Quantitative electroencephalogram in term neonates under different sleep states
AbstractElectroencephalogram (EEG) can be used to assess depth of consciousness, but interpreting EEG can be challenging, especially in neonates whose EEG undergo rapid changes during the perinatal course. EEG can be processed into quantitative EEG (QEEG), but limited data exist on the range of QEEG for normal term neonates during wakefulness and sleep, baseline information that would be useful to determine changes during sedation or anesthesia. We aimed to determine the range of QEEG in neonates during awake, active sleep and quiet sleep states, and identified the ones best at discriminating between the three states. Norm...
Source: Journal of Clinical Monitoring and Computing - October 18, 2023 Category: Information Technology Source Type: research

Renal medullary oxygenation during laparoscopic vs open surgery: the impact of blood pressure management —a pilot randomized controlled trial
AbstractThe impact of blood pressure targets and surgical approach (laparoscopic or open) on continuous urinary oxygenation (PuO2), a validated surrogate of renal medullary PO2, during general surgery, is unclear. We aimed to assess the effects of different blood pressure targets and surgical procedures on PuO2. We randomized patients receiving either laparoscopic or open surgery into two mean arterial pressure (MAP) target groups: usual MAP or a high MAP. We measured PuO2 in real-time and analyzed it according to the type of surgery and blood pressure target. The study was retrospectively registered on the 5th of July 202...
Source: Journal of Clinical Monitoring and Computing - October 13, 2023 Category: Information Technology Source Type: research

True intratracheal oxygen concentration delivered by SentriO Oxy ™ masks under various respiratory conditions: a bench study
This study aimed to accurately measure the intratracheal fraction of inspired oxygen (FiO2) using SentriO Oxy ™ masks under relatively low oxygen flow rates. A manikin-ventilator-test lung simulation system was used. We measured FiO2 at the level of the carina, 5 minutes after applying 45 different respiratory parameter combinations using SentriO Oxy ™ masks. Tidal volume (TV) was set to 300, 500, and 700 mL; respiratory rate (RR) was set to 8, 12, 16, 20, and 24 breaths per minute; and oxygen flow rate was set to 6, 8, and 10 L/min. Our hypothesis was that FiO2 would be proportional to the difference between oxygen f...
Source: Journal of Clinical Monitoring and Computing - October 13, 2023 Category: Information Technology Source Type: research

Accuracy and clinical utility of heart rate variability derived from a wearable heart rate monitor in patients undergoing major abdominal surgery
The objectives of this study were (1) to assess the validity of using the Polar H10 HR monitor as an alternative to a clinical Holter ECG and (2) to test total power (TP) as a predictor of intraoperative hypotension. The primary outcome was the level of agreement between Polar H10 and Holter ECG. Twenty-three patients undergoing major abdominal surgery with general anesthesia had 5-minute HR recordings taken concurrently with both devices during a pre-anesthetic consultation. Agreement between Polar H10 and Holter ECG was compared via Bland –Altman analysis and Lin’s Concordance Correlation Coefficient. Patients were d...
Source: Journal of Clinical Monitoring and Computing - October 13, 2023 Category: Information Technology Source Type: research

Comparative performance of stimpod electromyography with mechanomyography for quantitative neuromuscular blockade monitoring
ConclusionThe electromyograph produced results that were comparable to the mechanomyograph. (Source: Journal of Clinical Monitoring and Computing)
Source: Journal of Clinical Monitoring and Computing - October 13, 2023 Category: Information Technology Source Type: research

Measurement accuracy of a microwave doppler sensor beneath the mattress as a continuous respiratory rate monitor: a method comparison study
ConclusionThe microwave Doppler sensor had a small bias but relatively low precision, similar to other devices. In CEG analyses, the risk of each monitor leading to inadequate clinical decision-making was low.Trial registration number: UMIN000038900, February 1, 2020. (Source: Journal of Clinical Monitoring and Computing)
Source: Journal of Clinical Monitoring and Computing - October 4, 2023 Category: Information Technology Source Type: research

Agreement of zero-heat-flux thermometry with the oesophageal and tympanic core temperature measurement in patient receiving major surgery
This study validated the precision and accuracy of a cutaneous zero-heat-flux thermometer and its performance in detecting intraoperative hypothermia. Adults undergoing major non-cardiac surgeries with general anaesthesia were enrolled in the study. Core temperatures were measured with a zero-heat-flux thermometer, infrared tympanic membrane thermometer, and oesophagal monitoring at 15-minute intervals. Taking the average value of temperature measured in the tympanic membrane and oesophagus as a reference, we assessed the agreement using the Bland-Altman analysis and linear regression methods. Sensitivity, specificity, and...
Source: Journal of Clinical Monitoring and Computing - October 4, 2023 Category: Information Technology Source Type: research

Evaluation of temperature-dependent fluctuations in skin microcirculation flow using a light-emitting diode based photoacoustic imaging device
Conclusion: These findings suggest that the LED-PAI device could be an option for evaluating microcirculation in association with changes in temperature. (Source: Journal of Clinical Monitoring and Computing)
Source: Journal of Clinical Monitoring and Computing - September 26, 2023 Category: Information Technology Source Type: research

Deep learning classification of capnography waveforms: secondary analysis of the PRODIGY study
AbstractCapnography monitors trigger high priority ‘no breath’ alarms when CO2 measurements do not exceed a given threshold over a specified time-period. False alarms occur when the underlying breathing pattern is stable, but the alarm is triggered when the CO2 value reduces even slightly below the threshold. True ‘no breath’ events can be falsely classified as breathing if waveform artifact causes an aberrant spike in CO2 values above the threshold. The aim of this study was to determine the accuracy of a deep learning approach to classifying segments of capnography waveforms as either ‘breath’ or ‘no breath...
Source: Journal of Clinical Monitoring and Computing - September 26, 2023 Category: Information Technology Source Type: research

Blood pressure control with phenylephrine or dobutamine: a randomized controlled trial comparing effects on cerebral and paravertebral tissue oxygen saturation measured with near-infrared spectroscopy
AbstractPreserving haemodynamics is expected to positively affect tissue oxygen saturation. We hypothesized that maintaining mean arterial blood pressure (MAP) (using phenylephrine (PE) or dobutamine (Dobu)) would equally affect regional cerebral and paravertebral tissue saturation (rScO2 and rSpvO2, respectively). Thirty-four patients were randomly assigned to receive either PE or Dobu, in order to keep MAP within 20% of the preoperative value. Their effect on haemodynamics, rScO2 and rSpvO2 at thoracic level T3-T4, T9-T10 and lumbar level L1-L2 was calculated at different doses. Drug-induced haemodynamic effects differed...
Source: Journal of Clinical Monitoring and Computing - September 26, 2023 Category: Information Technology Source Type: research

Reliability and reproducibility of the DICART device to assess capillary refill time: a bench and in-silico study
AbstractCapillary refill time (CRT) is an important indicator of peripheral perfusion with a strong prognostic value, but it is sensitive to environmental factors and numerous measurement methods are reported in the litterature. DiCARTECH has developed a device that assesses CRT. We sought to investigate the robustness of the device and the reproducibility of the algorithm in a bench and in-silico study. We used the video acquired from a previous clinical study on healthy volunteers. For the bench study, the measurement process was performed by a robotic system piloted by a computer that analyzed 250 times nine previously ...
Source: Journal of Clinical Monitoring and Computing - September 26, 2023 Category: Information Technology Source Type: research

Are NIRS-derived cerebral autoregulation and ABPopt values different between hemispheres in hypoxic-ischemic brain injury patients following cardiac arrest?
ConclusionWe found no differences between left and right-sided NIRS recordings or CA estimation in comatose and ventilated HIBI patients. This suggests that in these patients without signs of localized pathology unilateral recordings might be sufficient to estimate CA status or provide ABPopt targets. (Source: Journal of Clinical Monitoring and Computing)
Source: Journal of Clinical Monitoring and Computing - September 26, 2023 Category: Information Technology Source Type: research

Letter to the editor
AbstractWe review the study by Xu et al. (J Clin Monit Comput 37(4):985 –992, 2023.https://doi.org/10.1007/s10877-022-00968-1) on ultrasound-guided regional blocks in clavicle surgery, assessing the effects on anaesthesia and postoperative outcomes. However, there are concerns. The defined population of the study differs from the registered title (Xu et al. J Clin Monit Comput 37(4):985 –992, 2023.https://doi.org/10.1007/s10877-022-00968-1). In particular, the authors did not specify fracture types (Xu et al. J Clin Monit Comput 37(4):985 –992, 2023.https://doi.org/10.1007/s10877-022-00968-1). In addition, the method...
Source: Journal of Clinical Monitoring and Computing - September 25, 2023 Category: Information Technology Source Type: research

Electrocardiogram alterations in non-traumatic brain injury: a systematic review
AbstractThe presence of abnormal electrocardiograms in individuals without known organic heart disease is one of the most common manifestations of cardiac dysfunction occurring during acute non traumatic brain injury. The primary goal of the present review is to provide an overview of the available data and literature regarding the presence of new-onset electrocardiographic (ECG) alterations in acute non traumatic brain injury. The secondary aim is to identify the incidence of ECG alterations and consider the prognostic significance of new-onset ECG changes in this setting. To do so, English language articles from January ...
Source: Journal of Clinical Monitoring and Computing - September 22, 2023 Category: Information Technology Source Type: research

Video plethysmography for contactless blood pressure and heart rate measurement in perioperative care
AbstractThe purpose of this study was to evaluate the feasibility and accuracy of remote Video Plethysmography (VPPG) for contactless measurements of blood pressure (BP) and heart rate (HR) in adult surgical patients in a hospital setting. An iPad Pro was used to record a 1.5-minute facial video of the participant ’s face and VPPG was used to extract vital signs measurements. A standard medical device (Welch Allyn) was used for comparison to measure BP and HR. Trial registration: NCT05165381. Two-hundred-sixteen participants consented and completed the contactless BP and HR monitoring (mean age 54.1 ±  16.8 years, 5...
Source: Journal of Clinical Monitoring and Computing - September 16, 2023 Category: Information Technology Source Type: research