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Journal of Clinical Monitoring and Computing

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https://www.readbyqxmd.com/read/29330837/computer-simulated-modeling-of-healthy-and-diseased-right-ventricular-and-pulmonary-circulation
#1
Jody Chou, Joseph B Rinehart
We have previously developed a simulated cardiovascular physiology model for in-silico testing and validation of novel closed-loop controllers. To date, a detailed model of the right heart and pulmonary circulation was not needed, as previous controllers were not intended for use in patients with cardiac or pulmonary pathology. With new development of controllers for vasopressors, and looking forward, for combined vasopressor-fluid controllers, modeling of right-sided and pulmonary pathology is now relevant to further in-silico validation, so we aimed to expand our existing simulation platform to include these elements...
January 12, 2018: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29322281/carbon-dioxide-absorbents-does-it-matter-which-one-you-use
#2
Jeffrey M Feldman
No abstract text is available yet for this article.
January 10, 2018: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29302897/efficient-application-of-volatile-anaesthetics-total-rebreathing-or-specific-reflection
#3
REVIEW
Hagen Bomberg, Thomas Volk, Heinrich V Groesdonk, Andreas Meiser
The circle system has been in use for more than a 100 years, whereas the first clinical application of an anaesthetic reflector was reported just 15 years ago. Its functional basis relies on molecular sieves such as zeolite crystals or activated carbon. In a circle system, the breathing gas is rebreathed after carbon dioxide absorption; a reflector on the other hand specifically retains the anaesthetic during expiration and resupplies it during the next inspiration. Reflection systems can be used in conjunction with intensive care ventilators and do not need the permanent presence of trained qualified staff...
January 4, 2018: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29302896/comparison-of-the-accuracy-of-noninvasive-hemoglobin-monitoring-for-preoperative-evaluation-between-adult-and-pediatric-patients-a-retrospective-study
#4
Yong-Hee Park, Seho Lim, Hyun Kang, Hwa-Yong Shin, Chong Wha Baek, Young Cheol Woo
We measured noninvasive hemoglobin (SpHb) levels during the pre-anesthesia visit in patients planning elective surgery. Differences between SpHb and laboratory-measured hemoglobin (Hblab) were compared between adult and pediatric patients. In the pre-anesthesia visiting office, we routinely monitor noninvasive Hb levels with oxygen saturation and heart rate using Masimo Radical-7® Pulse CO-Oximetry (Masimo Corp., Irvine, CA, USA). We attached the R1 20 (body weight, 10-50 kg) or R1 25 (body weight > 30 kg) probe on the index finger...
January 4, 2018: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29282591/performance-of-regional-oxygen-saturation-monitoring-by-near-infrared-spectroscopy-nirs-in-pediatric-inter-hospital-transports-with-special-reference-to-air-ambulance-transports-a-methodological-study
#5
Tova Hannegård Hamrin, Peter J Radell, Urban Fläring, Jonas Berner, Staffan Eksborg
The aim of the present study was to evaluate the performance of regional oxygen saturation (rSO2) monitoring with near infrared spectroscopy (NIRS) during pediatric inter-hospital transports and to optimize processing of the electronically stored data. Cerebral (rSO2-C) and abdominal (rSO2-A) NIRS sensors were used during transport in air ambulance and connecting ground ambulance. Data were electronically stored by the monitor during transport, extracted and analyzed off-line after the transport. After removal of all zero and floor effect values, the Savitzky-Golay algorithm of data smoothing was applied on the NIRS-signal...
December 28, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29264762/a-pilot-study-to-record-visual-evoked-potentials-during-prone-spine-surgery-using-the-sightsaver%C3%A2-photic-visual-stimulator
#6
E M Soffin, R G Emerson, J Cheng, K Mercado, K Smith, J D Beckman
This is a pilot study to assess the clinical safety and efficacy of recording real-time flash visual evoked potentials (VEPs) using the SightSaver TM Visual Stimulator mask during prone spine surgery. A prospective, observational pilot study. Twenty patients presenting for spine surgery (microdiscectomy, 1-2 level lumbar fusion, or > 2 levels thoraco-lumbar fusion) were enrolled. The SightSaver™ Visual Stimulator™ was used to elicit VEPs throughout surgery. Somatosensory evoked potentials (SSEPs) were simultaneously recorded...
December 20, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29260450/the-pressure-exerted-on-the-tongue-during-intubation-with-simultaneous-cervical-spine-immobilisation-a-comparison-between-four-videolaryngoscopes-and-the-macintosh-laryngoscope-a-manikin-study
#7
Dawid Aleksandrowicz, Tomasz Gaszyński
Excessive pressures exerted on the tongue during intubation may be associated with serious complications and may make intubation more difficult. The aim of this study was to evaluate five different intubating devices in the hands of experienced anaesthetists during simulated conditions of reduced cervical spine mobility. Forty senior anaesthetists participated in the study (female = 18, male = 22). The mean pressure exerted on the tongue during intubation was recorded with a standard manometer. The overall intubation success rate as well as the difference in exerted pressures between female and male anaesthetists were also assessed...
December 20, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29260449/low-minute-ventilation-episodes-during-anesthesia-recovery-following-intraperitoneal-surgery-as-detected-by-a-non-invasive-respiratory-volume-monitor
#8
Alexandre N Cavalcante, Yvette N Martin, Juraj Sprung, Jasmin Imsirovic, Toby N Weingarten
An electrical impedance-based noninvasive respiratory volume monitor (RVM) accurately reports minute volume, tidal volume and respiratory rate. Here we used the RVM to quantify the occurrence of and evaluate the ability of clinical factors to predict respiratory depression in the post-anesthesia care unit (PACU). RVM generated respiratory data were collected from spontaneously breathing patients following intraperitoneal surgeries under general anesthesia admitted to the PACU. Respiratory depression was defined as low minute ventilation episode (LMVe, < 40% predicted minute ventilation for at least 2 min)...
December 20, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29247395/the-challenge-of-exploring-organ-function-knowledge-is-not-care-but-care-needs-knowledge
#9
EDITORIAL
Jean Paul Viale, Karim Bendjelid
No abstract text is available yet for this article.
December 15, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29238880/in-vitro-performance-of-prefilled-co2-absorbers-with-the-zeus%C3%A2
#10
Mohab Omer, Jan F A Hendrickx, Simon De Ridder, Alexander De Houwer, Rik Carette, Sofie De Cooman, Andre M De Wolf
Low fresh gas flows (FGFs) decrease the use of anesthetic gases, but increase CO2 absorbent usage. CO2 absorbent usage remains poorly quantified. The goal of this study is to determine canister life of 8 commercially available CO2 absorbent prepacks with the Zeus®. Pre-packed CO2 canisters of 8 different brands were tested in vitro: Amsorb Plus, Spherasorb, LoFloSorb, LithoLyme, SpiraLith, SpheraSorb, Drägersorb 800+, Drägersorb Free, and CO2ntrol. CO2 (160 mL min- 1) flowed into the tip of a 2 L breathing bag that was ventilated with a tidal volume of 500 mL, a respiratory rate of 10/min, and an I:E ratio of 1:1 using the controlled mechanical ventilation mode of the Zeus® (Dräger, Lubeck, Germany)...
December 13, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29234929/can-thyromental-distance-be-measured-accurately
#11
Bin Wang, Hui Peng, Weidong Yao, Ling Guo, Xiaoju Jin
Using the thyromental distance (TMD) measured based on the ultrasonographic location of the thyroid cartilage prominence as the criterion, we investigated the accuracy of TMD measurement by surface landmark identification of the thyroid cartilage prominence. Twenty-nine anesthetist resident volunteers were recruited, including 10 first-year residents, 9 second-year residents and 10 third-year residents. Each volunteer measured the other 28 volunteers' TMD. Then, the thyroid cartilage prominence of each volunteer was identified by ultrasonography of the junction of the vocal cord and thyroid cartilage, and the TMD was measured precisely...
December 12, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29230624/an-observational-study-of-the-optimal-placement-of-a-cerebral-oximeter-probe-to-avoid-the-frontal-sinus-in-children
#12
Eun-Hee Kim, Kyu-Young Song, In-Kyung Song, Ji-Hyun Lee, Young-Eun Jang, Hee-Soo Kim, Seo-Hee Lee, Jin-Tae Kim
The frontal sinus is an airspace behind the brow ridge in the skull and can affect the accuracy of the regional cerebral oxygen saturation measurements. We evaluated the optimal location for placement of a cerebral oximeter probe while avoiding the frontal sinus in pediatric patients. This retrospective observational study included 203 pediatric patients aged 3-17 years who had undergone brain computed tomography from November 2010 to December 2015. The patients were divided into five subgroups based on their age...
December 11, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29218549/accuracy-and-reliability-of-a-subcutaneous-continuous-glucose-monitoring-device-in-critically-ill-patients
#13
S Rijkenberg, S C van Steen, J H DeVries, P H J van der Voort
Subcutaneous continuous glucose monitoring (CGM) may have benefits in achieving glycemic control in critically ill patients. The aim of this study was to assess the accuracy and reliability of the FreeStyle Navigator I in critically ill patients and to assess patient related factors influencing the accuracy and reliability. This study is a retrospective analysis of data from a randomized controlled trial conducted in a 20-bed mixed intensive care unit. Analytical accuracy, clinical accuracy and reliability were assessed against arterial blood glucose samples as reference...
December 7, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29214598/evaluation-of-a-wireless-portable-wearable-multi-parameter-vital-signs-monitor-in-hospitalized-neurological-and-neurosurgical-patients
#14
Robert S Weller, Kristina L Foard, Timothy N Harwood
Unrecognized changes in patients' vital signs can result in preventable deaths in hospitalized patients. Few publications or studies instituting routine patient monitoring have described implementation and the setting of alarm parameters for vital signs. We wanted to determine if continuous multi-parameter patient monitoring can be accomplished with an alarm rate that is acceptable to hospital floor nurses and to compare the rate of patient deterioration events to those observed with routine vital sign monitoring...
December 6, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29204771/comparison-of-blood-pressure-monitoring-by-applanation-tonometry-and-invasively-assessed-blood-pressure-in-cardiological-patients
#15
G Greiwe, S Hoffmann, L Herich, M S Winkler, C J Trepte, C R Behem, M Petzoldt, D A Reuter, S A Haas
The aim of this study was to evaluate the accuracy and precision of non-invasive continuous blood pressure measurement by applanation tonometry (AT) in awake or anaesthetised cardiological intensive care patients. Patients suffering from highly impaired left ventricular function atrial fibrillation or severe aortic valve stenosis were included into the study. Arterial blood pressure was recorded by applanation tonometry (T-Line 400, Tensys Medical®, USA) and an arterial line in awake or anaesthetised patients...
December 4, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29196859/validation-of-simplified-postoperative-nausea-and-vomiting-intensity-scale-in-taiwan
#16
Hsun-Chang Shin, Ting-Wei Kang, Yu Hua Wu, H Sunny Sun, Chia-Chih Alex Tseng
This study determined whether the Simplified Postoperative Nausea and Vomiting Impact Scale (SPONVIS), could be used to predict clinically important PONV in Taiwanese. In this prospective, observational study, SPONVIS, simplified Apfel PONV Risk Scores, post-operative anti-emetic drug use, total PONV score, and 3-month recall score for PONV were recorded from Taiwanese patients who had undergone general anesthesia and surgery. With antiemetic use and 3-month recall score as validations of clinical significance, we determined whether the elements and cut-off points used in the original SPONVIS study could be used in Taiwanese patients...
December 1, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29189973/somatosensory-evoked-potentials-after-decompressive-craniectomy-for-traumatic-brain-injury
#17
Allison Bethune, Nadia Scantlebury, Ekaterina Potapova, Nicole Dinn, Victor Yang, Todd Mainprize, Mahmood Fazl, Farhad Pirouzmand, Leodante da Costa, Martin Chapman, Nicolas Phan
Somatosensory evoked potentials (SSEPs) are used for neuroprognosis after severe traumatic brain injury (TBI). However decompressive craniectomy (DC), involving removal of a portion of the skull to alleviate elevated intracranial pressure, is associated with an increase in SSEP amplitude. Accordingly, SSEPs are not available for neuroprognosis over the hemisphere with DC. We aim to determine the degree to which SSEP amplitudes are increased in the absence of cranial bone. This will serve as a precursor for translation to clinically prognostic ranges...
November 30, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29188414/velocity-pressure-loops-for-continuous-assessment-of-ventricular-afterload-influence-of-pressure-measurement-site
#18
Jona Joachim, Fabrice Vallée, Arthur Le Gall, Joaquim Matéo, Stéphanie Lenck, Sandrine Millasseau, Emmanuel Houdart, Alexandre Mebazaa, Etienne Gayat
VPloop, the graphical representation of pressure versus velocity, and its characteristic angles, GALA and β, can be used to monitor cardiac afterload during anesthesia. Ideally VPloop should be measured from pressure and velocity obtained at the same arterial location but standard of care usually provide either radial or femoral pressure waveforms. The purpose of this study was to look at the influence of arterial sites and the use of a transfer function (TF) on VPloop and its related angles. Invasive pressure signals were recorded in 25 patients undergoing neuroradiology intervention under general anesthesia with transesophageal flow velocity monitoring...
November 29, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29170861/incidence-of-peripheral-nerve-injury-during-shoulder-arthroplasty-when-motor-evoked-potentials-are-monitored
#19
Alexander W Aleem, W Bryan Wilent, Alexa C Narzikul, Andrew F Kuntz, Edward S Chang, Gerald R Williams, Joseph A Abboud
To report the incidence of clinically detectable nerve injuries when utilizing transcranial electrical motor evoked potentials (MEPs) during shoulder arthroplasty. A retrospective review of patients undergoing shoulder arthroplasty with continuous IONM was performed. The criteria for nerve alerts was an 80% amplitude reduction in MEPs. The primary outcome measure was post-operative clinically detectable nerve deficit. An additional retrospective analysis on a subset of cases using an all-or-none (100% amplitude reduction) criterion applied to the deltoid was performed...
November 23, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29150822/philips-intellivue-nmt-module-variability-of-initial-measurements
#20
LETTER
Alexandre Stouffs, Arni Ibsen, Jacques Jamart, Virginie Dubois, Philippe E Dubois
No abstract text is available yet for this article.
November 17, 2017: Journal of Clinical Monitoring and Computing
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