Processed EEG monitoring in critical care: a black swan or a shining star?
(Source: Journal of Clinical Monitoring and Computing)
Source: Journal of Clinical Monitoring and Computing - August 2, 2022 Category: Information Technology Source Type: research

Dynamic imaging for dynamic lung events
(Source: Journal of Clinical Monitoring and Computing)
Source: Journal of Clinical Monitoring and Computing - July 19, 2022 Category: Information Technology Source Type: research

Higher intracranial pressure variability is associated with lower cerebrovascular resistance in aneurysmal subarachnoid hemorrhage
This study corroborates the hypothesis that higher ICPV, at least in the 4-h interval, is favorable and may reflect more compliant and possibly more active cerebral vessels. (Source: Journal of Clinical Monitoring and Computing)
Source: Journal of Clinical Monitoring and Computing - July 17, 2022 Category: Information Technology Source Type: research

Sublingual microcirculation: comparison between the 415  nm blue light and 520 nm green light of sidestream dark field videomicroscopes
AbstractGreen light with a wavelength of 520  nm is commonly used in sidestream dark field (SDF) video microscopes for sublingual microcirculation assessment in clinical practice. However, blue light could obtain a clearer microcirculatory image due to a higher light absorption coefficient of hemoglobin. The aim of this study was to compare t he sublingual microcirculatory image quality acquisition and related microcirculatory parameters between 520 nm green light and 415 nm blue light probes in the SDF device named MicroSee V100. Sublingual microcirculation films from twenty-one healthy volunteers were prospectively co...
Source: Journal of Clinical Monitoring and Computing - July 15, 2022 Category: Information Technology Source Type: research

Comparing helmet with mask CPAP following major abdominal surgery
(Source: Journal of Clinical Monitoring and Computing)
Source: Journal of Clinical Monitoring and Computing - July 10, 2022 Category: Information Technology Source Type: research

Outcomes after decrease in hypothermia usage for out of Hospital Cardiac arrest after targeted temperature management study
ConclusionsOut of hospital cardiac arrest patients with persistent comatose state treated with hypothermia of 33  °C had improved odds of discharge with good neurologic outcomes when compared to those treated with targeted normothermia. This improvement of outcomes appears to have been driven by the improved outcomes in the patients who had presented with non-shockable rhythm. (Source: Journal of Clinical Monitoring and Computing)
Source: Journal of Clinical Monitoring and Computing - July 8, 2022 Category: Information Technology Source Type: research

Do higher alarm thresholds for arterial blood pressure lead to less perioperative hypotension? A retrospective, observational cohort study
In conclusion, higher alarm thresholds do not generally lead to less hypotensive episodes perioperatively. There was a slight but significant reduction of the occurrence of intraoperative hy potension in the presence of higher thresholds for blood pressure alarms. However, this reduction only seems to be present in patients with very few hypotensive episodes. (Source: Journal of Clinical Monitoring and Computing)
Source: Journal of Clinical Monitoring and Computing - July 7, 2022 Category: Information Technology Source Type: research

Temperature measurements of a wearable and wireless axillary sensor iThermonitor but not a bladder probe represents the core temperature during laparoscopic rectal surgery
ConclusionsThe temperature recorded by iThermonitor has better concordance with the core temperature than the bladder temperature recorded by Foley catheter sensor in laparoscopic rectal surgery. (Source: Journal of Clinical Monitoring and Computing)
Source: Journal of Clinical Monitoring and Computing - July 5, 2022 Category: Information Technology Source Type: research

Intraoperative recording of laryngeal adductor reflex and cortical motor evoked potentials during jugular foramen schwannoma surgery: a case report and literature review
ConclusionsWe conclude that LAR with vagal nerve CoMEPs are two complementary methods and provide reliable information about the functional status of the vagus nerve during surgery. (Source: Journal of Clinical Monitoring and Computing)
Source: Journal of Clinical Monitoring and Computing - June 28, 2022 Category: Information Technology Source Type: research

Quantification of respiratory sounds by a continuous monitoring system can be used to predict complications after extubation: a pilot study
AbstractTo show that quantification of abnormal respiratory sounds by our developed device is useful for predicting respiratory failure and airway problems after extubation. A respiratory sound monitoring system was used to collect respiratory sounds in patients undergoing extubation. The recorded respiratory sounds were subsequently analyzed. We defined the composite poor outcome as requiring any of following medical interventions within 48  h as defined below. This composite outcome includes reintubation, surgical airway management, insertion of airway devices, unscheduled use of noninvasive ventilation or high-flow nas...
Source: Journal of Clinical Monitoring and Computing - June 22, 2022 Category: Information Technology Source Type: research

A novel smartphone app for blood pressure measurement: a proof-of-concept study against an arterial catheter
We report here the first experimental evidence of smartphone-derived BP estimation compared to an arterial catheter in a highly dynamic context such as induction of general anesthesia. We tested a smartphone app (OptiBP) on 121 patients requiring general anesthesia and invasive BP monitoring. For each patient, ten 1-min segments aligned in time with ten smartphone recordings were extracted from the continuous invasive BP. A total of 1152 recordings from 119 patients were analyzed. After exclusion of 2 subjects and rejection of 565 recordings due to BP estimation not generated by the app, we retained 565 recordings from 109...
Source: Journal of Clinical Monitoring and Computing - June 21, 2022 Category: Information Technology Source Type: research

Development and validation of a model to calculate anesthetic agent consumption from inspired and end-expired concentrations, minute ventilation, fresh gas flow and dead space ventilation
AbstractAnesthetic agent consumption is often calculated as the product of fresh gas flow (FGF) and vaporizer dial setting (FVAP). Because FVAP of conventional vaporizers is not registered in automated anesthesia records, retrospective agent consumption studies are hampered. The current study examines how FVAP can be retrospectively calculated from the agent ’s inspired (FIN) and end-expired concentration (FET), FGF, and minute ventilation (MV). Theoretical analysis of agent mass balances in the circle breathing reveals FVAP = [FIN − (dead space fraction * FIN + (1 − dead space fraction) * FET) * (1 â...
Source: Journal of Clinical Monitoring and Computing - June 16, 2022 Category: Information Technology Source Type: research

Intra-abdominal hypertension in cardiac surgery patients: a multicenter observational sub-study of the Accuryn registry
AbstractIntra-abdominal hypertension (IAH) is frequently present in the critically ill and is associated with increased morbidity and mortality. Conventionally, intermittent ‘spot-check’ manual measurements of bladder pressure in those perceived as high risk are used as surrogates for intra-abdominal pressure (IAP). True patterns of IAH remain unknown. We explored the incidence of IAH in cardiac surgery patients and describe the intra-and postoperative course of IAP using a novel, high frequency, automated bladder pressure measurement system. Sub-analysis of a prospective, multicenter, observational study (NCT04669548)...
Source: Journal of Clinical Monitoring and Computing - June 13, 2022 Category: Information Technology Source Type: research

Pulmonary gas exchange evaluated by machine learning: a computer simulation
AbstractUsing computer simulation we investigated whether machine learning (ML) analysis of selected ICU monitoring data can quantify pulmonary gas exchange in multi-compartment format. A 21 compartment ventilation/perfusion (V/Q) model of pulmonary blood flow processed 34,551 combinations of cardiac output, hemoglobin concentration, standard P50, base excess, VO2 and VCO2 plus three model-defining parameters: shunt, log SD and mean V/Q. From these inputs the model produced paired arterial blood gases, first with the inspired O2 fraction (FiO2) adjusted to arterial saturation (SaO2)  = 0.90, and second with FiO2 increa...
Source: Journal of Clinical Monitoring and Computing - June 13, 2022 Category: Information Technology Source Type: research

Using generalized additive models to decompose time series and waveforms, and dissect heart –lung interaction physiology
AbstractCommon physiological time series and waveforms are composed of repeating cardiac and respiratory cycles. Often, the cardiac effect is the primary interest, but for, e.g., fluid responsiveness prediction, the respiratory effect on arterial blood pressure also convey important information. In either case, it is relevant to disentangle the two effects. Generalized additive models (GAMs) allow estimating the effect of predictors as nonlinear, smooth functions. These smooth functions can represent the cardiac and respiratory cycles ’ effects on a physiological signal. We demonstrate how GAMs allow a decomposition of p...
Source: Journal of Clinical Monitoring and Computing - June 13, 2022 Category: Information Technology Source Type: research