Abstract：
OBJECTIVES:This study was conducted to determine the response time of the Opti-Q continuous cardiac output (CCO) device to a step change in cardiac. DESIGN:Prospective study. SETTING:University hospital animal lab. MODEL:Female sheep. INTERVENTIONS:In ten animals, cardiac output was altered suddenly by opening and closing a peripheral arteriovenous shunt to test the response time of the CCO system. MEASUREMENTS AND MAIN RESULTS:Cardiac output was measured continuously by thermodilution and ultrasonic techniques while an arteriovenous shunt was opened and closed. A total of 53 dynamic observations were made (5-6 per animal). The mean response time of the continuous cardiac output device was 86 seconds and was unaffected by the magnitude or direction of the change in cardiac output. It was also unaffected by the animal's weight. CCO values were not statistically different from standard thermodilution measurement (p = 0.895). Shunt flow ranged from 430 to 1730 ml/min and averaged 812 ml/min. The mean CCO with the shunt closed was 4.62 L/min. There was 1.5 to 2 minutes under or overshoot in cardiac output in 11% of the measurements. CONCLUSIONS:Continuous cardiac output measurement was as accurate as those made by standard bolus thermodilution. The average response time to acute changes in cardiac output was approximately 1.5 minutes or ten times faster than previously reported systems. Response time is independent of animal mass, shunt volume and the direction of cardiac output perturbations.
journal_name
J Clin Monit Computjournal_title
Journal of clinical monitoring and computingauthors
Goldstein LJdoi
10.1023/a:1009934112134subject
Has Abstractpub_date
1999-12-01 00:00:00pages
435-9issue
7-8eissn
1387-1307issn
1573-2614journal_volume
15pub_type
杂志文章abstract：:One of the main goals of hemodynamic support is to preserve tissue perfusion. However issue perfusion is related more to microvascular perfusion than aortic blood flow. Monitoring the microcirculation has long been difficult. Recent technologic advances have made feasible monitoring of the microcirculation at bedside ...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章,评审
doi：10.1007/s10877-012-9383-8
更新日期：2012-10-01 00:00:00
abstract：OBJECTIVES:The application of sighs during baseline ventilation was found to improve alveolar recruitment and oxygenation in patients with acute respiratory distress syndrome (ARDS). The present investigation evaluates if respiratory mechanics can be modified by a sigh. METHODS:Ten consecutive patients with acute lung...
journal_title：Journal of clinical monitoring and computing
pub_type： 临床试验,杂志文章
doi：10.1007/s10877-006-9028-x
更新日期：2006-08-01 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：:Recent advances in technology have brought many kinds of monitoring devices into the operating room (OR). The information gathered by monitors can be channeled to the operating ward information system via a local area network (LAN). Connecting patients to monitors and monitors to the LAN, however, requires a large num...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1023/a:1009911208828
更新日期：2000-01-01 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：:Sedation in locations outside the operating room (OR) is common. Guidelines for safe patient monitoring have been updated by the American Society of Anesthesiology to include monitoring of ventilation and/or carbon dioxide (CO2). Although technologies exist to monitor these variables, the quality and/or availability o...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-015-9809-1
更新日期：2017-02-01 00:00:00
abstract：:From home to intensive care units, innovations in pulse oximetry are susceptible to improve the monitoring and management of patients developing acute respiratory failure, and particularly those with the coronavirus disease 2019 (COVID-19). They include self-monitoring of oxygen saturation (SpO2) from home, continuous...
journal_title：Journal of clinical monitoring and computing
pub_type： 社论
doi：10.1007/s10877-020-00550-7
更新日期：2020-06-23 00:00:00
abstract：:We aimed at identifying a model that dynamically predicts future need for renal replacement therapy (RRT) in intensive care unit (ICU) patients and can easily be implemented for online monitoring at the bedside. 7290 interdisciplinary ICU admissions were investigated. Patients with <3 days of stay or RRT in the first ...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-015-9814-4
更新日期：2017-02-01 00:00:00
abstract：OBJECTIVE:Conventional sphygmomanometers are being replaced by automated devices; can they be used to accurately calculate ABPI? METHOD:Thirty-six volunteers (72 legs) attending a vascular clinic had their ankle, brachial blood pressure and ABPIs calculated using each of these 3 methods. (1) Conventional aneuroid BP c...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-008-9146-8
更新日期：2008-10-01 00:00:00
abstract：:Pulse pressure variation (PPV) and cardiac output (CO) can guide perioperative fluid management. Capstesia (Galenic App, Vitoria-Gasteiz, Spain) is a mobile application for snapshot pulse wave analysis (PWAsnap) and estimates PPV and CO using pulse wave analysis of a snapshot of the arterial blood pressure waveform di...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-020-00572-1
更新日期：2020-08-04 00:00:00
abstract：:Cigarette smoking is often associated with the development of several respiratory diseases however, if diagnosed early, the changes in the lung tissue caused by smoking may be reversible. Computerised respiratory sounds have shown to be sensitive to detect changes within the lung tissue before any other measure, howev...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-016-9887-8
更新日期：2017-06-01 00:00:00
abstract：:The physiology underlying the intracranial pressure (ICP) curve morphology is not fully understood. Recent research has suggested that the morphology could be dependent on arterial cerebral inflow and the physiological and pathophysiological properties of the intracranial cavity. If understood, the ICP curve could pro...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-019-00342-8
更新日期：2020-06-01 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：:The mesenteric traction syndrome (MTS) is associated with prostacyclin (PGI2) facilitated systemic vasodilatation during surgery and is identified by facial flushing. We hypothesized that severe facial flushing would be related to the highest concentrations of plasma PGI2 and accordingly to the highest levels of skin ...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-018-0226-0
更新日期：2019-10-01 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：: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：: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
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：:Bioreactance is a novel non-invasive method for cardiac output measurement that involves the analysis of blood flow-dependent changes in the phase shifts of electrical currents applied across the chest. The present study (1) compared resting and exercise cardiac outputs determined by bioreactance and bioimpedance meth...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-012-9334-4
更新日期：2012-04-01 00:00:00
abstract：OBJECTIVES:To determine if wavelet analysis techniques can be used to reliably identify individual breaths from the photoplethysmogram (PPG). METHODS:Photoplethysmograms were obtained from 22 healthy adult volunteers timing their respiration rate in synchronisation with a metronome. A secondary timing signal was obtai...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-005-2697-z
更新日期：2004-12-01 00:00:00
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journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1023/a:1009998100819
更新日期：1998-05-01 00:00:00
abstract：:The Sensmart Model X-100 (Nonin Medical Inc, Plymouth, MN, USA) is a relatively new device that possesses two sets of emitters and detectors and uses near infrared spectroscopy (NIRS) to measure regional cerebral oxygen saturation (rSO2). The value of rSO2 obtained by other NIRS devices is affected by physiological an...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-020-00567-y
更新日期：2020-07-31 00:00:00
abstract：:We assessed the effect of re-calibration time on cardiac output estimation and trending performance in a retrospective analysis of an intensive care unit patient population using error grid analyses. Paired thermodilution and arterial blood pressure waveform measurements (N = 2141) from 222 patient records were extrac...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-015-9749-9
更新日期：2016-10-01 00:00:00
abstract：:The Nexfin device allows for non-invasive beat-to-beat blood pressure monitoring (BP(NXF)). Perioperative hypotension and hypertension have been shown to be associated with poor clinical outcomes. The goal of the present study was to assess the ability of this device to decrease the duration of significant intraoperat...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-012-9344-2
更新日期：2012-04-01 00:00:00
abstract：:To develop and validate a mathematical model for predicting intracranial pressure (ICP) noninvasively using phase-contrast cine MRI (PC-MRI). We performed a retrospective analysis of PC-MRI from patients with communicating hydrocephalus (n = 138). The patients were recruited from Shenzhen Second People's Hospital betw...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-020-00598-5
更新日期：2020-10-01 00:00:00
abstract：OBJECTIVE:To further elucidate temperature related changes in subcortical components of somatosensory evoked potentials (SEP) in intraoperative monitoring. METHODS:Intraoperative monitoring of subcortical median nerve SEP under deep hypothermia is described in a patient undergoing intracranial giant aneurysm surgery. ...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1023/a:1020792729242
更新日期：2002-04-01 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：:In the present investigation, the data sets of NCD (Non Communicable Diseases) risk factors, a standard report of Saudi Arabia 2005, in collaboration with WHO (World Health Organisation) were employed. The Oracle Data Miner (ODM) tool was used for the analysis and prediction of data. The data sets for different age gr...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-010-9260-2
更新日期：2010-12-01 00:00:00
abstract：:To determine the effect of implementing an algorithm of fluid and blood administration based on continuous monitoring of hemoglobin (SpHb) and PVI (plethysmography variability index) on mortality and transfusion on a whole hospital scale. This single-center quality program compared transfusion at 48 h and mortality at...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-019-00367-z
更新日期：2020-08-01 00:00:00
abstract：:Jasiukaitis and Lyon (J Clin Monit Comput, https://doi.org/10.1007/s10877-018-0181-9, 2018) described an motor evoked potential (MEP)amplitude trending system to detect MEP amplitude loss against a background of MEP variability. They found that the end of case value of a running R2 triggered by a set MEP amplitude los...
journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1007/s10877-019-00272-5
更新日期：2020-02-01 00:00:00
