Abstract：
PURPOSE:We aimed to introduce a simple, lightweight continuous positive airway pressure (CPAP)-delivery device for the nondependent lung during one-lung ventilation, to investigate how the type of three-way stopcocks, and the compliance and resistance of a test lung affect the relationship between the oxygen flow rate and CPAP level produced, and to examine how the device works in a clinical setting. METHODS:In the test lung study, the bronchial blocker of a Univent tube was connected to a test lung. The effects of oxygen-flow rate, types of three-way stopcocks, and compliance and resistance of the test lung on the CPAP levels were studied. In the clinical study, the lightweight device was used to treat hypoxia in seven patients during one-lung ventilation with the bronchial blocker. RESULTS:In the test lung study, the CPAP level produced by the device was proportional to the oxygen-flow rate, dependent on the type of three-way stopcock used, and independent of the compliance or resistance of the test lung. There was no discrepancy between the plateau pressures of the test lung and the monitoring port of an additional stopcock at any degree of compliance or resistance of the test lung at any oxygen-flow rate. Therefore, the relationship between the oxygen-flow rate and CPAP level can be ensured in advance before application to the lung, with an additional three-way stopcock of which the distal end is occluded. In the clinical study, peripheral oxygen sataration Sp(O2) improved while the CPAP level ranged from 2.8 to 5.4 cmH2O. CONCLUSION:The lightweight CPAP delivery-device can provide variable CPAP levels by adjusting the oxygen-flow rate without real-time monitoring of the pressure.
journal_name
J Anesthjournal_title
Journal of anesthesiaauthors
Sasano H,Sasano N,Ito S,Azami T,Morita M,Takeuchi A,Sobue Kdoi
10.1007/s00540-008-0681-8subject
Has Abstractpub_date
2009-01-01 00:00:00pages
93-8issue
1eissn
0913-8668issn
1438-8359journal_volume
23pub_type
杂志文章abstract：BACKGROUND:Postanesthetic shivering can be triggered by surgical stress and several aspects of anesthetic management and is frequently preceded by a decrease in peripheral blood flow due to thermoregulatory vasoconstriction. As perfusion index correlates with peripheral blood flow, we examined whether perioperative per...
journal_title：Journal of anesthesia
pub_type： 临床试验,杂志文章
doi：10.1007/s00540-013-1658-9
更新日期：2014-02-01 00:00:00
abstract：PURPOSE:Midazolam premedication administered by the intranasal route is noninvasive with good bioavailability. Atomised intranasal midazolam spray ensures accurate drug dosage and better patient acceptability, with rapid onset of action and virtually complete absorption. METHODS:Sixty pediatric patients scheduled for ...
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更新日期：2012-06-01 00:00:00
abstract：:The effect-compartment concentration (C(e)) of a drug at a specific pharmacodynamic endpoint should be independent of the rate of drug injection. We used this assumption to derive an effect-compartment equilibrium rate constant (k(eo)) for propofol during induction of anesthesia, using a target controlled infusion dev...
journal_title：Journal of anesthesia
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更新日期：2006-01-01 00:00:00
abstract：:This study investigated right ventricular (RV) performance during hypotensive anesthesia and compared the effect of the vasodilators prostaglandin E1 (PGE1), nicardipine HCl (Nic), glycerin trinitrate (GTN), and isosorbide dinitrate (ISDN) on RV function. Fifty patients were allocated into four groups [PGE1 (n=20), Ni...
journal_title：Journal of anesthesia
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更新日期：1997-06-01 00:00:00
abstract：:We tested hypertonic saline solution (HS) to determine its effectiveness in surgical procedures for prostatic hypertrophy. We randomly selected 40 patients undergoing elective transurethral resection of the prostate for either infusion of HS (3% NaCl) at 4ml·kg(-1)·min(-1) (HS group) or lactated Ringer's solution (LR)...
journal_title：Journal of anesthesia
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更新日期：1996-09-01 00:00:00
abstract：BACKGROUND:The purpose of this study was to assess whether preanesthetic laboratory values can predict in-hospital mortality and morbidity in patients who have undergone burr hole craniostomy due to chronic subdural hematoma. METHODS:From January 2007 to February 2016, the records of 502 consecutive patients who under...
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更新日期：2016-12-01 00:00:00
abstract：:The effect of famotidine on neonates was studied in 34 obstetric patients who underwent elective cesarean section. In the famotidine group, 20 mg of famotidine was intramuscularly injected at 60 min before induction of anesthesia, and 0.5 mg of atropine was injected at 30 min before induction. In the control group, on...
journal_title：Journal of anesthesia
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更新日期：1991-07-01 00:00:00
abstract：PURPOSE:The present study aimed to investigate the effects of different dosages of propofol, that induced different depths of anesthesia, on the local activity and connectivity of nuclei within the cortico-reticulo-thalamic loops, as well as the release of amino acids in those nuclei. METHODS:The nonlinear dynamics an...
journal_title：Journal of anesthesia
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abstract：:Rectal luminal regional P(CO2) (Pr(CO2)) was compared with gastric luminal Pr(CO2) measured by automated air tonometry at intervals of 10 min in 20 children aged 6-16 years scheduled for elective surgery under general anesthesia. In 5 patients, measurement of rectal Pr(CO2) failed because of catheter-related problems....
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更新日期：2006-01-01 00:00:00
abstract：:The direct effects of nitrous oxide on left ventricular contractility and myocardial oxygen consumption (MVO2) in the ischemic isolated rat heart were studied. The rat heart was isolated and perfused by a Langendorf technique. The aortic stump was cannulated and the heart was perfused with Kumpeis solution bubbled wit...
journal_title：Journal of anesthesia
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更新日期：1994-09-01 00:00:00
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journal_title：Journal of anesthesia
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更新日期：2002-01-01 00:00:00
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journal_title：Journal of anesthesia
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00540-014-1920-9
更新日期：2015-04-01 00:00:00
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journal_title：Journal of anesthesia
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更新日期：2018-10-01 00:00:00
abstract：OBJECTIVES:The incidence of postoperative shivering is known to be inversely associated with core body temperature. However, previous studies have pointed out that the threshold of shivering could be affected by peripheral temperature or anesthetic agents. These reports pointed specific drugs, though, anesthesia techni...
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更新日期：2020-06-01 00:00:00
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journal_title：Journal of anesthesia
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abstract：PURPOSE:The aim of this pilot study was to evaluate the diagnostic value of pleth variability index (PVI) to predict fluid responsiveness in newborn infants during surgery. METHODS:PVI was continuously recorded in 29 mechanically ventilated newborn infants during surgery, and episodes of clinically indicated volume ex...
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更新日期：2013-04-01 00:00:00
abstract：PURPOSE:This study aimed to evaluate whether the three ryanodine receptor type 1 (RYR1) variants (p.Ser2345Thr, p.Ser2345Arg, and p.Lys3367Arg) which we identified in Japanese malignant hyperthermia (MH) patients with a clinical grading scale rank of 6 were causative for MH. METHODS:We prepared human embryonic kidney ...
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pub_type： 杂志文章,收录出版
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journal_title：Journal of anesthesia
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更新日期：2009-01-01 00:00:00
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更新日期：2019-02-01 00:00:00
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journal_title：Journal of anesthesia
pub_type： 杂志文章
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更新日期：2009-01-01 00:00:00
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journal_title：Journal of anesthesia
pub_type： 杂志文章,随机对照试验
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更新日期：2012-12-01 00:00:00
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更新日期：2017-04-01 00:00:00
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journal_title：Journal of anesthesia
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更新日期：2018-08-01 00:00:00
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journal_title：Journal of anesthesia
pub_type： 杂志文章,随机对照试验
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更新日期：2006-01-01 00:00:00
abstract：PURPOSE:Propofol and ketamine have become progressively popular in electroconvulsive therapy (ECT) anesthesia, although propofol shortened seizure duration and ketamine might cause cardiotoxicity, psychotic episodes, and delayed recovery. Ketofol is a combination of ketamine and propofol, and the current study was desi...
journal_title：Journal of anesthesia
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更新日期：2012-08-01 00:00:00
