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Demir E, İnam O, Silah H, Karimi-Maleh H. Studies of mechanism, kinetic model and determination of bupivacaine and its application pharmaceutical forms. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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2
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Purdy M, Kinnunen M, Kokki M, Anttila M, Eskelinen M, Hautajärvi H, Lehtonen M, Kokki H. A prospective, randomized, open label, controlled study investigating the efficiency and safety of 3 different methods of rectus sheath block analgesia following midline laparotomy. Medicine (Baltimore) 2018; 97:e9968. [PMID: 29443788 PMCID: PMC5839819 DOI: 10.1097/md.0000000000009968] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND There is a controversy regarding the efficacy of rectus sheath block (RSB). The aim of the present study was to evaluate analgesic efficacy and safety of three different methods of RSB in postoperative pain management after midline laparotomy. METHODS A prospective, randomized, controlled, open-label clinical trial with 4 parallel groups was conducted in a tertiary care hospital in Finland. A total of 57 patients undergoing midline laparotomy were randomized to the control group (n = 12) or to 1 of the 3 active RSB analgesia groups: single-dose (n = 16), repeated-doses (n = 12), or continuous infusion (n = 17). Opioid consumption with iv-patient-controlled analgesia pump was recorded, and pain scores and patients' satisfaction were surveyed on an 11-point numeric rating scale for the first 48 postoperative h. Plasma concentrations of oxycodone and levobupivacaine were analyzed. All adverse events during the hospital stay were recorded. RESULTS Oxycodone consumption was less during the first 12 h in the repeated-doses and in the continuous infusion groups (P = .07) and in numerical values up to 48 h in the repeated-doses group. Plasma oxycodone concentrations were similar in all 4 groups. Pain scores were lower in the repeated-doses group when coughing during the first 4 h (P = .048 vs. control group), and at rest on the first postoperative morning (P = .034 vs. the other 3 groups) and at 24 h (P = .006 vs. the single-dose group). All plasma concentrations of levobupivacaine were safe. The patients' satisfaction was better in the repeated-doses group compared with the control group (P = .025). No serious or unexpected adverse events were reported. CONCLUSIONS RSB analgesia with repeated-doses seems to have opioid sparing efficacy, and it may enhance pain relief and patients' satisfaction after midline laparotomy.
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Affiliation(s)
- Martin Purdy
- Department of Surgery, Kanta-Häme Central Hospital, Hämeenlinna
- School of Medicine, University of Eastern Finland
| | | | - Merja Kokki
- School of Medicine, University of Eastern Finland
- Department of Anesthesia and Operative Services, Kuopio University Hospital
| | - Maarit Anttila
- Departments of Gynecology and Oncology, Kuopio University Hospital
| | - Matti Eskelinen
- School of Medicine, University of Eastern Finland
- Department of Surgery, Kuopio University Hospital, Kuopio
| | | | - Marko Lehtonen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Hannu Kokki
- School of Medicine, University of Eastern Finland
- Department of Anesthesia and Operative Services, Kuopio University Hospital
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Population Pharmacokinetic-Pharmacodynamic Modeling of Ropivacaine in Spinal Anesthesia. Clin Pharmacokinet 2017; 57:1135-1147. [DOI: 10.1007/s40262-017-0617-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Heinonen JA, Schramko AA, Skrifvars MB, Litonius E, Backman JT, Mervaala E, Rosenberg PH. The effects of intravenous lipid emulsion on hemodynamic recovery and myocardial cell mitochondrial function after bupivacaine toxicity in anesthetized pigs. Hum Exp Toxicol 2016; 36:365-375. [DOI: 10.1177/0960327116650010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Local anesthetic toxicity is thought to be mediated partly by inhibition of cardiac mitochondrial function. Intravenous (i.v.) lipid emulsion may overcome this energy depletion, but doses larger than currently recommended may be needed for rescue effect. In this randomized study with anesthetized pigs, we compared the effect of a large dose, 4 mL/kg, of i.v. 20% Intralipid® ( n = 7) with Ringer’s acetate ( n = 6) on cardiovascular recovery after a cardiotoxic dose of bupivacaine. We also examined mitochondrial respiratory function in myocardial cell homogenates analyzed promptly after needle biopsies from the animals. Bupivacaine plasma concentrations were quantified from plasma samples. Arterial blood pressure recovered faster and systemic vascular resistance rose more rapidly after Intralipid than Ringer’s acetate administration ( p < 0.0001), but Intralipid did not increase cardiac index or left ventricular ejection fraction. The lipid-based mitochondrial respiration was stimulated by approximately 30% after Intralipid ( p < 0.05) but unaffected by Ringer’s acetate. The mean (standard deviation) area under the concentration–time curve (AUC) of total bupivacaine was greater after Intralipid (105.2 (13.6) mg·min/L) than after Ringer’s acetate (88.1 (7.1) mg·min/L) ( p = 0.019). After Intralipid, the AUC of the lipid-un-entrapped bupivacaine portion (97.0 (14.5) mg·min/L) was 8% lower than that of total bupivacaine ( p < 0.0001). To conclude, 4 mL/kg of Intralipid expedited cardiovascular recovery from bupivacaine cardiotoxicity mainly by increasing systemic vascular resistance. The increased myocardial mitochondrial respiration and bupivacaine entrapment after Intralipid did not improve cardiac function.
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Affiliation(s)
- JA Heinonen
- Department of Anesthesiology and Intensive Care Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - AA Schramko
- Department of Anesthesiology and Intensive Care Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - MB Skrifvars
- Department of Anesthesiology and Intensive Care Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - E Litonius
- Department of Anesthesia and Perioperative Care, University of California, San Francisco, CA, USA
| | - JT Backman
- Department of Clinical Pharmacology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - E Mervaala
- Department of Pharmacology, University of Helsinki, Helsinki, Finland
| | - PH Rosenberg
- Department of Anesthesiology and Intensive Care Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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Heinonen JA, Skrifvars MB, Haasio J, Backman JT, Rosenberg PH, Litonius E. Intravenous Lipid Emulsion for Levobupivacaine Intoxication in Acidotic and Hypoxaemic Pigs. Anaesth Intensive Care 2016; 44:270-7. [DOI: 10.1177/0310057x1604400214] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Intravenous lipid emulsion is, in some countries, the recommended treatment for local anaesthetic toxicity. Systemic local anaesthetic toxicity results in hypoxaemia and acidosis, and whether this influences the effects of lipid therapy on drug concentrations and cardiovascular recovery is currently unknown. Twenty anaesthetised pigs were given a 3 mg/kg bolus of levobupivacaine followed by a five-minute phase of hypoventilation and 1 mmol/kg of lactic acid over one minute. After lactic acid infusion, pigs were treated, in randomised order, with either 20% lipid emulsion or Ringer's acetate for 30 minutes: a 1.5 ml/kg bolus followed by a 0.25 ml/kg/minute infusion. Haemodynamic parameters were recorded and blood samples were collected for pharmacokinetic analysis. There was no difference between the groups in the area under the plasma levobupivacaine concentration–time curve (AUC) or between that and AUC of unentrapped levobupivacaine in the Lipid group, or in the plasma half-lives. The cardiovascular outcome and normalisation of the electrocardiogram were similar in both groups. Five pigs developed marked hypotension: one in both groups died, while two in the Lipid group and one in the Ringer group needed adrenaline. Administration of lipid emulsion did not improve cardiovascular recovery from levobupivacaine toxicity exacerbated by acidosis and hypoxaemia. Lipid emulsion did not entrap levobupivacaine or affect levobupivacaine pharmacokinetics.
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Affiliation(s)
- J. A. Heinonen
- Department of Anaesthesia and Intensive Care Medicine, University of Helsinki, Helsinki, Finland
| | - M. B. Skrifvars
- Department of Anaesthesia and Intensive Care Medicine, Helsinki University Hospital, Helsinki, Finland
| | - J. Haasio
- Department of Anaesthesia and Intensive Care Medicine, Helsinki University Hospital, Helsinki, Finland
| | - J. T. Backman
- Department of Clinical Pharmacology, University of Helsinki and HUSLAB, Helsinki University Hospital, Helsinki, Finland
| | - P. H. Rosenberg
- Department of Anaesthesia and Intensive Care Medicine, Helsinki University Hospital, Helsinki, Finland
| | - E. Litonius
- Department of Anaesthesia and Intensive Care Medicine, Helsinki University Hospital, Helsinki, Finland
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Schmidt B, Ohri R, Wang JCF, Blaskovich P, Kesselring A, Scarborough N, Herman C, Strichartz G. Local pathology and systemic serum bupivacaine after subcutaneous delivery of slow-releasing bupivacaine microspheres. Anesth Analg 2015; 120:36-44. [PMID: 25360482 DOI: 10.1213/ane.0000000000000507] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Prolonged local anesthesia, particularly desirable to minimize acute and chronic postoperative pain, has been provided by microspheres that slowly release bupivacaine (MS-Bup). In this study, we report on the systemic drug concentrations and the local dermatopathology that occur after subcutaneous injection of MS-Bup. METHODS Rats (approximately 300 g) were injected under the dorsolumbar skin with MS-Bup containing 40 mg of bupivacaine (base) or with 0.4 mL of 0.5% bupivacaine-HCl (BupHCl; 1.78 mg bupivacaine). Blood was drawn, under sevoflurane anesthesia, at 10 minutes to 144 hours, and the serum analyzed for total bupivacaine by liquid chromatography-tandem mass spectrometry. In different animals, skin punch biopsies (4 mm) were taken at 1, 3, 7, 14, and 30 days after the same drug injections, sectioned at 5 μm, and stained with hematoxylin-eosin. Samples from skin injected with BupHCl, with MS-Bup suspended in carboxymethyl cellulose (MS-Bup.CMC), or in methyl cellulose (MS-Bup.MC) were compared with their respective drug-free controls (placebos). RESULTS Serum bupivacaine reached a maximal average value (n = 8) of 194.9 ng/mL at 8 hours after injection of MS-Bup (95% upper prediction limit = 230.2 ng/mL), compared with the maximal average (n = 6) serum level of 374.9 ng/mL (95% prediction limit = 470.6 ng/mL) at 30 minutes after injection of BupHCl. Serum bupivacaine decreased to undetectable levels (<3.23 ng/mL) at 8 hours after BupHCl and was detectable at approximately 20% of the maximal value at 144 hours after MS-Bup injection. BupHCl injection resulted in moderate lymphocytic infiltration of skeletal muscle at 1 and 3 days. MS-Bup.CMC and placebo-CMC caused extensive infiltration of macrophages, lymphocytes, and some neutrophils at 1 to 7 days, whereas MS-Bup.MC and placebo-MC caused only mild inflammation. CONCLUSIONS Subcutaneous administration of microspheres releasing bupivacaine results in lower blood levels lasting for much longer times than those from bupivacaine solution.
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Affiliation(s)
- Birgitta Schmidt
- From the Division of Dermatopathology, Department of Pathology, Children's Hospital, Boston, Massachusetts; Covidien Surgical Solutions, Bedford, Massachusetts; Pain Research Center, Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham and Women's Hospital, Boston, Massachusetts; EKG Life Science Solutions, St. Louis, Missouri; and Mallinckrodt Pharmaceuticals, St. Louis, Missouri
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A critical review of microextraction by packed sorbent as a sample preparation approach in drug bioanalysis. Bioanalysis 2013; 5:1409-42. [DOI: 10.4155/bio.13.92] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Sample preparation is widely accepted as the most labor-intensive and error-prone part of the bioanalytical process. The recent advances in this field have been focused on the miniaturization and integration of sample preparation online with analytical instrumentation, in order to reduce laboratory workload and increase analytical performance. From this perspective, microextraction by packed sorbent (MEPS) has emerged in the last few years as a powerful sample preparation approach suitable to be easily automated with liquid and gas chromatographic systems applied in a variety of bioanalytical areas (pharmaceutical, clinical, toxicological, environmental and food research). This paper aims to provide an overview and a critical discussion of recent bioanalytical methods reported in literature based on MEPS, with special emphasis on those developed for the quantification of therapeutic drugs and/or metabolites in biological samples. The advantages and some limitations of MEPS, as well as its comparison with other extraction techniques, are also addressed herein.
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Litonius E, Lokajova J, Yohannes G, Neuvonen PJ, Holopainen JM, Rosenberg PH, Wiedmer SK. In vitro and in vivo entrapment of bupivacaine by lipid dispersions. J Chromatogr A 2012; 1254:125-31. [PMID: 22832037 DOI: 10.1016/j.chroma.2012.07.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 07/04/2012] [Accepted: 07/05/2012] [Indexed: 11/18/2022]
Abstract
Intravenous lipid emulsion is recommended as treatment for local anesthetic intoxication based on the hypothesis that the lipophilic drug is entrapped by the lipid phase created in plasma. We compared a 15.6 mM 80/20 mol% phosphatidyl choline (PC)/phosphatidyl glycerol (PG)-based liposome dispersion with the commercially available Intralipid® emulsion in a pig model of local anesthetic intoxication. Bupivacaine-lipid interactions were studied by electrokinetic capillary chromatography. Multilamellar vesicles were used in the first in vivo experiment series. This series was interrupted when the liposome dispersion was discovered to cause cardiovascular collapse. The toxicity was decreased by an optimized sonication of the 50% diluted liposome dispersion (7.8 mM). Twenty anesthetized pigs were then infused with either sonicated PC/PG liposome dispersion or Intralipid®, following infusion of a toxic dose of bupivacaine which decreased the mean arterial pressure by 50% from baseline. Bupivacaine concentrations were quantified in blood samples using liquid chromatography/mass spectrometry. No significant difference in the context-sensitive plasma half-life of bupivacaine was detected (p=0.932). After 30 min of lipid infusion, the bupivacaine concentration was 8.2±1.5 mg/L in the PC/PG group and 7.8±1.8 mg/L in the Intralipid® group, with no difference between groups (p=0.591). No difference in hemodynamic recovery was detected between groups (p > 0.05).
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Affiliation(s)
- Erik Litonius
- Anaesthesiology and Intensive Care Medicine, Helsinki University Central Hospital and University of Helsinki, Finland.
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Baniceru M, Manda CV, Popescu SM. Chromatographic analysis of local anesthetics in biological samples. J Pharm Biomed Anal 2011; 54:1-12. [DOI: 10.1016/j.jpba.2010.07.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2010] [Revised: 07/10/2010] [Accepted: 07/13/2010] [Indexed: 10/19/2022]
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High-Performance Liquid Chromatography Using UV Detection for the Simultaneous Quantification of Ropivacaine and Bupivacaine in Human Plasma. Ther Drug Monit 2009; 31:753-7. [DOI: 10.1097/ftd.0b013e3181bc8014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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