Abstract:
:In the 1930s and 1940s, photo cells permitted German, English, and American physiologists to construct ear oximeters with red and infrared light, requiring calibration. In 1940 Squire recognized that changes of red and infrared light transmission caused by pneumatic tissue compression permitted saturation to be computed. In 1949 Wood used this idea to compute absolute saturation continuously from the ratios of optical density changes with pressure in an ear oximeter. In 1972 Takuo Aoyagi, an electrical engineer at Nihon Kohden company in Tokyo, was interested in measuring cardiac output noninvasively by the dye dilution method using a commercially available ear oximeter. He balanced the red and infrared signals to cancel the pulse noise which prevented measuring the dye washout accurately. He discovered that changes of oxygen saturation voided his pulse cancellation. He then realized that these pulsatile changes could be used to compute saturation from the ratio of ratios of pulse changes in the red and infrared. His ideas, equations and instrument were adapted, improved and successfully marketed by Minolta about 1978, stimulating other firms to further improve and market pulse oximeters worldwide in the mid 1980s. Dr. Aoyagi and associates provided a detailed history for this paper.
journal_name
Anesth Analgjournal_title
Anesthesia and analgesiaauthors
Severinghaus JWdoi
10.1213/01.ane.0000269514.31660.09subject
Has Abstractpub_date
2007-12-01 00:00:00pages
S1-4, tables of contentsissue
6 Suppleissn
0003-2999issn
1526-7598pii
105/6S_Suppl/S1journal_volume
105pub_type
传,历史文章,杂志文章abstract:BACKGROUND:In children, the laryngeal mask airway (LMA) is frequently displaced within the hypopharynx, resulting in repositioning of the device. When the tip of the LMA is placed in the esophageal inlet, the arytenoids are moved ventrally. When the LMA is rotated or deviated, the ventral movement of the arytenoids may...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0000000000000551
更新日期:2015-02-01 00:00:00
abstract:UNLABELLED:In this retrospective cohort study, we compared adverse cardiac outcomes after noncardiac surgery among patients with prior percutaneous transluminal coronary angioplasty (PTCA), patients with nonrevascularized coronary artery disease (CAD), and normal controls. Inpatient hospital discharge abstracts from al...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-199909000-00003
更新日期:1999-09-01 00:00:00
abstract:BACKGROUND:A new benzodiazepine, remimazolam, which is rapidly metabolized by tissue esterases to an inactive metabolite, has been developed to permit a fast onset, a short, predictable duration of sedative action, and a more rapid recovery profile than currently available drugs. We report on modeling of the data and s...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,随机对照试验
doi:10.1213/ANE.0b013e318241f68a
更新日期:2012-08-01 00:00:00
abstract:UNLABELLED:Percutaneous needle liver biopsy is an important procedure for the diagnosis and evaluation of liver disease and is frequently associated with pain. In this prospective study, we investigated the prevalence and characteristics of this pain syndrome. Fifty-four subjects, who underwent liver biopsy under ultra...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章
doi:10.1213/01.ane.0000060453.74744.17
更新日期:2003-05-01 00:00:00
abstract:UNLABELLED:Intrathecal (IT) sufentanil provides effective analgesia for extracorporeal shock wave lithotripsy. However, the optimal dose of sufentanil has not been established. We designed a prospective, randomized, double-blinded study to determine the optimal dose of IT sufentanil. Sixty men were randomized to receiv...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00000539-199910000-00013
更新日期:1999-10-01 00:00:00
abstract:BACKGROUND:Obesity causes multiorgan dysfunction, specifically metabolic abnormalities in the liver. Obese patients are opioid-sensitive and have high rates of respiratory complications after surgery. Obesity also has been shown to cause resistance to leptin, an adipose-derived hormone that is key in regulating hunger,...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0000000000001578
更新日期:2016-12-01 00:00:00
abstract::The purpose of this study was to investigate whether regression of sensory analgesia during constant epidural bupivacaine infusion was different in postoperative patients with acute pain than in patients with chronic nonsurgical pain. Sensory levels of analgesia (to pinprick) and pain (on a five-point scale) were asse...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:
更新日期:1988-08-01 00:00:00
abstract::The Bonfils Retromolar Intubation Fiberscope is a rigid, straight fiberoptic device with a 40-degree curved tip, which facilitates targeted intubation. Bonfils, using a retromolar approach to intubate tracheas of children with Pierre Robin syndrome, was first described in 1983. After an initial steep learning curve, t...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,评审
doi:10.1213/ANE.0b013e318265bae2
更新日期:2012-10-01 00:00:00
abstract:UNLABELLED:Surgery causes changes in hemostasis, leading to a hypercoagulable state that has been linked to both arterial and venous thrombotic complications. The etiology of this state is unknown, but many investigators have hypothesized that perioperative neuroendocrine changes are responsible. We have previously dem...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00000539-199803000-00038
更新日期:1998-03-01 00:00:00
abstract:BACKGROUND:Volatile inhaled anesthetics exert a differential protective effect against bronchospasm development after cholinergic stimulation. However, their ability to inhibit the adverse respiratory consequences of an anaphylactic reaction after exposure to an allergen has not been characterized. We therefore compare...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0b013e31828e5ccf
更新日期:2013-06-01 00:00:00
abstract::This retrospective case series of patients with refractory sacroiliac joint (SIJ) pain presents our first 77 SIJ radiofrequency ablation (RFA) procedures performed with a multilesion probe. Of these, 16 (20.8%) provided no relief; 55 (71.4%) provided >50% pain relief at 6 weeks; 42 (54.5%, 95% confidence interval, 42....
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,多中心研究
doi:10.1213/ANE.0000000000000282
更新日期:2014-08-01 00:00:00
abstract::The purpose of this canine study was to examine the cerebral vascular and metabolic effects of adding nitrous oxide to isoflurane from 1.4% expired (1 MAC) up to a concentration giving an isoelectric electroencephalogram (EEG). Cerebral blood flow (CBF) and cerebral metabolic rate for oxygen (CMRO2) were determined us...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/00000539-199101000-00013
更新日期:1991-01-01 00:00:00
abstract::When neuromuscular blockade becomes necessary in the intensive care unit, there are several options available in regard to both the drug and the mode of delivery (continuous versus intermittent administration). Despite extensive experience with intermediate acting drugs such as atracurium or vecuronium, these muscle r...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章
doi:10.1097/00000539-199507000-00003
更新日期:1995-07-01 00:00:00
abstract:BACKGROUND:Previous studies show that the potent, prototypical sigma(1)-receptor agonist 4-phenyl-1-(4-phenylbutyl) piperidine (PPBP) prevents cell death after oxygen-glucose deprivation (OGD) in primary cortical neuronal cultures. We tested the hypothesis that PPBP protects neurons by a mechanism involving activation ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ane.0b013e318192442c
更新日期:2009-03-01 00:00:00
abstract:BACKGROUND:Implementation of initiatives to increase anesthesia group productivity depends not just on anesthesia groups, but on operating room (OR) nursing administration. OR nursing directors may encourage organizational change based on the needs of their hospitals and nurses. These changes may differ from those that...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ane.0b013e31818874a8
更新日期:2008-12-01 00:00:00
abstract:UNLABELLED:Endotracheal administration of epinephrine 0.02 mg/kg (twice the IV dose) is recommended when IV access is unavailable during cardiopulmonary resuscitation. The standard IV dose has been considered too small for the endotracheal route by causing a detrimental decrease of arterial blood pressure (BP), presuma...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-200210000-00045
更新日期:2002-10-01 00:00:00
abstract:BACKGROUND:Hypotension compromises local tissue perfusion, thereby reducing tissue oxygenation. Hypotension might thus be expected to promote infection. Hypotension on surgical wards, while usually less severe than intraoperative hypotension, is common and often prolonged. In this retrospective cohort study, we tested ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0000000000003666
更新日期:2018-11-01 00:00:00
abstract::As most of us are aware, almost every facet of our society is becoming, for better or worse, progressively more technology-dependent. Technological advancement has made autonomous systems, also known as robots, an integral part of our life in several fields, including medicine. The application of robots in anesthesia ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,评审
doi:10.1213/ANE.0000000000004646
更新日期:2020-05-01 00:00:00
abstract::Acid-base status and blood levels of bupivacaine were determined in 16 diabetic parturients and their infants after epidural anesthesia for cesarean section. The newborn infants were divided into two groups based on umbilical artery pH at birth. Group A consisted of 10 infants who had a pH of less than 7.2 and group B...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:
更新日期:1981-08-01 00:00:00
abstract::This study was undertaken to compare desflurane with propofol anesthesia in outpatients undergoing peripheral orthopedic surgery. Data were combined from two institutions participating in a multicenter study. Ninety-one patients, ASA physical status I or II, were each randomly assigned to one of four groups. After adm...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1213/00000539-199210000-00019
更新日期:1992-10-01 00:00:00
abstract:BACKGROUND:Surveys suggest that, consistent with a high smoking prevalence, Chinese smokers in the general population report little interest in quitting. In other cultures, surgery is a powerful teachable moment for smoking cessation, increasing the rate of spontaneous quitting. We determined the perioperative tobacco ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0b013e31828e5cf0
更新日期:2013-06-01 00:00:00
abstract:UNLABELLED:We investigated the effects of isoflurane-induced burst suppression, monitored with electroencephalography (EEG), on cerebral blood flow velocity (CBFV), cerebral oxygen extraction (COE), and autoregulation in 16 patients undergoing cardiac surgery. The experimental procedure was performed during nonpulsatil...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章
doi:10.1213/01.ane.0000086732.97924.be
更新日期:2003-11-01 00:00:00
abstract:UNLABELLED:The purpose of this study was to determine if rates of telemetry events differ between patients whose monitoring is appropriately "indicated" versus "not indicated" by systematically applying rigorous criteria for appropriateness of electrocardiogram (ECG) telemetry usage. We performed a retrospective cohort...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章
doi:10.1213/01.ane.0000081720.49358.53
更新日期:2003-11-01 00:00:00
abstract:BACKGROUND:The presence of an endotracheal tube is the main cause for developing ventilator-associated pneumonia (VAP), but pneumonia can still develop in hospitalized patients after endotracheal tube removal (postextubation pneumonia [PEP]). We hypothesized that short-term intubation (24 hours) can play a role in the ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0000000000001899
更新日期:2017-04-01 00:00:00
abstract:BACKGROUND:Intrathecal neostigmine not only produces analgesia but also severe nausea. In contrast, epidural neostigmine enhances opioid and local anesthetic analgesia without causing nausea. Previous studies examined only single epidural neostigmine bolus administration and did not assess the efficacy of continuous ep...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,随机对照试验
doi:10.1213/ane.0b013e31819518e4
更新日期:2009-08-01 00:00:00
abstract:BACKGROUND:In vivo animal assays are a cornerstone of preclinical pain research. An optimal stimulus for determining the activity of potential analgesics would produce responses of a consistent magnitude on repeated testing. Intraplantar (i.pl.) injection of hypertonic saline (HS) in mice produces robust nociceptive re...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0000000000003593
更新日期:2019-07-01 00:00:00
abstract:UNLABELLED:Volatile anesthetics attenuate baroreflex function in a concentration-dependent manner. This study was designed to determine how long full recovery of baroreflex control of heart rate takes after isoflurane or sevoflurane anesthesia in healthy volunteers. We assessed baroreflex sensitivity in 20 subjects ran...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00000539-200111000-00012
更新日期:2001-11-01 00:00:00
abstract:BACKGROUND:Hypoxemia, as measured by pulse oximetry (SpO2), is common in postanesthesia care unit (PACU) patients. The temporal distribution of desaturation has managerial implications because treatment may necessitate the presence of an anesthesiologist. METHODS:We retrieved SpO2 values recorded electronically every ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0000000000000410
更新日期:2014-12-01 00:00:00
abstract:UNLABELLED:In adult patients, the creation of pneumoperitoneum (PP) by means of carbon dioxide (CO(2)) insufflation leads to an increase in cerebral blood flow velocity (CBFV), which is thought to be caused by hypercapnia. We evaluated whether PP leads to an increase of CBFV in children, and whether this increase is di...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-200202000-00005
更新日期:2002-02-01 00:00:00
abstract:UNLABELLED:Heart transplantation in patients with increased pulmonary vascular resistance is often associated with postbypass right heart failure. We therefore compared the abilities of prostaglandin E(1) (PGE(1)) and inhaled nitric oxide to reduce pulmonary vascular resistance during heart transplantation. Patients un...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00000539-200003000-00005
更新日期:2000-03-01 00:00:00