Medicine and Health Sciences Commons^™

Sedation For Gi Endoscopy In The Morbidly Obese: Challenges And Possible Solutions, Lalitha Sundararaman, Basavana Goudra

Department of Anesthesiology Faculty Papers

With the increasing prevalence of obesity and morbid obesity, this subgroup's contribution to patients presenting for elective procedures requiring sedation is significant. Gastrointestinal (GI) procedures clearly form the largest group of such procedures. These procedures may be intended to treat obesity such as the insertion of an intragastric balloon or one or more unrelated procedures such as a screening colonoscopy and (or) diagnostic/therapeutic endoscopy. Regardless of the procedure, these patients pose significant challenges in terms of choice of sedatives, dosing, airway management, ventilation, and oxygenation. An understanding of dissimilarity in the handling of different groups of medications used by an …

Potential S1 Nerve Root Blocks Associated With Sacroiliac Joint Injections, Andrew Ng, Jesse Lou, Dajie Wang

Department of Anesthesiology Faculty Papers

BACKGROUND: Sacroiliac (SI) joint dysfunction is a common cause of lower back pain. The diagnosis of SI joint pain remains challenging. Sacroiliac joint injection remains the gold standard of diagnosis of SI joint pain as well as providing therapeutic effect. One complication related to SI joint injection is temporary numbness and weakness of the leg.

OBJECTIVES: To evaluate the anatomy of the SI joint and the flow of the contrast in the sacroiliac joint and to understand how local anesthetic can affect the nerve roots and cause temporary weakness and numbness of the leg.

METHODS: Patients who underwent SI joint …

Remimazolam And Its Place In The Current Landscape Of Procedural Sedation And General Anesthesia, Matthew Brohan, Janette Brohan, Basavana Goudra

Department of Anesthesiology Faculty Papers

Remimazolam was derived from its parent compound by adding an ester linkage into its structure so that the drug becomes a substrate for ester metabolism. As a result, it undergoes organ-independent ester hydrolysis, although the clinical benefits in terms of shorter recovery are not uniformly observed in clinical practice. Remimazolam is mainly tested in procedural sedation. In comparison to propofol, the current gold standard for procedural sedation, its proposed attractiveness is shorter wake-up times and a clear-headed recovery. Its clear advantages over propofol are better hemodynamic stability, lack of pain on injection and availability of a reversal agent in the …

Setting Up An Ambulatory Gi Endoscopy Suite In The Usa-Anesthesia And Sedation Challenges, Basavana Goudra

Department of Anesthesiology Faculty Papers

Gastrointestinal endoscopy units, both freestanding and associated with ambulatory surgical centers, are on the increase, and the trend is likely to continue. The concept is relatively new, and there are insufficient guidelines and a general dearth of information for prospective planners and physicians. Debate continues in areas such as the selection of patients, appropriateness of procedures, and access to tertiary care. Leaders often scramble to address both critical and non-critical issues, often after the center has opened to the public. They often encounter issues which were not anticipated. In this review, we have provided comprehensive and concise information on the …

Serum From Patients With Cirrhosis Undergoing Liver Transplantation Induces Permeability In Human Pulmonary Microvascular Endothelial Cells, Michael Bokoch, Fengyun Xu, Krishna Govindaraju, Elliot Lloyd, Kyle Tsutsui, Rishi Kothari, Dieter Adelmann, Jérémie Joffre, Judith Hellman

Department of Anesthesiology Faculty Papers

INTRODUCTION: Patients with cirrhosis undergoing liver transplantation frequently exhibit systemic inflammation, coagulation derangements, and edema, indicating endothelial dysfunction. This syndrome may worsen after ischemia-reperfusion injury of the liver graft, coincident with organ dysfunction that worsens patient outcomes. Little is known about changes in endothelial permeability during liver transplantation. We hypothesized that sera from these patients would increase permeability in cultured human endothelial cells

METHODS: Adults with cirrhosis presenting for liver transplantation provided consent for blood collection during surgery. Sera were prepared at five time points spanning the entire operation. The barrier function of human pulmonary microvascular endothelial cells in culture …

Randomized Controlled Trial Of Enhanced Recovery After Surgery Protocols In Live Kidney Donors: Eraskt Study, Jacob Saks, Uzung Yoon, Natalie Neiswinter, Eric Schwenk, Stephen Goldberg, Linh Nguyen, Marc Torjman, Elia Elia, Ashesh Shah

Department of Anesthesiology Faculty Papers

BACKGROUND: Enhanced recovery after surgery (ERAS) pathways represent a comprehensive approach to optimizing perioperative management and reducing hospital stay and cost. In living donor kidney transplantation, key impediments to postoperative discharge include pain, and opioid associated complications such as nausea, vomiting, and the return of gastrointestinal function.

METHODS: In this randomized controlled trial, living kidney transplantation donors were assigned to either the ERAS or control group. The ERAS group patients received 15 preoperative, 17 intraoperative, 19 postoperative element intervention. The control group received standard care. The ERAS group received a multimodal opioid sparing pain management including an intraoperative transverse abdominis …

Reversal Of Propofol-Induced Depression Of The Hypoxic Ventilatory Response By Bk-Channel Blocker Ena-001: A Randomized Controlled Trial, Simone Jansen, Maarten Van Lemmen, Erik Olofsen, Laurence Moss, Joseph Pergolizzi, Thomas Miller, Robert Colucci, Monique Van Velzen, Philip Kremer, Albert Dahan, Rutger Van Der Schrier, Marieke Niesters

Department of Medicine Faculty Papers

BACKGROUND: The use of anesthetics may result in depression of the hypoxic ventilatory response. Since there are no receptor-specific antagonists for most anesthetics, there is the need for agnostic respiratory stimulants that increase respiratory drive irrespective of its cause. The authors tested whether ENA-001, an agnostic respiratory stimulant that blocks carotid body BK-channels, could restore the hypoxic ventilatory response during propofol infusion. They hypothesize that ENA-001 is able to fully restore the hypoxic ventilatory response.

METHODS: In this randomized, double-blind crossover trial, 14 male and female healthy volunteers were randomized to receive placebo and low- and high-dose ENA-001 on three …

Differential Susceptibility To Propofol And Ketamine In Primary Cultures Of Young And Senesced Astrocytes, Liang Huang, Ferit Tuzer, Abigail Murtha, Michael Green, Claudio Torres, Henry Liu, Shadi Malaeb

Department of Anesthesiology Faculty Papers

The adverse effects of general anesthesia on the long-term cognition of young children and senior adults have become of concern in recent years. Previously, mechanistic and pathogenic investigations focused on neurons, and little is known about the effect of commonly used intravenous anesthetics such as propofol and ketamine on astrocytes. Recently, astrocyte dysfunction has been implicated in a wide range of age-related brain diseases. In this study, we examined the survival and viability of both young and senescent astrocytes in culture after adding propofol and ketamine to the media at varying strengths. Oxidative stimulus was applied to commercially available fetal …

Drug-Free Noninvasive Thermal Nerve Block: Validation Of Sham Devices, Michael Fishman, Ahish Chitneni, Alaa Abd-Elsayed, Samuel Grodofsky, Ashley Scherer, Brendan Schetzner, Malvina Klusek, Stephen Popielarski, Stephen Meloni, Steven Falowski, Philip Kim, Konstantin Slavin, Stephen Silberstein

Department of Jefferson Headache Center papers and presentations

Headache is a leading cause of disability and suffering. One major challenge in developing device treatments is demonstrating their efficacy given devices' often-high placebo rate. This paper reviews the importance of validating sham devices as part of finalizing the design for larger-scale prospective randomized controlled trials in patients with chronic headache as well as the results of a prospective, single-blind trial to validate two potential sham noninvasive thermal nerve block devices. Study participants were trained to self-administer thermal nerve block treatment using sham devices in an office visit. Two different sham systems with different temperature profiles were assessed. Devices were …

Angiotensin Ii In Liver Transplantation (Anglt-1): Protocol Of A Randomised, Double-Blind, Placebo-Controlled Trial., Michael Bokoch, Amy Tran, Erika Brinson, Sivan Marcus, Meghana Reddy, Elizabeth Sun, Garrett Roll, Manuel Pardo, Scott Fields, Dieter Adelmann, Rishi Kothari, Matthieu Legrand

Department of Anesthesiology Faculty Papers

INTRODUCTION: Catecholamine vasopressors such as norepinephrine are the standard drugs used to maintain mean arterial pressure during liver transplantation. At high doses, catecholamines may impair organ perfusion. Angiotensin II is a peptide vasoconstrictor that may improve renal perfusion pressure and glomerular filtration rate, a haemodynamic profile that could reduce acute kidney injury. Angiotensin II is approved for vasodilatory shock but has not been rigorously evaluated for treatment of hypotension during liver transplantation. The objective is to assess the efficacy of angiotensin II as a second-line vasopressor infusion during liver transplantation. This trial will establish the efficacy of angiotensin II in …

A 36-Year-Old Woman With Acute Liver Failure Following Acetaminophen Overdose, Raised Inr Of 8.7, And Normal Blood Viscosity Measured By Rotational Thromboelastometry (Rotem), Uzung Yoon, Manny Lai, Tho Nguyen, Elia S. Elia

Department of Anesthesiology Faculty Papers

BACKGROUND Fulminant hepatic failure (FHF) is commonly associated with elevated prothrombin time (PT) and international normalized ratio (INR). There is a commensurate decline in pro- and anti-hemostatic factors, and hemostatic function is rebalanced, not reflected in INR. This report presents the case of a 36-year-old woman with FHF following acetaminophen overdose, an increased INR above 8.7, and normal blood viscosity measured by rotational thromboelastometry (ROTEM). CASE REPORT A 36-year-old woman presented with FHF following an acetaminophen overdose. On arrival, she was lethargic but arousable and followed commands. Her King's College Criteria for acetaminophen toxicity was 2 and her MELD score …

Progressive Acceleration Of Insulin Exposure Over 7 Days Of Infusion Set Wear, Jasmin R. Kastner, Timothy S. Bailey, Poul Strange, Leon Shi, Keith A. Oberg, Paul J. Strasma, Jeffrey I. Joseph, Douglas B. Muchmore

Department of Anesthesiology Faculty Papers

Insulin exposure varies over 3 days of insulin infusion set (IIS) wear making day-to-day insulin dosing challenging for people with diabetes (PWD). Here we report insulin pharmacodynamic (PD) and pharmacokinetic (PK) data extending these observations to 7 days of IIS wear. PWD (A1C ≤8.5%, C-peptide tmax (P < 0.001), Cmax (P < 0.05), and mean residence time (P < 0.0001). Area under the insulin concentration curve (AUC0–300) declined by ∼24% from days 0 to 7 (P < 0.05). These results confirm/extend previous observations showing progressive acceleration of insulin exposure over IIS wear time. This may have implications for PWD and designers of closed-loop algorithms, although larger studies are necessary to confirm this. The study was registered in clinicaltrials.gov (NCT04398030).

Fibrodysplasia Ossificans Progressiva And Pregnancy: A Case Series And Review Of The Literature, Alexandra D Forrest, Danielle M Vuncannon, Jane E Ellis, Zvi Grunwald, Frederick S Kaplan

Department of Anesthesiology Faculty Papers

Objective: To evaluate maternal and fetal outcomes in pregnant patients with fibrodysplasia ossificans progressiva (FOP; OMIM#135100), an ultrarare genetic disorder characterized by progressive heterotopic ossification of soft tissues and cumulative disability.

Methods: This is a retrospective case series of three patients with FOP who were admitted to Grady Memorial Hospital in Atlanta, Georgia, from to February 2011 to July 2021.

Results: Three women delivered preterm infants at our institution. These cases posed unique anesthetic and obstetric technical challenges, particularly when securing the airway and performing cesarean delivery. Importantly, each patient received perioperative glucocorticoids for prevention of further heterotopic ossification.

Conclusion: …

Gene Therapy For Fibrodysplasia Ossificans Progressiva: Feasibility And Obstacles, Elisabeth M W Eekhoff, Ruben D De Ruiter, Bernard J Smilde, Ton Schoenmaker, Teun J De Vries, Coen Netelenbos, Edward C Hsiao, Christiaan Scott, Nobuhiko Haga, Zvi Grunwald, Carmen L De Cunto, Maja Di Rocco, Patricia L R Delai, Robert J Diecidue, Vrisha Madhuri, Tae-Joon Cho, Rolf Morhart, Clive S Friedman, Michael Zasloff, Gerard Pals, Jae-Hyuck Shim, Guangping Gao, Frederick Kaplan, Robert J Pignolo, Dimitra Micha

Department of Anesthesiology Faculty Papers

Fibrodysplasia ossificans progressiva (FOP) is a rare and devastating genetic disease, in which soft connective tissue is converted into heterotopic bone through an endochondral ossification process. Patients succumb early as they gradually become trapped in a second skeleton of heterotopic bone. Although the underlying genetic defect is long known, the inherent complexity of the disease has hindered the discovery of effective preventions and treatments. New developments in the gene therapy field have motivated its consideration as an attractive therapeutic option for FOP. However, the immune system's role in FOP activation and the as-yet unknown primary causative cell, are crucial issues …

Innovative Use Of Biotrace Tempo Pacemaker Lead Following Cardiac Surgery, Jordan E Goldhammer, Regina E Linganna, Douglas S Pfeil, Scott D Witzeling, Alec Vishnevsky, Nicholas Ruggiero, T. Sloane Guy

Department of Anesthesiology Faculty Papers

The Tempo® Temporary Pacing Lead is a temporary, transvenous, active fixation pacemaker lead used exclusively in structural heart and electrophysiology procedures since regulatory approval in 2016. We utilized the Tempo lead for four patients undergoing redo-robotic cardiac surgery in which surgical epicardial leads could not be placed. No failure-to-pace events were encountered and patients were able to participate in various levels of physical activity without limitation.

Early Short Course Of Neuromuscular Blocking Agents In Patients With Covid-19 Ards: A Propensity Score Analysis., Gianluigi Li Bassi, Kristen Gibbons, Jacky Y Suen, Heidi J Dalton, Nicole White, Amanda Corley, Sally Shrapnel, Samuel Hinton, Simon Forsyth, John G Laffey, Eddy Fan, Jonathon P Fanning, Mauro Panigada, Robert Bartlett, Daniel Brodie, Aidan Burrell, Davide Chiumello, Alyaa Elhazmi, Mariano Esperatti, Giacomo Grasselli, Carol Hodgson, Shingo Ichiba, Carlos Luna, Eva Marwali, Laura Merson, Srinivas Murthy, Alistair Nichol, Mark Ogino, Paolo Pelosi, Antoni Torres, Pauline Yeung Ng, John F Fraser

Department of Anesthesiology Faculty Papers

BACKGROUND: The role of neuromuscular blocking agents (NMBAs) in coronavirus disease 2019 (COVID-19) acute respiratory distress syndrome (ARDS) is not fully elucidated. Therefore, we aimed to investigate in COVID-19 patients with moderate-to-severe ARDS the impact of early use of NMBAs on 90-day mortality, through propensity score (PS) matching analysis.

METHODS: We analyzed a convenience sample of patients with COVID-19 and moderate-to-severe ARDS, admitted to 244 intensive care units within the COVID-19 Critical Care Consortium, from February 1, 2020, through October 31, 2021. Patients undergoing at least 2 days and up to 3 consecutive days of NMBAs (NMBA treatment), within 48 …

Recommendations For Effective Documentation In Regional Anesthesia: An Expert Panel Delphi Consensus Project, Hassan M Ahmed, Benjamin P Atterton, Gillian G Crowe, Jaime L Barratta, Mark Johnson, Eugene R. Viscusi, Sanjib Adhikary, Eric Albrecht, Karen Boretsky, Jan Boublik, Dara S Breslin, Kelly Byrne, Alan Ch'ng, Alwin Chuan, Patrick Conroy, Craig Daniel, Andrzej Daszkiewicz, Alain Delbos, Dan Sebastian Dirzu, Dmytro Dmytriiev, Paul Fennessy, H Barrie J Fischer, Henry Frizelle, Jeff Gadsden, Philippe Gautier, Rajnish K Gupta, Yavuz Gürkan, Harold David Hardman, William Harrop-Griffiths, Peter Hebbard, Nadia Hernandez, Jakub Hlasny, Gabriella Iohom, Vivian H Y Ip, Christina L Jeng, Rebecca L Johnson, Hari Kalagara, Brian Kinirons, Andrew Kenneth Lansdown, Jody C Leng, Yean Chin Lim, Clara Lobo, Danielle B Ludwin, Alan James Robert Macfarlane, Anthony T Machi, Padraig Mahon, Stephen Mannion, David H Mcleod, Peter Merjavy, Aleksejs Miscuks, Christopher H Mitchell, Eleni Moka, Peter Moran, Ann Ngui, Olga C Nin, Brian D O'Donnell, Amit Pawa, Anahi Perlas, Steven Porter, John-Paul Pozek, Humberto C Rebelo, Vicente Roqués, Kristopher M Schroeder, Gary Schwartz, Eric S. Schwenk, Luc Sermeus, George Shorten, Karthikeyan Srinivasan, Markus F Stevens, Kassiani Theodoraki, Lloyd R Turbitt, Luis Fernando Valdés-Vilches, Thomas Volk, Katrina Webster, T Wiesmann, Sylvia H Wilson, Morné Wolmarans, Glenn Woodworth, Andrew K Worek, E M Louise Moran

Department of Anesthesiology Faculty Papers

Background and objectives: Documentation is important for quality improvement, education, and research. There is currently a lack of recommendations regarding key aspects of documentation in regional anesthesia. The aim of this study was to establish recommendations for documentation in regional anesthesia.

Methods: Following the formation of the executive committee and a directed literature review, a long list of potential documentation components was created. A modified Delphi process was then employed to achieve consensus amongst a group of international experts in regional anesthesia. This consisted of 2 rounds of anonymous electronic voting and a final virtual round table discussion with live …

Effect Of Lipid-Lowering Medications In Patients With Coronary Artery Bypass Grafting Surgery Outcomes, Chunxia Shi, Zugui Zhang, Jordan E Goldhammer, David Li, Bob Kiaii, Victor Rudriguez, Douglas Boyd, David Lubarsky, Richard Applegate, Hong Liu

Department of Anesthesiology Faculty Papers

Background: Increased life expectancy and improved medical technology allow increasing numbers of elderly patients to undergo cardiac surgery. Elderly patients may be at greater risk of postoperative morbidity and mortality. Complications can lead to worsened quality of life, shortened life expectancy and higher healthcare costs. Reducing perioperative complications, especially severe adverse events, is key to improving outcomes in patients undergoing cardiac surgery. The objective of this study is to determine whether perioperative lipid-lowering medication use is associated with a reduced risk of complications and mortality after coronary artery bypass grafting (CABG) with cardiopulmonary bypass (CPB).

Methods: After IRB approval, we …

The Demographics Of Pain After Spinal Cord Injury: A Survey Of Our Model System., James J Bresnahan, Benjamin R Scoblionko, Devon Zorn, Daniel E Graves, Eugene R Viscusi

Department of Anesthesiology Faculty Papers

STUDY DESIGN: Survey OBJECTIVES: Better understand the demographics of pain after spinal cord injury (SCI).

SETTING: Academic Level 1 trauma center and SCI Model System.

METHODS: A survey including general demographic questions, questions of specific interest to the authors, the standardized SCI Pain Instrument (SCIPI), International SCI Pain Data Set, Basic form (ISCIPDS:B), Patient Reported Outcomes Measurement Information System (PROMIS) neuropathic 5a (PROMIS-Neur), and PROMIS nociceptive 5a (PROMIS-No).

RESULTS: 81% of individuals with SCI experience chronic pain and 86% of individuals with pain have neuropathic pain. 55% of individuals had shoulder pain. Females and those who recall >5/10 pain during …

Beyond The Raskin Protocol: Ketamine, Lidocaine, And Other Therapies For Refractory Chronic Migraine., Jeffrey J. Mojica, Eric S. Schwenk, Clinton Lauritsen, Stephanie J. Nahas

Department of Anesthesiology Faculty Papers

PURPOSE OF REVIEW: The purpose of this review is to discuss the available evidence and therapeutic considerations for intravenous drug therapy for refractory chronic migraine.

RECENT FINDINGS: In carefully monitored settings, the inpatient administration of intravenous lidocaine and ketamine can be successful in treating refractory chronic migraine. Many patients with refractory chronic migraine have experienced treatment failure with the Raskin protocol. The use of aggressive inpatient infusion therapy consisting of intravenous lidocaine or ketamine, along with other adjunctive medications, has become increasingly common for these patients when all other treatments have failed. There is a clear need for prospective studies …

In Response: Neuraxial And Peripheral Misconnection Events Leading To Wrong-Route Medication Errors, Eugene R. Viscusi, Vincent Hugo, Klaus Hoerauf, Frederick S Southwick

Department of Anesthesiology Faculty Papers

No abstract provided.

Spinal Anesthesia Or General Anesthesia For Hip Surgery In Older Adults, Mark D. Neuman, Rui Feng, Jeffrey L. Carson, Lakisha J. Gaskins, Derek Dillane, Daniel I. Sessler, Frederick Sieber, Jay Magaziner, Edward R. Marcantonio, Samir Mehta, Diane Menio, Sabry Ayad, Trevor Stone, Steven Papp, Eric S. Schwenk, Nabil Elkassabany, Mitchell Marshall, J. Douglas Jaffe, Charles Luke, Balram Sharma, Syed Azim, Robert A. Hymes, Ki-Jinn Chin, Richard Sheppard, Barry Perlman, Joshua Sappenfield, Ellen Hauck, Mark A. Hoeft, Mark Giska, Yatish Ranganath, Tiffany Tedore, Stephen Choi, Jinlei Li, M. Kwesi Kwofie, Antoun Nader, Robert D. Sanders, Brian F. S. Allen, Kamen Vlassakov, Stephen Kates, Lee A. Fleisher, James Dattilo, Ann Tierney, Alisa J. Stephens-Shields, Susan S. Ellenberg

Department of Anesthesiology Faculty Papers

Background: The effects of spinal anesthesia as compared with general anesthesia on the ability to walk in older adults undergoing surgery for hip fracture have not been well studied.

Methods: We conducted a pragmatic, randomized superiority trial to evaluate spinal anesthesia as compared with general anesthesia in previously ambulatory patients 50 years of age or older who were undergoing surgery for hip fracture at 46 U.S. and Canadian hospitals. Patients were randomly assigned in a 1:1 ratio to receive spinal or general anesthesia. The primary outcome was a composite of death or an inability to walk approximately 10 ft (3 …

Ketamine For Refractory Chronic Migraine: An Observational Pilot Study And Metabolite Analysis., Eric S. Schwenk, Marc C. Torjman, Ruin Moaddel, Jacqueline Lovett, Daniel Katz, William Denk, Clinton Lauritsen, Stephen D. Silberstein, Irving W. Wainer

Department of Anesthesiology Faculty Papers

Patients with refractory chronic migraine have substantial disability and have failed many acute and preventive medications. When aggressive intravenous therapy is indicated, both lidocaine and (R,S)-ketamine infusions have been used successfully to provide relief. Retrospective studies have shown that both agents may be associated with short-term analgesia. In this prospective, observational pilot study of 6 patients, we compared the effects of lidocaine and (R,S)-ketamine infusions and performed metabolite analyses of (R,S)-ketamine to determine its metabolic profile in this population. One of (R,S)-ketamine's metabolites, (2R,6R)-hydroxynorketamine, has been shown in animal studies to reduce pain, but human studies in patients undergoing continuous …

Anticoagulation With Argatroban In A Patient With Heparin-Induced Thrombocytopenia And Renal Insufficiency Undergoing Orthotopic Heart Transplantation, Michael Stuart Green, Johann Mathew, Christopher R Hoffman, Henry Liu

Department of Anesthesiology Faculty Papers

Unfractionated heparin is the anticoagulant of choice for cardiac surgery that requires cardiopulmonary bypass. However, it can cause serious side effects like heparin-induced thrombocytopenia (HIT), an immune-mediated process where antibodies are directed against heparin and platelet 4 complexes. In such cases, alternative pharmacologic strategies are implemented to facilitate safe bypass conditions. A woman with severe decompensated heart failure was heparinized for intra-aortic balloon pump and subsequent LVAD placement. On day 6, a fall in platelets from 113,000 to 26,000 was noted. She was diagnosed with HIT. Heparin was discontinued and replaced with an argatroban infusion for the duration of her …

Percutaneous Coronary Intervention Of Totally Occluded Coronary Venous Bypass Grafts: An Exercise In Futility?, Evan Nardone, Brandon M Madsen, Melissa Mccarey, D L Fischman, Nicholas Ruggiero, Paul Walinsky, Alec Vishnevsky, Michael P. Savage

Department of Medicine Faculty Papers

Background: Percutaneous coronary intervention (PCI) of diseased saphenous vein grafts (SVG) continues to pose a clinical challenge. Current PCI guidelines give a class III recommendation against performing PCI on chronically occluded SVG. However, contemporary outcomes after SVG intervention have incrementally improved with distal protection devices, intracoronary vasodilators, drug-eluting stents, and prolonged dual antiplatelet therapy.

Aim: To reassess the procedural and long-term outcomes of PCI for totally occluded SVG with contemporary techniques.

Methods: This was a retrospective observational study conducted at a single university hospital. The study population consisted of 35 consecutive patients undergoing PCI of totally occluded SVG. Post-procedure dual …

Ketamine In The Past, Present, And Future: Mechanisms, Metabolites, And Toxicity., Eric S. Schwenk, Basant Pradhan, Rohit Nalamasu, Lucas Stolle, Irving W. Wainer, Michael Cirullo, Alexander Olsen, Joseph V. Pergolizzi, Marc C. Torjman, Eugene R. Viscusi

Department of Anesthesiology Faculty Papers

PURPOSE OF REVIEW: While ketamine's analgesia has mostly been attributed to antagonism of N-methyl-D-aspartate receptors, evidence suggests multiple other pathways are involved in its antidepressant and possibly analgesic activity. These mechanisms and ketamine's role in the nociplastic pain paradigm are discussed. Animal studies demonstrating ketamine's neurotoxicity have unclear human translatability and findings from key rodent and human studies are presented.

RECENT FINDINGS: Ketamine's metabolites, and (2R,6R)-hydroxynorketamine in particular, may play a greater role in its clinical activity than previously believed. The activation of α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) and the mammalian target of rapamycin by ketamine are mechanisms that are still being …

Identifying The Roadblocks To Successful Pediatric Imaging Without Sedation Or Anesthesia, Iman Soliman, Ammie M. White, Md, J. Christopher Edgar, Phd, Laura Cadge, Ccls, Margaret Hamel-Daymon, Crnp, Sandra Saade-Lemus, Md, Rochelle Bagatell, Md, Elizabeth T. Drum, Md, Lisa States, Md

Phase 1

Background: Modern imaging modalities allow for assessment of a wide array of medical conditions. Because it is difficult for young children to remain still during lengthy imaging studies, there is a need for sedation and general anesthesia (GA). A growing literature, however, suggests that there may be deleterious neurocognitive effects of sedation/GA in young children. As such, it is in our patients’ best interest to critically evaluate the use of sedation/GA.

Objective: To identify the roadblocks to obtaining clinical pediatric magnetic resonance imaging (MRI) exams without sedation/GA.

Materials and Methods: Participants included 63 parents/guardians of 5- to 9-year-old patients who …

A Randomized Trial Of Manual Phone Calls Versus Automated Text Messages For Peripheral Nerve Block Follow-Ups., Gavyn Ooi, Eric S. Schwenk, Marc C. Torjman, Kent Berg

Department of Anesthesiology Faculty Papers

Mobile phone applications (apps) have been used for patient follow-up in the postoperative period, specifically to assess for complications and patient satisfaction. Few studies have evaluated their use in regional anesthesia. The objective of this study was to compare follow-up response rates using manual phone calls versus an automated patient outreach (APO) app for peripheral nerve block patients. We hypothesized that the response rate would be higher in the APO group. A mobile app, "JeffAnesthesia," was developed, which sends notifications to patients to answer survey questions in the app. We randomly assigned patients who received peripheral nerve blocks for postoperative …

Response To The Letter To The Editor By Hafer And Johnson Concerning 'Mechanism Of Action Of Htx-011: A Novel, Extended-Release, Dual-Acting Local Anesthetic Formulation For Postoperative Pain'., Thomas Ottoboni, Barry Quart, Jayne Pawasauskas, Joseph F. Dasta, Richard A. Pollak, Eugene R. Viscusi

Department of Anesthesiology Faculty Papers

No abstract provided.

Mepivacaine Versus Bupivacaine Spinal Anesthesia For Early Postoperative Ambulation., Eric S. Schwenk, Vincent P. Kasper, Jordan D. Smoker, Andrew M. Mendelson, Mathew S. Austin, Scot A. Brown, William J. Hozack, Alexa J. Cohen, Jonathan J. Li, Christopher S. Wahal, Jaime L. Baratta, Marc Torjman, Alyson C. Nemeth, Eric E. Czerwinski

Department of Anesthesiology Faculty Papers

BACKGROUND: Early ambulation after total hip arthroplasty predicts early discharge. Spinal anesthesia is preferred by many practices but can delay ambulation, especially with bupivacaine. Mepivacaine, an intermediate-acting local anesthetic, could enable earlier ambulation than bupivacaine. This study was designed to test the hypothesis that patients who received mepivacaine would ambulate earlier than those who received hyperbaric or isobaric bupivacaine for primary total hip arthroplasty.

METHODS: This randomized controlled trial included American Society of Anesthesiologists Physical Status I to III patients undergoing primary total hip arthroplasty. The patients were randomized 1:1:1 to 52.5 mg of mepivacaine, 11.25 mg of hyperbaric bupivacaine, …