAP) in 29.0%, 41.9%, and 40.5% of the values, respectively. Conclusion Although some variation in its accuracy was noted, the CNAP? device provides a noninvasive and continuous blood pressure reading which appears to be within clinically useful limits. It may be that modification of the finger cuffs is needed to improve its absolute accuracy as our clinical experience demonstrated that achieving an effective fit with the cuffs was at times difficult.
机译：背景技术在围手术期护理期间，连续测量血压（BP）可为间歇性技术提供出色的生理监测。然而，这种监测需要放置动脉内导管，这可能是耗时的或与不良事件和技术难度有关。在成年人群中研究了一种无创，连续的BP监测设备。这项研究前瞻性评估了体重在20至40公斤的小儿患者的准确性。方法CNAP是评估的技术吗？ Monitor 500，由CNSystems AG（奥地利格拉茨）开发。该研究队列包括体重在20至40公斤之间的小儿患者，这些患者计划进行手术，并计划放置动脉线（AL）。从AL和CNAP中获取收缩压（sBP），舒张压（dBP）和平均动脉（MAP）血压读数。麻醉护理过程中，每分钟都要使用一次设备。结果该研究队列由20名患者组成（11名体重在30至40公斤之间，9名体重在20至29.9公斤之间），平均年龄为9.8±3.4岁（范围6-16岁），体重为29.8±6.1 kg（范围，20.9-38.7公斤）。 20-29.9 kg组中的sBP，dBP和MAP值共1076对。 sBP，dBP和MAP之间的绝对差分别为9.8±8.5、6.8±5.3和6.7±6.2 mmHg。 AL与CNAP之间的相关系数？ sBP，dBP和MAP的设备分别为0.48、0.60和0.64。 CNAP？相对于AL值的sBP，dBP，MAP值分别为≤5mmHg（分别为38.6％，48.5％和55.0％）。在30至40公斤组中，总共有2737对sBP，dBP和MAP值。 sBP，dBP和MAP之间的绝对差分别为11.5±9.3、7.5±5.3和7.9±6.6 mmHg。动脉套管与CNAP之间的相关系数？ sBP，dBP和MAP的设备分别为0.48、0.45和0.51。 CNAP？ AL值（sBP，dBP，MAP）的读数分别≤5 mmHg，分别为该值的29.0％，41.9％和40.5％。结论尽管注意到了其准确性，CNAP？该设备可提供无创且连续的血压读数，该读数似乎在临床有用的范围内。可能需要对指套进行修改以提高其绝对精度，因为我们的临床经验表明，有时很难实现与指套的有效贴合。

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