Abstract：
:Compared with supine positioning, head-up positioning improves preoxygenation and prolongs the time to oxygen desaturation. We reevaluated benefits of head-up positioning using near-infrared spectroscopy (NIRS) with pulse oximetry in a pig model. Six pigs (mean ± SD weight: 25.3 ± 0.6 kg) were anesthetized with isoflurane and evaluated in four positions-supine, head-up, head-down, head-up to supine-just before apnea (positions' order after "supine" was randomized). In each position, after 5 min of preoxygenation with 100% oxygen, apnea was induced and the time to SpO2 < 70% measured. Hemodynamic and blood-gas variables and the cerebral tissue oxygenation index (TOI) were evaluated using NIRS and recorded. Hypovolemia was induced by collecting 600 mL blood. Apnea experiment was performed again in each position. The times (seconds) ± SD to SpO2 < 70% were 108 ± 13 (supine), 138 ± 15 (head-up; P < 0.0001 vs all other positions); 101 ± 12 (head-down) and 106 ± 15 (head-up to supine) during normovolemia, and 110 ± 29, 120 ± 7 (not significant vs all other positions), 101 ± 16, and 106 ± 11, respectively, during hypovolemia. Although the TOI was not associated with the positions during normovolemia, the head-up position during hypovolemia decreased TOI from 62% ± 6% (supine) to 50% ± 9% (head-up; P = 0.0019) before preoxygenation, and it remained low during apnea. The head-up position improves preoxygenation, but repositioning to supine negates the benefits. Head-up positioning during evident hypovolemia should be avoided because the cerebral oxygenation could decrease.
journal_name
J Clin Monit Computjournal_title
Journal of clinical monitoring and computingauthors
Kurita T,Kawashima S,Morita K,Nakajima Ydoi
10.1007/s10877-019-00456-zsubject
Has Abstractpub_date
2020-01-02 00:00:00eissn
1387-1307issn
1573-2614pii
10.1007/s10877-019-00456-zpub_type
杂志文章abstract：OBJECTIVE:Awareness with recall is a rare but serious complication of general anaesthesia with an incidence ranging from 0.1%-0.7%. In the absence of a reliable depth-of-anaesthesia monitor, attempts have been made to predict awareness from intraoperative haemodynamic monitoring data, with little success. Artificial ne...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1023/a:1015426015547
更新日期：2002-01-01 00:00:00
abstract：:Leakage of inhalational anesthetic gases is an important issue not only to staff health but awareness during general anesthesia. After inhalation of sevoflurane commenced, the audible and visible alarm of our custom-made air monitoring system was activated. The system measured 2-4 ppm of sevoflurane. A thorough search...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-013-9479-9
更新日期：2013-12-01 00:00:00
abstract：:Extravascular lung water (EVLW) could increase by permeability pulmonary oedema, cardiogenic oedema, or both. Transthoracic echocardiography examination of a patient allows quantifying B-lines, originating from water-thickened interlobular septa, and the E/Ea ratio, related to pulmonary capillary wedge pressure. The a...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-014-9582-6
更新日期：2015-02-01 00:00:00
abstract：OBJECTIVE:This study tests the hypothesis that a graphical object display (a data display consisting of meaningful shapes) will affect the ability of anesthesiologists to perform a diagnostic task rapidly and correctly. The diagnostic tasks studied were recognition and differentiation of five etiologies of shock--anaph...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1023/a:1009914019889
更新日期：1999-01-01 00:00:00
abstract：:The precise relation between heart rate variability (HRV) and autonomic re-innervation has not been established explicitly in patients after orthotopic heart transplantation (OHT), but can be inferred from the fact that the HRV is reduced immediately after OHT and may increase gradually with time. The aim of this stud...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-015-9747-y
更新日期：2016-10-01 00:00:00
abstract：:An intraoperative automated closed-loop system for goal-directed fluid therapy has been successfully tested in silico, in vivo and in a clinical case-control matching. This trial compared intraoperative cardiac output (CO) in patients managed with this closed-loop system versus usual practice in an academic medical ce...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章,随机对照试验
doi：10.1007/s10877-018-0106-7
更新日期：2018-12-01 00:00:00
abstract：:Jaundice of the newborn is a common problem as a consequence of the rapid increment of blood bilirubin in the first days of live. In most cases, it is considered a physiological transient situation, but unmanaged hyperbilirubinemia can lead to death or serious injuries for the survivors. For decades, phototherapy has ...
journal_title：Journal of clinical monitoring and computing
pub_type： 临床试验,杂志文章
doi：10.1007/s10877-006-9016-1
更新日期：2006-06-01 00:00:00
abstract：:The composite auditory evoked potentials index (cAAI) uses both cortical electroencephalogram (EEG) and response to auditory stimuli, while the bispectral index (BIS) uses only the cortical EEG and auditory evoked potentials index (AAI) uses only response to auditory stimuli. We expected that the cAAI was more useful ...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章,随机对照试验
doi：10.1007/s10877-013-9441-x
更新日期：2013-06-01 00:00:00
abstract：:Changes have been made to the AnaConDa device (Sedana Medical, Stockholm, Sweden), decreasing its size to reduce dead space and carbon dioxide (CO2) retention. However, this also involves a decrease in the surface area of the activated carbon filter. The CO2 elimination and sevoflurane (SEV) reflection of the old devi...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-019-00285-0
更新日期：2020-02-01 00:00:00
abstract：OBJECTIVE:Bispectral analysis of the electroencephalogram (EEG) has been used to monitor depth of anesthesia. In the majority of publications this has been done using the so called Bispectral (BIS) Index. The exact relation of this index to bispectral quantities like the bispectrum and its normalized version the bicohe...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1023/a:1026284321451
更新日期：2002-12-01 00:00:00
abstract：:The effectiveness of two different methods for calculating the arterial occlusion pressure (AOP) to set tourniquet inflation pressures were assessed in patients underwent knee arthroscopy. Eighty patients were included in this study. Tourniquet inflation pressure was set by adding 20 mmHg of safety margin above the AO...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-019-00366-0
更新日期：2020-08-01 00:00:00
abstract：:The optimal size selection of laryngeal mask airway (LMA) based on body weight is not always applicable. This study was prospectively conducted to evaluate the efficacy of cricoid-mental distance-based method versus weight-based method in optimal size selection of LMA in adults. Seventy-four patients (aged from 18 to ...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章,随机对照试验
doi：10.1007/s10877-019-00308-w
更新日期：2019-10-01 00:00:00
abstract：:Aortic peak systolic velocity variation (ΔVpeakAo) is a reliable dynamic indicator of preload in mechanically ventilated children. However, easily measurable alternative parameters like carotid peak systolic velocity variation (ΔVpeakCa) and suprasternal peak systolic velocity variation (ΔVpeakSs) are not well evaluat...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-019-00431-8
更新日期：2020-12-01 00:00:00
abstract：STUDY OBJECTIVES:Electrical impedance tomography (EIT) is able to reflect physiological parameters such as real-time changes in global and regional lung volume. EIT can aid in the assessment of lung recruitment, and its use has been validated in preliminary studies monitoring mechanical ventilation at the bedside. ICU ...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-006-9021-4
更新日期：2006-06-01 00:00:00
abstract：:Oesophageal balloon calibration improves the oesophageal pressure (Pes) assessment during invasive controlled mechanical ventilation. The primary aim of the present investigation was to ascertain the feasibility of oesophageal balloon calibration during pressure support ventilation (PSV). Secondarily, the calibrated P...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-019-00436-3
更新日期：2020-12-01 00:00:00
abstract：:Detection of hypovolemia prior to overt hemodynamic decompensation remains an elusive goal in the treatment of critically injured patients in both civilian and combat settings. Monitoring of heart rate variability has been advocated as a potential means to monitor the rapid changes in the physiological state of hemorr...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-013-9434-9
更新日期：2013-06-01 00:00:00
abstract：:Alarms in the operating room remain a major source of annoyance and confusion. Nearly all alarms result from a transgression of certain alarm limits. We surveyed manufacturers at a major meeting of anesthesiologists for their default alarm limits. We also conducted a mail survey of anesthesiologists in the United Stat...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1023/a:1009992830942
更新日期：1999-02-01 00:00:00
abstract：:Mathematical models can be deployed to simulate physiological processes of the human organism. Exploiting these simulations, reactions of a patient to changes in the therapy regime can be predicted. Based on these predictions, medical decision support systems (MDSS) can help in optimizing medical therapy. An MDSS desi...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-013-9502-1
更新日期：2014-12-01 00:00:00
abstract：:Hypothermia is a common perioperative complication. To prevent perioperative hypothermia amongst other things electrical heating mattresses are used. We have made an observation with the use of an electrical heating mattress that may confuse users. In this case the ECG monitoring suddenly showed spikes that looked lik...
journal_title：Journal of clinical monitoring and computing
pub_type： 信件
doi：10.1007/s10877-020-00520-z
更新日期：2020-07-15 00:00:00
abstract：OBJECTIVE:We present a new physiological model that discriminated between changes in the systemic arterial and venous circulation. To test our model, we studied the effects of dobutamine and hypovolemia in intact pentabarbital-anesthetized piglets. METHODS:Aorta pressure (Pao), central venous pressure (Pcv), mean syst...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-010-9258-9
更新日期：2010-10-01 00:00:00
abstract：:Total shoulder arthroplasty (TSA) is typically performed in the beach-chair position. Maintenance of adequate mean arterial pressure is required to provide appropriate cerebral perfusion pressure and prevent cerebral ischemia. Placement of an arterial line to facilitate invasive monitoring is discretionary, based on c...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-016-9939-0
更新日期：2017-10-01 00:00:00
abstract：:Electric energy have been in use for the treatment of various ailments, including pain, since the time of Pharaohs. The theoretical basis of electrotherapy of pain was provided by the Gate Control Theory of Melzak and Wall. In 1965, Shealey et al. first introduced electrical stimulation of spinal cord for treating pai...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章,评审
doi：10.1007/s10877-009-9201-0
更新日期：2009-10-01 00:00:00
abstract：:Prediction of difficult laryngoscopy is still the uncovered secret of anesthetic practice. This pilot study is aimed to assess the efficacy of spirometry measurements in predicting difficult laryngoscopy compared with conventional airway assessment techniques. We enrolled 202 adults, ages 18-40 years, with an American...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-016-9961-2
更新日期：2017-12-01 00:00:00
abstract：:Central venous cannulation is a commonly preformed procedure in many branches of medicine, particularly in anaesthesia and intensive care medicine. The purpose of this study was to compare the landmark-guided technique to the ultrasound-guided technique for internal jugular vein cannulation in cardiovascular surgery p...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章,随机对照试验
doi：10.1007/s10877-014-9585-3
更新日期：2015-02-01 00:00:00
abstract：OBJECTIVE:To evaluate a computerized system for mechanical ventilation of infants. METHODS:FLEX is a computerized system that includes the features of a patented mode known as adaptive-support ventilation (ASV). In addition, it has many other features including adjustment of positive end-expiratory pressure (PEEP), fr...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-009-9170-3
更新日期：2009-04-01 00:00:00
abstract：:Auditory steady state responses (ASSR) may offer an alternative to brainstem auditory evoked potentials for monitoring of the auditory nerve during surgical procedures. In the current study, we evaluated the influence of noise on ASSR characteristics in total intravenous anesthesia (TIVA). Simulated ASSR in real noise...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-016-9837-5
更新日期：2017-02-01 00:00:00
abstract：:Increasing process complexity in the pediatric intensive care unit (PICU) can lead to information overload resulting in missing pertinent information and potential errors during morning rounds. An efficient model using a novel electronic rounding tool was designed as part of a broader critical care decision support sy...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-016-9946-1
更新日期：2017-12-01 00:00:00
abstract：:Obstructive sleep apnea (OSA) is a risk factor for perioperative complications, but many OSA patients present undiagnosed. While polysomnography (PSG) is the "gold standard" for diagnosis, its application is technology-intense, time-consuming, expensive, and requires specialists, often delaying surgery. Thus, miniatur...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-018-0151-2
更新日期：2019-04-01 00:00:00
abstract：:The aim of this study was to compare the cardiac function index (CFI) and global ejection fraction (GEF) obtained by VolumeView/EV1000™, with the left ventricular ejection fraction (LVEF) by echocardiography in septic shock patients. A prospective observational study was conducted in a medical intensive care unit of a...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-018-0152-1
更新日期：2019-04-01 00:00:00
abstract：:This study aimed to evaluate the 50% and 95% effective paratracheal forces for occluding the esophagus in anesthetized patients. In 46 anesthetized patients, the upper esophagus was examined using ultrasonography, and the lower paratracheal area over the esophagus just above the clavicle was marked. Manual paratrachea...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-021-00652-w
更新日期：2021-01-26 00:00:00
