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Henze IS, Meira C, Baron Toaldo M, Nolff MC, Steblaj B. Anaesthetic management of three Maine Coon cats undergoing hybrid intervention for treatment of cor triatriatum sinister. Vet Record Case Reports 2023. [DOI: 10.1002/vrc2.604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
Affiliation(s)
- Inken Sabine Henze
- Section of Anaesthesiology Department of Clinical Diagnostics and Services Vetsuisse Faculty of the University of Zurich Winterthurerstrasse Zurich Switzerland
| | - Carolina Meira
- Section of Anaesthesiology Department of Clinical Diagnostics and Services Vetsuisse Faculty of the University of Zurich Winterthurerstrasse Zurich Switzerland
| | - Marco Baron Toaldo
- Section of Cardiology Clinic for Small Animal Internal Medicine Vetsuisse Faculty of the University of Zurich Winterthurerstrasse Zurich Switzerland
| | - Mirja Christine Nolff
- Clinic for Small Animal Surgery Vetsuisse Faculty of the University of Zurich Winterthurerstrasse Zurich Switzerland
| | - Barbara Steblaj
- Section of Anaesthesiology Department of Clinical Diagnostics and Services Vetsuisse Faculty of the University of Zurich Winterthurerstrasse Zurich Switzerland
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Toolyodpun S, Laoruengthana A, Kositanurit I, Podjanasupawun S, Saenghirunvattana C, Pongpirul K. Effect of multiple analgesic pathways including local infiltration analgesia, peripheral nerve blocks, and intrathecal morphine for controlling pain after total knee arthroplasty. Eur J Orthop Surg Traumatol 2022:10.1007/s00590-022-03405-w. [PMID: 36260155 DOI: 10.1007/s00590-022-03405-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND We questioned whether the triple analgesic pathways procedure via local infiltration analgesia (LIA), peripheral nerve blocks, and intrathecal morphine (ITM) is superior to LIA only for controlling pain after Total Knee Arthroplasty (TKA). METHODS This retrospective study included 192 primary TKA patients. Group A (76 patients) received LIA only, Group B (61 patients) had ITM, adductor canal block and LIA, while Group C (55 patients) received ITM, femoral nerve block and LIA. A propensity score-matched analysis was used to compare visual analog scales (VAS) for pain intensity, total amount of morphine consumption (TMC), angle of knee flexion, and length of hospital stay (LHS). RESULTS Group A showed significantly higher VAS than Group B at 12 h (4.27 ± 2.70 vs 2.42 ± 2.35) and 18 h (4.24 ± 2.35 vs 2.18 ± 2.02), and significantly higher than Group C at 6 h (3.46 ± 3.07 vs 0.60 ± 1.50), 12 h (4.27 ± 2.70 vs 0.89 ± 1.48), and 18 h postoperative (4.24 ± 2.35 vs 1.82 ± 2.18). However, the VAS of Group C and B converged to equalize with Group A after 12 and 18 h, respectively. The TMC at 48 h postoperative of Group A was higher than that of Group B (p < 0.01). Nevertheless, there was no difference between groups in terms of knee flexion and LHS, except the LHS of Group B was longer than Group A (p = 0.04). CONCLUSION Triple analgesic pathways could provide a better initial analgesic profile. However, the pain seems to be rebound after resolution of nerve block and ITM, with potentially longer LHS.
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Affiliation(s)
- Siriluk Toolyodpun
- Department of Anesthesiology, Faculty of Medicine, Naresuan University, Phitsanulok, Thailand
| | - Artit Laoruengthana
- Department of Orthopaedics, Faculty of Medicine, Naresuan University, Phitsanulok, Thailand
| | - Inthiporn Kositanurit
- Department of Anesthesiology, Faculty of Medicine, Naresuan University, Phitsanulok, Thailand.
| | | | | | - Krit Pongpirul
- Department of Preventive and Social Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
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Smoroda A, Douin D, Morabito J, Lyman M, Prin M, Ahlgren B, Young A, Christensen E, Abrams BA, Weitzel N, Clendenen N. Year in Review 2021: Noteworthy Literature in Cardiothoracic Anesthesia. Semin Cardiothorac Vasc Anesth 2022; 26:107-119. [PMID: 35579926 PMCID: PMC9588253 DOI: 10.1177/10892532221100660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In 2021, progress in clinical science related to Cardiac Anesthesiology continued, but at a slower rate due to the ongoing pandemic and disruptions to clinical research. Most progress was incremental and addressed persistent questions related to our field. To identify articles for this review, we completed a structured review using our previously reported methods (1). Specifically, we used the search terms: "cardiac anesthesiology and outcomes" (n = 177), "cardiothoracic anesthesiology" (n = 34), "cardiac anesthesia," and "clinical outcomes" (n = 42) filtered on clinical trials and the year 2021 in PubMed. We also reviewed clinical trials from the most prominent clinical journals to identify additional studies for a narrative review. We then selected the most noteworthy publications for inclusion in this review and identified key themes.
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Affiliation(s)
- Aaron Smoroda
- University of Colorado School of Medicine, Aurora, CO, USA
| | - David Douin
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Joseph Morabito
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Matthew Lyman
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Meghan Prin
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Bryan Ahlgren
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Andrew Young
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | | | - Benjamin A Abrams
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Nathaen Weitzel
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Nathan Clendenen
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
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Kim WJ, Dacey M, Samarage HM, Zarrin D, Goel K, Chan C, Qi X, Wang A, Shivkumar K, Ardell J, Colby G. Sympathetic nervous system hyperactivity results in potent cerebral hypoperfusion in swine. Auton Neurosci 2022; 241:102987. [DOI: 10.1016/j.autneu.2022.102987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 04/14/2022] [Accepted: 05/04/2022] [Indexed: 11/28/2022]
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Bhat I, Arya VK, Mandal B, Jayant A, Dutta V, Rana SS. Postoperative hemodynamics after high spinal block with or without intrathecal morphine in cardiac surgical patients: a randomized-controlled trial. Can J Anaesth 2021; 68:825-834. [PMID: 33564993 DOI: 10.1007/s12630-021-01937-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 11/14/2020] [Accepted: 11/18/2020] [Indexed: 11/27/2022] Open
Abstract
PURPOSE There is some evidence for the use of intrathecal morphine as a means to provide prolonged analgesia in selective cardiac surgical patients; however, the hemodynamic effects of intrathecal morphine are not well defined. This study was designed to study the effect of intrathecal morphine on hemodynamic parameters in cardiac surgery patients. METHODS In a prospective, double-blind study, 100 adult cardiac surgical patients were randomized to receive either intrathecal 40 mg of 0.5% hyperbaric bupivacaine alone (intrathecal bupivacaine [ITB] group, n = 50) or intrathecal 250 µg of morphine added to 40 mg of 0.5% bupivacaine (intrathecal bupivacaine and morphine [ITBM] group, n = 50). Hemodynamic data, pain scores, rescue analgesic use, spirometry, and vasopressor use were recorded every four hours after surgery for 48 hr. The primary outcome was the incidence of vasoplegia in each group, which was defined as a cardiac index > 2.2 L·min-1·m-2 with the requirement of vasopressors to maintain the mean arterial pressure > 60 mmHg with the hemodynamic episode lasting > four hours. RESULTS Eighty-seven patients were analyzed (ITB group, n = 42, and ITBM group, n =45). The incidence of vasoplegia was higher in the ITBM group than in the ITB group [14 (31%) vs 5 (12%), respectively; relative risk, 2.6; 95% confidence interval [CI], 1.0 to 6.6; P = 0.04]. The mean (standard deviation [SD]) duration of vasoplegia was significantly longer in the ITBM group than in the ITB group [8.9 (3.0) hr vs 4.3 (0.4) hr, respectively; difference in means, 4.6; 95% CI, 3.7 to 5.5; P < 0.001]. CONCLUSION Intrathecal morphine added to bupivacaine for high spinal anesthesia increases the incidence and duration of vasoplegia in cardiac surgery patients. TRIAL REGISTRATION www.clinicaltrials.gov (NCT02825056); registered 19 June 2016.
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Affiliation(s)
- Imran Bhat
- Department of Anaesthesiology and Intensive Care, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Virendra K Arya
- Department of Anaesthesiology and Intensive Care, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
- Department of Anesthesiology, Perioperative and Pain Medicine, Max Rady College of Medicine, University of Manitoba, St. Boniface Hosptial, Winnipeg, MB, Canada.
| | - Banashree Mandal
- Department of Anaesthesiology and Intensive Care, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Aveek Jayant
- Department of Anaesthesiology and Critical Care Medicine, Amrita Institute of Medical Sciences, Kochi, India
| | - Vikas Dutta
- Department of Anesthesiology, Perioperative and Pain Medicine, Max Rady College of Medicine, University of Manitoba, St. Boniface Hosptial, Winnipeg, MB, Canada
| | - Sandeep Singh Rana
- Department of Cardiothoracic and Vascular Surgery, Post Graduate Institute of Medical Education and Research, Chandigarh, India
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Abstract
Escalating costs and change in the profile of patients presenting for cardiac surgery requires modification of perioperative management strategies. Regional anesthesia has played an integral part of many fast-track anesthesia protocols across North America and Europe. This review suggests that for patients undergoing coronary artery bypass graft surgery, the risk-to-benefit ratio is in favor of epidural and spinal anesthesia, provided there are no specific contraindications and the guidelines for the use of regional techniques in cardiac surgery are followed. Patients managed with regional techniques seem to benefit from superior postoperative analgesia, shorter postoperative ventilation, reduced incidence of supraventricular arrhythmia, and lower rates of perioperative myocardial infarction. The results of this analysis suggest that for each episode of neurologic complication, 20 myocardial infarctions and 76 episodes of atrial fibrillation would be prevented, thus, we would consider the regional anesthesia and analgesia to be an effective strategy that improves perioperative morbidity. However, other treatment modalities such as the addition of calcium channel blockers, aspirin, and beating heart surgery, are also suggested to be beneficial in cardiac surgical patients and may impose less risk than the use of regional techniques. We believe that the results presented in this review are encouraging enough to permit continued investigation. A prospective, randomized, controlled multicenter trial needs to be adequately powered to answer important clinical questions and allow for a long-term follow-up.
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Affiliation(s)
- George Djaiani
- Department of Anesthesiology, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada.
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Abstract
There are numerous sedatives and analgesics used in critical care medicine today; these medications are used on critically ill patients, many of whom have heart disease, including coronary artery disease or congestive heart failure. The purpose of this review is to recognize the effects of these medications on the heart. Studies that evaluated the effects of sedatives and analgesics on normal individuals or on those with heart disease were reviewed. Current choices for sustained sedation in the critically ill include the benzodiazepines, morphine, propofol, and etomidate. Each of these medications has their particular advantages and disadvantages. Benzodiazepines provide the greatest amnesia and cardiovascular safety but they can cause significant hypotension in the hemodynamically unstable patient. Morphine provides analgesia and cardioprotective activity after ischemia, although the large observational study CRUSADE showed increased mortality rate in those patients with non-ST segment elevation myocardial infarction who received morphine. Propofol is the most easily titratable drug with cardioprotective features, but its use must be accompanied with great attention to possible development of propofol infusion syndrome, which is a deadly disease, especially in patients with head injury and those with septic shock receiving vasopressors. Etomidate has a rapid onset effect and short period of action with great hemodynamic stability even in patients with shock and hypovolemia, but the incidence of adrenal insufficiency during infusion, not bolus doses, may cause deterioration in the circulatory stability. In conclusion, the sedatives and analgesics mentioned here have characteristics that give them a cardiovascular safety profile useful in critically ill patients. However, use of these drugs on an individual basis is dependent on each agent's safety and efficacy.
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Li R, Wong GTC, Wong TM, Zhang Y, Xia Z, Irwin MG. Intrathecal Morphine Preconditioning Induces Cardioprotection via Activation of Delta, Kappa, and Mu Opioid Receptors in Rats. Anesth Analg 2009; 108:23-9. [DOI: 10.1213/ane.0b013e3181884ba6] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Abstract
UNLABELLED Systemically-administered morphine reduces infarct size in rat models of myocardial ischemia-reperfusion. We sought to determine whether much smaller doses of spinally-administered morphine offer a similar cardioprotective benefit. Barbiturate-anesthetized, open-chested, Wistar rats with chronic indwelling thoracic intrathecal catheters were instrumented for hemodynamic measurements and subjected to 30 min of coronary occlusion and 90 min of reperfusion. Myocardial infarct size was determined using triphenyl-tetrazolium staining. Rats were randomly assigned to receive intrathecal (IT) 0.9% saline (vehicle), IV morphine (0.3 mg/kg) plus IT saline, small-dose IT morphine (0.3 microg/kg), or large-dose IT morphine (3 microg/kg) 20 min before occlusion. IV and both doses of IT morphine reduced infarct size, defined as area of necrosis expressed as a percentage of area at risk (%AN/AAR), as compared with vehicle. The %AN/AAR group means were as follows: IV (n = 7), 30% +/- 6%; IT(small-dose) (n = 9), 30% +/- 5%; IT(large-dose) (n = 9), 18% +/- 4%; and vehicle (n = 10), 47% +/- 5%. There were no significant differences in infarct size among the morphine-pretreated rats. During ischemia-reperfusion, heart rate was unchanged from baseline in the IT(large-dose) group, whereas in the IT(small-dose), IV and vehicle groups, significant declines in heart rate occurred. Changes in arterial blood pressure were similar among groups. These results indicate that IT morphine reduces infarct size in rats, and this benefit is as great as that provided by IV morphine administration. IMPLICATIONS Our findings suggest that spinally-administered morphine provides a previously unrecognized cardioprotective benefit. In anesthetized rats subjected to ischemia-reperfusion injury, we show that very small doses of intrathecal morphine reduce infarct size in rats, and this benefit is as great as that provided by much larger doses of IV morphine.
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Affiliation(s)
- Leanne Groban
- From the Department of Anesthesiology, Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina
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Abstract
UNLABELLED Opioids, both endogenous and exogenous, have a strong influence on the renal function through different mechanisms, producing changes in the renal excretion of water and sodium. Several studies have demonstrated that opioids influence renal function, according to the agonist profile used. Mu, kappa, and delta agonists produce different renal effects, although the mechanisms remain unclear. Experimental data have given the input for a possible therapeutic role of kappa agonists for some specific conditions, for example, in treating water retention or hyponatremia occurring in patients who have hepatic cirrhosis with ascites. On the other hand, changes in renal function might strongly condition the use of opioids in the clinical setting, and the knowledge of the relationship between opioids and renal function is mandatory for a tailored approach to accommodate the individual responses in terms of pain intensity, tolerance, and adverse effects experienced by these groups of patients. The influence of renal function when using different opioids in the clinical setting is reviewed, as well as problems related to transplantation, renal damage induced by opioid addiction, and problems related to the use of opioid antagonists in such conditions. PERSPECTIVE Endogenous opioids exert physiologic effects on renal function, and the use of opioids may have an influence on renal activity. Renal impairment has a serious impact on the clearance of most opioids used in the clinical setting. Biochemical and clinical monitoring is mandatory to prevent serious complications.
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Ikeda Y, Nishikawa K, Ohashi K, Mori T, Asada A. Epidural clonidine suppresses the baroreceptor-sympathetic response depending on isoflurane concentrations in cats. Anesth Analg 2003; 97:748-754. [PMID: 12933395 DOI: 10.1213/01.ane.0000075841.37183.a4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Epidural administration of clonidine induces hypotension and bradycardia secondary to decreased sympathetic nerve activity. In this study, we sought to elucidate the change in baroreflex response caused by epidural clonidine. Thirty-six cats were allocated to six groups (n = 6 each) and were given either thoracic epidural clonidine 4 micro g/kg or lidocaine 2 mg/kg during 0.5, 1.0, or 1.5 minimum alveolar anesthetic concentration (MAC) isoflurane anesthesia. Heart rate (HR), mean arterial blood pressure (MAP), and cardiac sympathetic nerve activity (CSNA) were measured. Depressor and pressor responses were induced by IV nitroprusside 10 micro g/kg and phenylephrine 10 micro g/kg, respectively. Baroreflex was evaluated by the change in both CSNA and HR relative to the peak change in MAP (deltaCSNA/deltaMAP and deltaHR/deltaMAP, respectively). These measurements were performed before and 30 min after epidural drug administration. Epidural clonidine and lidocaine decreased HR, MAP, and CSNA by similar extents. deltaCSNA/deltaMAP and deltaHR/deltaMAP for depressor response were suppressed with epidural lidocaine and clonidine in all groups but the clonidine 0.5 MAC isoflurane group (0.197 +/- 0.053 to 0.063 +/- 0.014 and 0.717 +/- 0.156 to 0.177 +/- 0.038, respectively, by epidural lidocaine [P < 0.05] but 0.221 +/- 0.028 to 0.164 +/- 0.041 and 0.721 +/- 0.177 to 0.945 +/- 0.239, respectively, by epidural clonidine during 0.5 MAC isoflurane). Those for pressor response were suppressed in all groups. We conclude that thoracic epidural clonidine suppresses baroreflex gain during isoflurane anesthesia >1.0 MAC but may offer certain advantages compared with epidural lidocaine during 0.5 MAC isoflurane by virtue of preserving baroreflex sensitivity when inadvertent hypotension occurs.
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Affiliation(s)
- Yoshikazu Ikeda
- *Department of Anesthesiology and Intensive Care Medicine, Osaka City University Medical School, Osaka, Japan; and †Department of Anesthesia, Hoshigaoka Kosei-nenkin Hospital, Osaka, Japan
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Abstract
There are conflicting reports for the role of endogenous opioids on sympathetic and cardiovascular responses to exercise in humans. A number of studies have utilized naloxone (an opioid-receptor antagonist) to investigate the effect of opioids during exercise. In the present study, we examined the effect of morphine (an opioid-receptor agonist) on sympathetic and cardiovascular responses at rest and during isometric handgrip (IHG). Eleven subjects performed 2 min of IHG (30% maximum) followed by 2 min of postexercise muscle ischemia (PEMI) before and after systemic infusion of morphine (0.075 mg/kg loading dose + 1 mg/h maintenance) or placebo (saline) in double-blinded experiments on separate days. Morphine increased resting muscle sympathetic nerve activity (MSNA; 17 +/- 2 to 22 +/- 2 bursts/min; P < 0.01) and increased mean arterial pressure (MAP; 87 +/- 2 to 91 +/- 2 mmHg; P < 0.02), but it decreased heart rate (HR; 61 +/- 4 to 59 +/- 3; P < 0.01). However, IHG elicited similar increases for MSNA, MAP, and HR between the control and morphine trial (drug x exercise interaction = not significant). Moreover, responses to PEMI were not different. Placebo had no effect on resting, IHG, and PEMI responses. We conclude that morphine modulates cardiovascular and sympathetic responses at rest but not during isometric exercise.
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Affiliation(s)
- Jason R Carter
- Division of Cardiology, Department of Medicine, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA
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