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Journal of Clinical Monitoring and Computing

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https://www.readbyqxmd.com/read/28631050/analgesia-nociception-index-ani-monitoring-in-patients-with-thoracic-paravertebral-block-a-randomized-controlled-study
#1
Nurseda Dundar, Alparslan Kus, Yavuz Gurkan, Kamil Toker, Mine Solak
The goal of the study was to evaluate the effectiveness of analgesia nociception index (ANI) monitoring during intraoperative period for patients with thoracic paravertebral block (TPVB) undergoing breast surgery under general anesthesia. This prospective randomized trial was performed after receiving ethics committee approval in 44 patients who were scheduled to undergo breast surgery under general anesthesia. TPVB was performed in the preoperative period using 20 mL of bupivacaine 0.25% at T4 level. Anesthesia maintenance was provided with sevoflurane in O2: air mixture and remifentanil infusion...
June 19, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28623472/failure-to-replace-a-co2-absorber-due-to-shifted-metal-pins-a-potential-source-of-hazard-to-patients
#2
LETTER
Hendrik Drinhaus, Valentina Rahn, Thorsten Annecke
No abstract text is available yet for this article.
June 16, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28623471/the-effect-of-intravenous-lidocaine-infusion-on-bispectral-index-during-major-abdominal-surgery
#3
Patrick Bazin, James Padley, Matthew Ho, Jennifer Stevens, Erez Ben-Menachem
Intraoperative lidocaine infusion has become widely accepted as an adjunct to general anesthesia where its use has been associated with opioid-sparing and enhanced recovery. The aims of this study were to determine whether or not intravenous (IV) lidocaine infusion (a) has an anesthetic sparing effect during major colorectal procedures and (b) if it also affects level of hypnosis as measured by bispectral index (BIS). Twenty-five patients undergoing laparotomy for resection of colorectal tumours were randomized to receive either IV lidocaine (1...
June 16, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28602010/closed-loop-regulation-of-arterial-pressure-after-acute-brain-death
#4
Kristian Soltesz, Trygve Sjöberg, Tomas Jansson, Rolf Johansson, Anders Robertsson, Audrius Paskevicius, Quiming Liao, Guangqi Qin, Stig Steen
The purpose of this concept study was to investigate the possibility of automatic mean arterial pressure (MAP) regulation in a porcine heart-beating brain death (BD) model. Hemodynamic stability of BD donors is necessary for maintaining acceptable quality of donated organs for transplantation. Manual stabilization is challenging, due to the lack of vasomotor function in BD donors. Closed-loop stabilization therefore has the potential of increasing availability of acceptable donor organs, and serves to indicate feasibility within less demanding patient groups...
June 10, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28600624/desflurane-usage-during-anesthesia-with-and-without-n2o-using-flow-i-automatic-gas-control-with-three-different-wash-in-speeds
#5
Robrecht De Medts, Rik Carette, Andre M De Wolf, Jan F A Hendrickx
AGC(®) (Automatic Gas Control) is the FLOW-i's automated low flow tool (Maquet, Solna, Sweden) that target controls the inspired O2 (FIO2) and end-expired desflurane concentration (FAdes) while (by design) exponentially decreasing fresh gas flow (FGF) during wash-in to a maintenance default FGF of 300 mL min(-1). It also offers a choice of wash-in speeds for the inhaled agents. We examined AGC performance and hypothesized that the use of lower wash-in speeds and N2O both reduce desflurane usage (Vdes). After obtaining IRB approval and patient consent, 78 ASA I-II patients undergoing abdominal surgery were randomly assigned to 1 of 6 groups (n = 13 each), depending on carrier gas (O2/air or O2/N2O) and wash-in speed (AGC speed 2, 4, or 6) of desflurane, resulting in groups air/2, air/4, air/6, N2O/2, N2O/4, and N2O/6...
June 9, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28593456/impact-of-hemodynamic-goal-directed-resuscitation-on-mortality-in-adult-critically-ill-patients-a-systematic-review-and-meta-analysis
#6
Maria Cronhjort, Olof Wall, Erik Nyberg, Ruifeng Zeng, Christer Svensen, Johan Mårtensson, Eva Joelsson-Alm
The effect of hemodynamic optimization in critically ill patients has been challenged in recent years. The aim of the meta-analysis was to evaluate if a protocolized intervention based on the result of hemodynamic monitoring reduces mortality in critically ill patients. We performed a systematic review and meta-analysis according to the Cochrane Handbook for Systematic Reviews of Interventions. The study was registered in the PROSPERO database (CRD42015019539). Randomized controlled trials published in English, reporting studies on adult patients treated in an intensive care unit, emergency department or equivalent level of care were included...
June 8, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28593455/monitoring-tissue-oxygen-heterogeneities-and-their-influence-on-optical-glucose-measurements-in-an-animal-model
#7
LETTER
M Rumpler, M Hajnsek, P Baumann, T R Pieber, I Klimant
The purpose of this study was to characterize the heterogeneity of oxygen partial pressure in different adipose tissue zones and to assess the possibility of compensating these heterogeneities during optical glucose measurements. In this proof of concept study, the heterogeneity of oxygen partial pressure was determined in the adipose tissue of a pig by using 48 oxygen sensors in 3 zones of the abdominal region at two different blood oxygen levels. Sensor oxygen values correlated well with reference blood oxygen values and we identified heterogeneities in oxygen partial pressure among the defined zones of the abdominal region...
June 7, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28567612/uncontrolled-delivery-of-liquid-volatile-anaesthetic-when-using-the-anaesthetic-conserving-device
#8
Igor Karnjuš, Dušan Mekiš, Miljenko Križmarić
During patient sedation with liquid volatile anaesthetic, some problems may occur through a process called auto-pumping, defined as an expansion of bubbles inside the syringe, which can lead to uncontrolled anaesthetic delivery. The study examined how the temperature of liquid volatile anaesthetics (sevoflurane and isoflurane) and the presence of gas bubbles in the syringe affect the occurrence of auto-pumping when using the anaesthetic conserving device (ACD, AnaConDa™, Sedana Medical, Uppsala, Sweden). Four different circumstances for each volatile anaesthetic were tested with a bench study: volatile anaesthetic at room temperature or precooled with and without the presence of gas bubbles in the syringe...
May 31, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28547651/photoplethysmography-for-blood-volumes-and-oxygenation-changes-during-intermittent-vascular-occlusions
#9
T Y Abay, P A Kyriacou
Photoplethysmography (PPG) is an optical technique that measures blood volume variations. The main application of dual-wavelength PPG is pulse oximetry, in which the arterial oxygen saturation (SpO[Formula: see text]) is calculated noninvasively. However, the PPG waveform contains other significant physiological information that can be used in conjunction to SpO[Formula: see text] for the assessment of oxygenation and blood volumes changes. This paper investigates the use of near infrared spectroscopy (NIRS) processing techniques for extracting relative concentration changes of oxygenated ([Formula: see text]HbO[Formula: see text]), reduced ([Formula: see text]HHb) and total haemoglobin ([Formula: see text]tHb) from dual-wavelength PPG signals during intermittent pressure-increasing vascular occlusions...
May 25, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28540614/a-comparison-of-volume-clamp-method-based-continuous-noninvasive-cardiac-output-cnco-measurement-versus-intermittent-pulmonary-artery-thermodilution-in-postoperative-cardiothoracic-surgery-patients
#10
Julia Y Wagner, Annmarie Körner, Leonie Schulte-Uentrop, Mathias Kubik, Hermann Reichenspurner, Stefan Kluge, Daniel A Reuter, Bernd Saugel
The CNAP technology (CNSystems Medizintechnik AG, Graz, Austria) allows continuous noninvasive arterial pressure waveform recording based on the volume clamp method and estimation of cardiac output (CO) by pulse contour analysis. We compared CNAP-derived CO measurements (CNCO) with intermittent invasive CO measurements (pulmonary artery catheter; PAC-CO) in postoperative cardiothoracic surgery patients. In 51 intensive care unit patients after cardiothoracic surgery, we measured PAC-CO (criterion standard) and CNCO at three different time points...
May 24, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28540613/oral-capnography-is-more-effective-than-nasal-capnography-during-sedative-upper-gastrointestinal-endoscopy
#11
Wei-Nung Teng, Chien-Kun Ting, Yu-Tzu Wang, Ming-Chih Hou, Mei-Yung Tsou, Huihua Chiang, Chun-Li Lin
The role of capnography in esophagogastroduodenoscopy (EGD) is controversial. Simultaneous supplemental oxygen, position of patient, open mouth breathing pattern, and anatomy of the oral and nasal cavity can influence capnography accuracy. This study first measured capnographic data via the nasal or oral cavity during sedated EGD. Secondly, we investigated the influence of supplementary oxygen through the oral cavity on the capnographic reading. Patients with ASA class I or II status admitted for routine EGD exams were enrolled...
May 24, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28508148/thermographic-skin-temperature-measurement-compared-with-cold-sensation-in-predicting-the-efficacy-and-distribution-of-epidural-anesthesia
#12
Arnoud A Bruins, Kay R J Kistemaker, Annemieke Boom, John H G M Klaessens, Rudolf M Verdaasdonk, Christa Boer
Due to the high rates of epidural failure (3-32%), novel techniques are required to objectively assess the successfulness of an epidural block. In this study we therefore investigated whether thermographic temperature measurements have a higher predictive value for a successful epidural block when compared to the cold sensation test as gold standard. Epidural anesthesia was induced in 61 patients undergoing elective abdominal, thoracic or orthopedic surgery. A thermographic picture was recorded at 5, 10 and 15 min following epidural anesthesia induction...
May 15, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28502060/comparison-of-univent-tube-and-ez-blocker-in-one-lung-ventilation-airway-pressures-and-gas-exchange
#13
Tülay Hoşten, Can Aksu, Alparslan Kuş, Sevim Cesur, Neşe Türkyılmaz, Mine Solak
Univent tube (UT) and EZ-blocker were used for one-lung ventilation (OLV). UT is a single lumen tube with a small separate lumen containing a bronchial blocker. EZ-blocker differs with its unique y-shaped double-cuffed distal end. We aimed to compare these two airway devices effects on airway pressures, oxygenation, ventilation and haemodynamics during OLV. Patients undergoing elective thoracotomy for the first time were included in this prospective randomized study. Patients were divided into two groups as UT and EZ...
May 13, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28497180/performance-of-a-capnodynamic-method-estimating-effective-pulmonary-blood-flow-during-transient-and-sustained-hypercapnia
#14
Thorir Svavar Sigmundsson, Tomas Öhman, Magnus Hallbäck, Eider Redondo, Fernando Suarez Sipmann, Mats Wallin, Anders Oldner, Caroline Hällsjö Sander, Håkan Björne
The capnodynamic method is a minimally invasive method continuously calculating effective pulmonary blood flow (COEPBF), equivalent to cardiac output when intra pulmonary shunt flow is low. The capnodynamic equation joined with a ventilator pattern containing cyclic reoccurring expiratory holds, provides breath to breath hemodynamic monitoring in the anesthetized patient. Its performance however, might be affected by changes in the mixed venous content of carbon dioxide (CvCO2). The aim of the current study was to evaluate COEPBF during rapid measurable changes in mixed venous carbon dioxide partial pressure (PvCO2) following ischemia-reperfusion and during sustained hypercapnia in a porcine model...
May 11, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28488169/cerebral-oxygen-desaturation-occurs-frequently-in-patients-with-hypertension-undergoing-major-abdominal-surgery
#15
Hongyi Li, Qiaochu Fu, Zongfang Wu, Jiaoli Sun, Anne Manyande, Hui Yang, Peng Wang
Hypertensive patients are more likely to experience latent cerebral ischemia causing regional cerebral oxygen saturation (rSO2) decrease during general anesthesia. The aim of this prospective observational study was to assess the incidence of decreased rSO2 in hypertensive patients undergoing major abdominal surgery and the perioperative factors affecting this change in rSO2. A total of 41 hypertensive patients were enrolled and stratified according to their hypertension as controlled and uncontrolled. The intraoperative rSO2 and physiological data were routinely collected...
May 9, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28466203/efficiency-of-oxygen-delivery-through-different-oxygen-entrainment-devices-during-sedation-under-low-oxygen-flow-rate-a-bench-study
#16
Wei-Chih Hsu, Joe Orr, Shih-Pin Lin, Lu Yu, Mei-Yung Tsou, Dwayne R Westenskow, Chien-Kun Ting
Sedative anesthetic procedures outside the operating room may depend on cylinders as oxygen source. Cylinders have limited storage capacity and a low oxygen flow rate improves the durability. We conducted the bench study to evaluate the fraction of inspired oxygen (FiO2) in different oxygen entrainment devices under low oxygen flow rate. The purpose of the bench study was to provide information to choose appropriate oxygen entrainment devices in non-operating room sedative anesthetic procedures. We utilized a manikin head-test lung-ventilator model and evaluated eight oxygen entrainment devices, including four nasal cannulas, two oral bite blocks, and two masks...
May 2, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28466202/four-wavelength-near-infrared-peripheral-oximetry-in-cardiac-surgery-patients-a-comparison-between-equanox-and-o3
#17
Arnaud Ferraris, Matthias Jacquet-Lagrèze, Jean-Luc Fellahi
Near-infrared spectroscopy (NIRS) is a continuous and noninvasive technology that measures regional tissue oxygen saturation (rSO2). A new 4-wavelength generation of NIRS monitors is now available. We aimed to compare peripheral somatic rSO2 values given by the 4-wavelength EQUANOX™ 7600 device (Nonin Medical Inc., Plymouth, Mn) and O3™ device (Masimo Corporation, Irvine, CA). Twenty adult patients scheduled for conventional elective cardiac surgery with cardiopulmonary bypass over a 4-month period were included after local Ethics Committee approval...
May 2, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28455779/microvascular-reactivity-measured-by-vascular-occlusion-test-is-an-independent-predictor-for-postoperative-bleeding-in-patients-undergoing-cardiac-surgery
#18
Karam Nam, Hyung-Min Oh, Chang-Hoon Koo, Tae Kyong Kim, Youn Joung Cho, Deok Man Hong, Yunseok Jeon
The purpose of the study is to investigate the relationship between microvascular reactivity and postoperative bleeding in cardiac surgery. The authors retrospectively analyzed a prospectively collected registry of cardiac surgery patients. Data from 154 patients enrolled in the registry were analyzed. A linear mixed model was performed to evaluate the association between the amount of postoperative chest tube output (CTO, milliliter, repeatedly measured at 0-8, 8-24, and 24-48 h) and tissue oxygen saturation (StO2) recovery slope (%/s) measured by vascular occlusion test (VOT) at skin closure...
April 28, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28432561/predicting-fluid-responsiveness-in-whom-a-simulated-example-of-patient-spectrum-influencing-the-receiver-operating-characteristics-curve
#19
Lars Øivind Høiseth, Jostein S Hagemo
The influence of patient spectrum on the sensitivities and specificities of diagnostic methods has been termed spectrum bias or spectrum effect. Receiver operating characteristics curves are often used to assess the ability of diagnostic methods to predict fluid responsiveness. As a receiver operating characteristics curve is a presentation of sensitivity and specificity, the purpose of the present manuscript was to explore if patient spectrum could affect areas under receiver operating characteristics curves and their gray zones...
April 21, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28424933/fact-and-controversies-when-assessing-fluid-responsiveness
#20
EDITORIAL
Karim Bendjelid
No abstract text is available yet for this article.
April 19, 2017: Journal of Clinical Monitoring and Computing
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