An Environment Is More Than a Climate
Prolonged Duration Local Anesthesia Using Liposomal Bupivacaine Combined With Liposomal Dexamethasone and Dexmedetomidine
Meeting Report for the 39th Annual Meeting and Workshops of the Society of Cardiovascular Anesthesiologists
Targeted Temperature Management After Cardiac Arrest : Systematic Review and Meta-analyses
Achieving Milestones as a Prerequisite for Proceeding With a Clinical Trial
Retrospective Review of Universal Preoperative Pregnancy Testing : Results and Perspectives
Error Grid Analysis for Arterial Pressure Method Comparison Studies
In Response
Treatment of Chronic Pain With Various Buprenorphine Formulations : A Systematic Review of Clinical Studies
Oxford Textbook of Anaesthesia, 1st Edition
Labor Analgesia as a Predictor for Reduced Postpartum Depression Scores : A Retrospective Observational Study
A Retrospective Analysis of Clinical Research Misconduct Using FDA-Issued Warning Letters and Clinical Investigator Inspection List From 2010 to 2014
The Clinical Utility of Noninvasive Pulse Co-oximetry Hemoglobin Measurements in Dark Skinned Critically Ill Patients
In Response
The Impact of Prehospital Tranexamic Acid on Blood Coagulation in Trauma Patients
Analysis of Inpatient Falls After Total Knee Arthroplasty in Patients With Continuous Femoral Nerve Block
Response to Improving the Success Rate of Chest Compression-Only CPR by Untrained Bystanders in Adult Out-of-Hospital Cardiac Arrest : Maintaining Airway Patency May Be the Way Forward
The Anesthesia Workstation : Quo Vadis?
American College of Surgeons Children’s Surgery Verification Quality Improvement Program : What Anesthesiologists Need to Know Now
Nerve Blockade and Chronic Opiate Use After Orthopedic Surgery
Bias in Before–After Studies : Narrative Overview for Anesthesiologists
Another Possible Reason to Use Prophylactic Phenylephrine Infusions to Reduce Spinal Anesthesia–Associated Hypotension : Do These Patients Stay Warmer?
Oxytocin Study Raises Concerns About Carbetocin Use
In Response
In Vitro Evaluation of a Novel Image Processing Device to Estimate Surgical Blood Loss in Suction Canisters
Superior Efficacy of Lipid Emulsion Infusion Over Serum Alkalinization in Reversing Amitriptyline-Induced Cardiotoxicity in Guinea Pig
Videolaryngoscopy for Physician-Based, Prehospital Emergency Intubation : A Prospective, Randomized, Multicenter Comparison of Different Blade Types Using A.P. Advance, C-MAC System, and KingVision
Passive Ventilation in Chest Compression-Only CPR by Untrained Bystanders : A Reply
A Perioperative Medicine Model for Population Health : An Integrated Approach for an Evolving Clinical Science
Changing Default Ventilator Settings on Anesthesia Machines Improves Adherence to Lung-Protective Ventilation Measures
Respiratory Gas Analysis—Technical Aspects
Is Compliance With Surgical Care Improvement Project Cardiac (SCIP-Card-2) Measures for Perioperative β-Blockers Associated With Reduced Incidence of Mortality and Cardiovascular-Related Critical Quality Indicators After Noncardiac Surgery?
In Response
Informed Consent and Cognitive Dysfunction After Noncardiac Surgery in the Elderly
Cardiac Arrest in the Operating Room : Part 2—Special Situations in the Perioperative Period
Reduced Left Ventricular Global Longitudinal Strain Predicts Prolonged Hospitalization : A Cohort Analysis of Patients Having Aortic Valve Replacement Surgery
Randomized Clinical Trial of Preoperative High-Dose Methylprednisolone on Postoperative Pain at Rest After Laparoscopic Appendectomy
Distracted Doctoring : Returning to Patient-Centered Care in the Digital Age. Do We Have Time for This?
Visualization Improves Supraclavicular Access to the Subclavian Vein in a Mixed Reality Simulator
Perioperative Management of the Patient With a Left Ventricular Assist Device for Noncardiac Surgery
Evidence Basis for Regional Anesthesia in Ambulatory Anterior Cruciate Ligament Reconstruction : Part III
Tailored Holder for Continuous Echocardiographic Monitoring
Decreased Parasympathetic Activity of Heart Rate Variability During Anticipation of Night Duty in Anesthesiology Residents
Survival of Staphylococcus epidermidis in Propofol and Intralipid in the Dead Space of Intravenous Injection Ports
A World of Need
Some Cautionary Tales About Ideal Body Weight Dosing of Anesthetic Medications : It Is Not All that Ideal!
Consensus Statement on Perioperative Use of Neuromuscular Monitoring
Sugammadex and Oral Contraceptives : Is It Time for a Revision of the Anesthesia Informed Consent?
Large Variability in the Diversity of Physiologically Complex Surgical Procedures Exists Nationwide Among All Hospitals Including Among Large Teaching Hospitals
Selective Serotonin Reuptake Inhibitors and Serotonin–Norepinephrine Reuptake Inhibitors Are Not Associated With Bleeding or Transfusion in Cardiac Surgical Patients
Nonhuman Primates in Anesthesia Research : Have We Reached the End of the Road?
ECMO in the Adult Patient : Core Critical Care
Predicting Severity of Acute Pain After Cesarean Delivery : A Narrative Review
Management of 1-Lung Ventilation—Variation and Trends in Clinical Practice : A Report From the Multicenter Perioperative Outcomes Group
Design and Evaluation of a Closed-Loop Anesthesia System With Robust Control and Safety System
Technical Solutions and the Safety Big Picture
Failure of the Oxygen Gauge to Accurately Reflect the Pressure in the Oxygen Tank
Effect of Remote Ischemic Preconditioning on Outcomes in Adult Cardiac Surgery : A Systematic Review and Meta-analysis of Randomized Controlled Studies
Total Intravenous Anesthesia and Target Controlled Infusions : A Comprehensive Global Anthology
Perioperative Steroid Use for Tonsillectomy and Its Association With Reoperation for Posttonsillectomy Hemorrhage : A Retrospective Cohort Study
Developing Reflective Practice : A Guide for Medical Students, Doctors, and Teachers
In Response : Investigation of 2 Prototypes of Novel Noncontact Technologies for Automated Real-Time Capture of Incremental Drug Administration Data From Syringes
Two-Year Follow-Up Survey : Views of US Anesthesiologists About Health Care Costs and Future Practice Roles
Lung Isolation in the Patient With a Difficult Airway
Ultrasound-Assisted Versus Fluoroscopic-Guided Lumbar Sympathetic Ganglion Block : A Prospective and Randomized Study
Perioperative Noninvasive Blood Pressure Monitoring
How to Survive in Anaesthesia, 5th ed
Reducing Maternal Mortality in Papua New Guinea : Contextualizing Access to Safe Surgery and Anesthesia
Alkalinized Lidocaine Preloaded Endotracheal Tube Cuffs Reduce Emergence Cough After Brief Surgery : A Prospective Randomized Trial
The Science of Local Anesthesia : Basic Research, Clinical Application, and Future Directions
Improvement of the Elevated Tryptase Criterion to Discriminate IgE- From Non–IgE-Mediated Allergic Reactions
Anesthesia Medication Handling Needs a New Vision
Effects of Increasing Airway Pressures on the Pressure of the Endotracheal Tube Cuff During Pelvic Laparoscopic Surgery
Epidural Space Identification With Loss of Resistance Technique for Epidural Analgesia During Labor : A Randomized Controlled Study Using Air or Saline—New Arguments for an Old Controversy
In Response
Risk of Cognitive Impairment by Sleep-Disordered Breathing
Comparison of Transcranial Doppler and Ultrasound-Tagged Near Infrared Spectroscopy for Measuring Relative Changes in Cerebral Blood Flow in Human Subjects
Not All Calcium Formulations Are Alike
Unadjusted Bivariate Two-Group Comparisons : When Simpler is Better
Low- Versus High-Chloride Content Intravenous Solutions for Critically Ill and Perioperative Adult Patients : A Systematic Review and Meta-analysis
In Response
Increased Hyperalgesia and Proinflammatory Cytokines in the Spinal Cord and Dorsal Root Ganglion After Surgery and/or Fentanyl Administration in Rats
Fundamentals of Anaesthesia, 4th ed
In Response
Safety and Effectiveness of a Novel Facemask for Positive Pressure Ventilation
The Analgesic Effect of Ultrasound-Guided Quadratus Lumborum Block After Cesarean Delivery : A Randomized Clinical Trial
In Response
Hypoxia and Postoperative Stroke : The Picture Is Still Not Clear
Ultrasound-Guided Dynamic Needle Tip Positioning Technique Versus Palpation Technique for Radial Arterial Cannulation in Adult Surgical Patients : A Randomized Controlled Trial
In Response
Least Injurious Mechanical Ventilation in Pulmonary Resection Surgery
General Anesthetics to Treat Major Depressive Disorder : Clinical Relevance and Underlying Mechanisms
Society for Obstetric Anesthesia and Perinatology 2017 Meeting Report
Cardiac Arrest in the Operating Room : Resuscitation and Management for the Anesthesiologist
Neuroplasty Is a Safe, Effective Procedure
Effect of Beam Steering on Echogenic and Nonechogenic Needle Visibility at 40°, 50°, and 60° Needle Insertion Angles
Validation of a New Method to Automatically Select Cases With Intraoperative Red Blood Cell Transfusion for Audit
Antiemetic Prophylaxis as a Marker of Health Care Disparities in the National Anesthesia Clinical Outcomes Registry
Healthcare Professionalism : Improving Practice Through Reflections on Workplace Dilemmas
Assessment of Tricuspid Annular Motion by Speckle Tracking in Anesthetized Patients Using Transesophageal Echocardiography
Only New Red Blood Cells for Orthotopic Liver Transplant?
Low Cardiac Output Syndrome After Adult Cardiac Surgery : Predictive Value of Peak Systolic Global Longitudinal Strain
The Pediatric Anesthesiology Workforce : Projecting Supply and Trends 2015–2035
In Response
Colloids and the Microcirculation
Unexpected Cardiac Computed Tomography Findings in Patients With Postoperative Myocardial Injury
Teacher and Trustee : Examining the Ethics of Experiential Learning in Transesophageal Echocardiography Education
Artificial Ventilation : A Basic Clinical Guide
Neuroprotective Effects of Fasudil, a Rho-Kinase Inhibitor, After Spinal Cord Ischemia and Reperfusion in Rats
The Society for Obstetric Anesthesia and Perinatology Consensus Statement on the Anesthetic Management of Pregnant and Postpartum Women Receiving Thromboprophylaxis or Higher Dose Anticoagulants
Tricuspid Regurgitation Due to Absent Tricuspid Valve Leaflet : Utility of Three-Dimensional Echocardiography
Can Lung Ultrasound Be the First-Line Tool for Evaluation of Intraoperative Hypoxemia?
Is It Time to Reconsider the Concepts of “Universal Donor” and “ABO Compatible” Transfusions?
The Anesthesia Records of Harvey Cushing and Ernest Codman
Type B Aortic Dissection Diagnosed by Left-Sided Transthoracic Ultrasonography in a Woman With Preeclampsia
Percutaneous Closure of Complex Membranous Ventricular Septal Defect Under Transesophageal Echocardiographic Guidance
Use of 3D Transesophageal Echocardiography and the Clock-Face Model to Localize and Facilitate Closure of a Mitral Paravalvular Defect
A Prospective International Multicentre Cohort Study of Intraoperative Heart Rate and Systolic Blood Pressure and Myocardial Injury After Noncardiac Surgery : Results of the VISION Study
Impact of Anesthetic Regimen on Remote Ischemic Preconditioning in the Rat Heart In Vivo
Healthcare Simulation Education : Evidence, Theory and Practice, 1st ed.
The Local, Global Perspective
A Left Ventricle to Left Atrial Appendage Fistula After Mitral Valve Replacement
Pressure Waveform Analysis
Anaesthesia for the Elderly Patient, 2nd ed.
The Effect of Adding Subarachnoid Epinephrine to Hyperbaric Bupivacaine and Morphine for Repeat Cesarean Delivery : A Double-Blind Prospective Randomized Control Trial
No Significant Association Between the Transfusion of Small Volumes of Leukocyte-Depleted Red Blood Cells and Mortality Over 7 Years of Follow-up in Patients Undergoing Cardiac Surgery : A Propensity Score Matched Analysis
Perioperative Patient Blood Management to Improve Outcomes
Incidence of Anaphylaxis Associated With Sugammadex
Evidence Basis for Regional Anesthesia in Ambulatory Arthroscopic Knee Surgery and Anterior Cruciate Ligament Reconstruction : Part II
Effect of Stellate Ganglion Block on the Regional Hemodynamics of the Upper Extremity : A Randomized Controlled Trial
Physiology and Role of Intraocular Pressure in Contemporary Anesthesia
Insight Into Our Technology : Anesthesia Information Management Systems
Fatigue Risk Management : The Impact of Anesthesiology Residents’ Work Schedules on Job Performance and a Review of Potential Countermeasures
Expression of Concern
Intraoperative Esmolol as an Adjunct for Perioperative Opioid and Postoperative Pain Reduction : A Systematic Review, Meta-analysis, and Meta-regression
Patient Harm in Cataract Surgery : A Series of Adverse Events in Massachusetts
Patient Blood Management in Pediatric Cardiac Surgery : A Review
Photoplethysmography and Heart Rate Variability for the Diagnosis of Preeclampsia
An Intraplantar Hypertonic Saline Assay in Mice for Rapid Screening of Analgesics
Pearls of Wisdom for High-Risk Laser Lead Extractions : A Focused Review
Preventing Adverse Events in Cataract Surgery : Recommendations From a Massachusetts Expert Panel
Incidence and Operative Factors Associated With Discretional Postoperative Mechanical Ventilation After General Surgery
Thermal A-δ Nociceptors, Identified by Transcriptomics, Express Higher Levels of Anesthesia-Sensitive Receptors Than Thermal C-Fibers and Are More Suppressible by Low-Dose Isoflurane
Truncated μ-Opioid Receptors With 6 Transmembrane Domains Are Essential for Opioid Analgesia
Higher Operating Table for Optimal Needle-Entry Angle and Less Discomfort During Spinal Anesthesia
Peripheral Nerve Blocks for Hip Fractures : A Cochrane Review
Research Productivity and Rankings of Anesthesiology Departments in Canada and the United States : The Relationship Between the h-Index and Other Common Metrics
The Technology of Video Laryngoscopy
Maternal Death Due to Amniotic Fluid Embolism : A National Study in France
The Effect of Zinc Lozenge on Postoperative Sore Throat : A Prospective Randomized, Double-Blinded, Placebo-Controlled Study
The Effect of Prophylactic Phenylephrine and Ephedrine Infusions on Umbilical Artery Blood pH in Women With Preeclampsia Undergoing Cesarean Delivery With Spinal Anesthesia : A Randomized, Double-Blind Trial
Preventing Mistransfusions : An Evaluation of Institutional Knowledge and a Response
The Relationship Between Women’s Intention to Request a Labor Epidural Analgesia, Actually Delivering With Labor Epidural Analgesia, and Postpartum Depression at 6 Weeks : A Prospective Observational Study
Incidence and Risk Factors of Coagulation Profile Derangement After Liver Surgery : Implications for the Use of Epidural Analgesia—A Retrospective Cohort Study
MicroRNAs as Clinical Biomarkers and Therapeutic Tools in Perioperative Medicine
Optimal Dose of Perineural Dexamethasone to Prolong Analgesia After Brachial Plexus Blockade : A Systematic Review and Meta-Analysis
Use of Regional Anesthesia for Outpatient Surgery Within the United States : A Prevalence Study Using a Nationwide Database
Endoscopic Versus Open Repair for Craniosynostosis in Infants Using Propensity Score Matching to Compare Outcomes : A Multicenter Study from the Pediatric Craniofacial Collaborative Group
Consensus Statement by the Congenital Cardiac Anesthesia Society : Milestones for the Pediatric Cardiac Anesthesia Fellowship
Perioperative Inflammation and Its Modulation by Anesthetics
Efficacy Outcome Measures for Pediatric Procedural Sedation Clinical Trials : An ACTTION Systematic Review
Minimizing the Harm of Accidental Awareness Under General Anesthesia : New Perspectives From Patients Misdiagnosed as Being in a Vegetative State
Dexmedetomidine Maintains Its Direct Cardioprotective Effect Against Ischemia/Reperfusion Injury in Hypertensive Hypertrophied Myocardium
Delineating the Trajectory of Cognitive Recovery From General Anesthesia in Older Adults : Design and Rationale of the TORIE (Trajectory of Recovery in the Elderly) Project
Postoperative Complications Affecting Survival After Cardiac Arrest in General Surgery Patients
Pediatric Anesthesiology Fellows’ Perception of Quality of Attending Supervision and Medical Errors
Validating the Physiologic Model HumMod as a Substitute for Clinical Trials Involving Acute Normovolemic Hemodilution
The Effect of Head Position on the Cross-sectional Area of the Subclavian Vein
Transesohageal Echocardiographic-Guided Transapical Neochord Implantation
Evaluation of the Augmented Infant Resuscitator : A Monitoring Device for Neonatal Bag-Valve-Mask Resuscitation
Transfusion of Older Red Blood Cells Increases the Risk of Acute Kidney Injury After Orthotopic Liver Transplantation : A Propensity Score Analysis
Anesthetic Considerations for Patients Undergoing Bronchial Thermoplasty
The Accuracy of a Handheld Ultrasound Device for Neuraxial Depth and Landmark Assessment : A Prospective Cohort Trial
Patients Undergoing Cesarean Delivery After Exposure to Oxytocin During Labor Require Higher Postpartum Oxytocin Doses
Trends in the Prevalence of Intraoperative Adverse Events at 2 Academic Hospitals After Implementation of a Mandatory Reporting System
Huntington Mice Demonstrate Diminished Pain Response in Inflammatory Pain Model
Understanding Infusion Pumps
Reductions in Average Lengths of Stays for Surgical Procedures Between the 2008 and 2014 United States National Inpatient Samples Were Not Associated With Greater Incidences of Use of Postacute Care Facilities
A Comparison of 3 Frailty Indices in Predicting Morbidity and Mortality After On-Pump Aortic Valve Replacement
Outcomes in Patients Undergoing Cardiac Surgery Who Decline Transfusion and Received Erythropoietin Compared to Patients Who Did Not : A Matched Cohort Study
Systemic Hypotension Following Intravenous Administration of Nonionic Contrast Medium During Computed Tomography : Iopromide Versus Iodixanol
Risk Stratification for Major Postoperative Complications in Patients Undergoing Intra-abdominal General Surgery Using Latent Class Analysis
The Opiorphin Analog STR-324 Decreases Sensory Hypersensitivity in a Rat Model of Neuropathic Pain
The Effect of Adductor Canal Block on Knee Extensor Muscle Strength 6 Weeks After Total Knee Arthroplasty : A Randomized, Controlled Trial
Core Temperature Monitoring in Obstetric Spinal Anesthesia Using an Ingestible Telemetric Sensor
Neuromuscular Monitoring in the Perioperative Period
The Coagulation Profile of End-Stage Liver Disease and Considerations for Intraoperative Management
Repeated Administration of Duloxetine Suppresses Neuropathic Pain by Accumulating Effects of Noradrenaline in the Spinal Cord
Brain Monitoring and the Depth of Anesthesia : Another Goldilocks Dilemma
Microparticle Release During Normal Cesarean Delivery
Perioperative Considerations for the Use of Sodium-Glucose Cotransporter-2 Inhibitors in Patients With Type 2 Diabetes
The Technology of Processed Electroencephalogram Monitoring Devices for Assessment of Depth of Anesthesia
Reduction in Operating Room Plasma Waste After Evidence-Based Quality Improvement Initiative
Regulatory Considerations for Physiological Closed-Loop Controlled Medical Devices Used for Automated Critical Care : Food and Drug Administration Workshop Discussion Topics
Randomized Controlled Trial of the Clinical Efficacy of Multiport Versus Uniport Wire-Reinforced Flexible Catheters for Labor Epidural Analgesia
Variability in the Use of Protective Mechanical Ventilation During General Anesthesia
More Than a Tick Box : Medical Checklist Development, Design, and Use
Targeting Hypoxia Signaling for Perioperative Organ Injury
Avoiding Complications From Patient Positioning for Intraocular Surgery
The Expected Role of the Anesthesiologist in Delivering Bad News
Addition of Nasal Cannula Can Either Impair or Enhance Preoxygenation With a Bag Valve Mask : A Randomized Crossover Design Study Comparing Oxygen Flow Rates
Improving Adherence to Intraoperative Lung-Protective Ventilation Strategies at a University Medical Center
Estimation of Stroke Volume and Stroke Volume Changes by Electrical Impedance Tomography
A Novel Method of Evaluating Key Factors for Success in a Multifaceted Critical Care Fellowship Using Data Envelopment Analysis
Blunt Traumatic Injury to the Aortic Root and Aortic Valve
Bispectral Index Measurements Are Not Degraded During Aeromedical Evacuations
Imaging Modalities for Correct Positioning of Percutaneous Right Ventricular Assist Device After Left Ventricular Assist Device Implantation
Improving the Success Rate of Chest Compression-Only CPR by Untrained Bystanders in Adult Out-of-Hospital Cardiac Arrest : Maintaining Airway Patency May Be the Way Forward
Implementation of a Standardized Transfusion Protocol for Cardiac Patients Treated With Venoarterial Extracorporeal Membrane Oxygenation Is Associated With Decreased Blood Component Utilization and May Improve Clinical Outcome
Inciting Events Associated With Lumbar Facet Joint Pain
The Effect of Glycopyrrolate on the Incidence of Hypotension and Vasopressor Requirement During Spinal Anesthesia for Cesarean Delivery : A Meta-analysis
Patient Survey of Referral From One Surgeon to Another to Reduce Maximum Waiting Time for Elective Surgery and Hours of Overutilized Operating Room Time
Baseline Morphine Consumption May Explain Between-Study Heterogeneity in Meta-analyses of Adjuvant Analgesics and Improve Precision and Accuracy of Effect Estimates
Acute Intracardiac Thrombosis and Pulmonary Thromboembolism After Cardiopulmonary Bypass : A Systematic Review of Reported Cases
Anesthesia Adverse Events Voluntarily Reported in the Veterans Health Administration and Lessons Learned
Tranexamic Acid Does Not Influence Cardioprotection by Ischemic Preconditioning and Remote Ischemic Preconditioning
Prophylactic Norepinephrine Infusion for Preventing Hypotension During Spinal Anesthesia for Cesarean Delivery
An Automated Critical Event Screening and Notification System to Facilitate Preanesthesia Record Review
Anesthetic Management of Narcolepsy Patients During Surgery : A Systematic Review
Respiratory System Mechanics During Low Versus High Positive End-Expiratory Pressure in Open Abdominal Surgery : A Substudy of PROVHILO Randomized Controlled Trial
Postpartum Tubal Sterilization : Making the Case for Urgency
Hospital-Based Acute Care Within 7 Days of Discharge After Outpatient Arthroscopic Shoulder Surgery
Labor Analgesia Onset With Dural Puncture Epidural Versus Traditional Epidural Using a 26-Gauge Whitacre Needle and 0.125% Bupivacaine Bolus : A Randomized Clinical Trial
Cardiac Output Measurements Based on the Pulse Wave Transit Time and Thoracic Impedance Exhibit Limited Agreement With Thermodilution Method During Orthotopic Liver Transplantation
Perioperative Temperature Measurement Considerations Relevant to Reporting Requirements for National Quality Programs Using Data From Anesthesia Information Management Systems
Improving Performance by Monitoring the Success Rate of Peripheral Nerve Blocks
Cardiorespiratory Alterations Following Acute Normovolemic Hemodilution in a Pediatric and an Adult Porcine Model : A Prospective Interventional Study
Retrograde Type B Aortic Dissection Caused by Intraaortic Balloon Counterpulsation
Comparison of the Mallampati Classification in Sitting and Supine Position to Predict Difficult Tracheal Intubation : A Prospective Observational Cohort Study
Prospective External Validation of Three Preoperative Risk Scores for Prediction of New Onset Atrial Fibrillation After Cardiac Surgery
Preoperative Warming Versus no Preoperative Warming for Maintenance of Normothermia in Women Receiving Intrathecal Morphine for Cesarean Delivery : A Single Blinded, Randomized Controlled Trial
Pediatric Preoperative Assessment : 6 Million Missed Opportunities for Childhood Obesity Education
Perioperative Outcomes of Robotic-Assisted Hysterectomy Compared With Open Hysterectomy
Evaluation of Pulmonary Artery Pressure Measurements in Severe Pulmonic Valve Insufficiency in the Absence of Tricuspid Regurgitation
Study Design Rigor in Animal-Experimental Research Published in Anesthesia Journals
Influence of Depth of Hypnosis on Pupillary Reactivity to a Standardized Tetanic Stimulus in Patients Under Propofol-Remifentanil Target–Controlled Infusion : A Crossover Randomized Pilot Study