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da Silva DJ, Gramcianinov GB, Jorge PZ, Malaquias VB, Mori AA, Hirata MH, Lopes SAM, Bueno LA, Champeau M, Carastan DJ. PVC containing silver nanoparticles with antimicrobial properties effective against SARS-CoV-2. Front Chem 2023; 11:1083399. [PMID: 36993814 PMCID: PMC10042293 DOI: 10.3389/fchem.2023.1083399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 02/23/2023] [Indexed: 03/16/2023] Open
Abstract
Poly (vinyl chloride) (PVC) is commonly used to manufacture biomedical devices and hospital components, but it does not present antimicrobial activity enough to prevent biofouling. With the emergence of new microorganisms and viruses, such as Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) that was responsible for the global pandemic caused by Coronavirus Disease 2019 (COVID-19), it is evident the importance of the development of self-disinfectant PVC for hospital environments and medical clinics where infected people remain for a long time. In this contribution, PVC nanocomposites with silver nanoparticles (AgNPs) were prepared in the molten state. AgNPs are well-known as antimicrobial agents suitable for designing antimicrobial polymer nanocomposites. Adding 0.1 to 0.5 wt% AgNPs significantly reduced Young’s modulus and ultimate tensile strength of PVC due to the emergence of microstructural defects in the PVC/AgNP nanocomposites, but the impact strength did not change significantly. Furthermore, nanocomposites have a higher yellowness index (YI) and lower optical bandgap values than PVC. The PVC/AgNP nanocomposites present virucidal activity against SARS-CoV-2 (B.1.1.28 strain) within 48 h when the AgNP content is at least 0.3 wt%, suitable for manufacturing furniture and hospital equipment with self-disinfectant capacity to avoid secondary routes of COVID-19 contagion.
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Affiliation(s)
- Daniel J. da Silva
- Center for Engineering, Modeling, and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Santo André, SP, Brazil
| | - Guilherme B. Gramcianinov
- Center for Engineering, Modeling, and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Santo André, SP, Brazil
| | - Pamela Z. Jorge
- Center for Engineering, Modeling, and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Santo André, SP, Brazil
| | - Vanessa B. Malaquias
- Department of Clinical and Toxicological Analysis, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Augusto A. Mori
- Department of Clinical and Toxicological Analysis, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Mário H. Hirata
- Department of Clinical and Toxicological Analysis, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Sergio A. M. Lopes
- BRGoods Indústria e Comércio de Produtos Hospitalares, Indaiatuba, SP, Brazil
| | - Luciano A. Bueno
- Center for Engineering, Modeling, and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Santo André, SP, Brazil
| | - Mathilde Champeau
- Center for Engineering, Modeling, and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Santo André, SP, Brazil
- *Correspondence: Mathilde Champeau, ; Danilo J. Carastan,
| | - Danilo J. Carastan
- Center for Engineering, Modeling, and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Santo André, SP, Brazil
- *Correspondence: Mathilde Champeau, ; Danilo J. Carastan,
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Dujarric K, Coutinho IT, Mantuaneli GT, Tassaing T, Champeau M. Solubility of aspirin, ketoprofen and R-(-)-carvone in supercritical CO2 in binary, ternary and quaternary systems: effect of co-solutes. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2022.105697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Milani GM, Coutinho IT, Ambrosio FN, Monteiro do Nascimento MH, Lombello CB, Venancio EC, Champeau M. Poly(acrylic acid)/polypyrrole interpenetrated network as electro‐responsive hydrogel for biomedical applications. J Appl Polym Sci 2022. [DOI: 10.1002/app.52091] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Giorgio Marques Milani
- Center of Engineering, Modelling and Applied Social Sciences Federal University of ABC Santo André Brazil
| | - Isabela Trindade Coutinho
- Center of Engineering, Modelling and Applied Social Sciences Federal University of ABC Santo André Brazil
| | - Felipe Nogueira Ambrosio
- Center of Engineering, Modelling and Applied Social Sciences Federal University of ABC Santo André Brazil
| | | | | | - Everaldo Carlos Venancio
- Center of Engineering, Modelling and Applied Social Sciences Federal University of ABC Santo André Brazil
| | - Mathilde Champeau
- Center of Engineering, Modelling and Applied Social Sciences Federal University of ABC Santo André Brazil
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Coutinho IT, Maia-Obi LP, Champeau M. Aspirin-Loaded Polymeric Films for Drug Delivery Systems: Comparison between Soaking and Supercritical CO 2 Impregnation. Pharmaceutics 2021; 13:824. [PMID: 34199551 PMCID: PMC8229088 DOI: 10.3390/pharmaceutics13060824] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/28/2021] [Accepted: 05/28/2021] [Indexed: 12/11/2022] Open
Abstract
Polymeric implants loaded with drugs can overcome the disadvantages of oral or injection drug administration and deliver the drug locally. Several methods can load drugs into polymers. Herein, soaking and supercritical CO2 (scCO2) impregnation methods were employed to load aspirin into poly(l-lactic acid) (PLLA) and linear low-density polyethylene (LLDPE). Higher drug loadings (DL) were achieved with scCO2 impregnation compared to soaking and in a shorter time (3.4 ± 0.8 vs. 1.3 ± 0.4% for PLLA; and 0.4 ± 0.5 vs. 0.6 ± 0.5% for LLDPE), due to the higher swelling capacity of CO2. The higher affinity of aspirin explained the higher DL in PLLA than in LLDPE. Residual solvent was detected in LLDPE prepared by soaking, but within the FDA concentration limits. The solvents used in both methods acted as plasticizers and increased PLLA crystallinity. PLLA impregnated with aspirin exhibited faster hydrolysis in vitro due to the catalytic effect of aspirin. Finally, PLLA impregnated by soaking showed a burst release because of aspirin crystals on the PLLA surface, and released 100% of aspirin within 60 days, whereas the PLLA prepared with scCO2 released 60% after 74 days by diffusion and PLLA erosion. Hence, the scCO2 impregnation method is adequate for higher aspirin loadings and prolonged drug release.
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Affiliation(s)
| | | | - Mathilde Champeau
- Center of Engineering, Modeling and Applied Social Sciences, Federal University of ABC, Santo Andre 09210-580, Brazil; (I.T.C.); (L.P.M.-O.)
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Lima DM, Chinellato AC, Champeau M. Boron nitride-based nanocomposite hydrogels: preparation, properties and applications. Soft Matter 2021; 17:4475-4488. [PMID: 33903866 DOI: 10.1039/d1sm00212k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Hexagonal boron nitride (h-BN) nanostructures are well-known for their good chemical stability, thermal conductivity and high elastic modulus. BN can be used as a filler in hydrogels to significantly improve their mechanical and thermal properties, to reinforce their biocompatibility and to provide self-healing capacity. Moreover, in contrast with their carbon equivalents, BN nanocomposites are transparent and electrically insulating. Herein, we present an overview of BN-based nanocomposite hydrogels. First, the properties of h-BN are described, as well as common exfoliation and functionalization techniques employed to obtain BN nanosheets. Then, methods for preparing BN-nanocomposite hydrogels are explained, followed by a specific overview of the relationship between the composition and structure of the nanocomposites and the functional properties. Finally, the main properties of these materials are discussed in view of the thermal, mechanical, and self-healing properties, along with the potential applications in tissue engineering, thermal management, drug delivery and water treatment.
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Affiliation(s)
- Diego Moreira Lima
- Center of Engineering, Modelling and Applied Social Sciences, Federal University of ABC, Santo André, SP 09210-580, Brazil.
| | - Anne Cristine Chinellato
- Center of Engineering, Modelling and Applied Social Sciences, Federal University of ABC, Santo André, SP 09210-580, Brazil.
| | - Mathilde Champeau
- Center of Engineering, Modelling and Applied Social Sciences, Federal University of ABC, Santo André, SP 09210-580, Brazil.
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Champeau M, Jary D, Vignion-Dewalle AS, Mordon S, de Lassalle EM, Vignoud S, Mortier L. Introduction of a model of skin lesions on rats and testing of dissolving microneedles containing 5-aminolevulinic acid. Int J Pharm 2020; 594:120115. [PMID: 33359668 DOI: 10.1016/j.ijpharm.2020.120115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 11/18/2020] [Accepted: 11/20/2020] [Indexed: 10/22/2022]
Abstract
Topical photodynamic therapy (PDT) is widely used to treat non melanoma skin cancers. It consists of topically applying on the skin lesions a cream containing a prodrug (5-aminolevulinic acid (5-ALA) or methyl aminolevulinate (MAL)) that is then metabolized to the photosensitizer protoporphyrin IX (PpIX). Light irradiation at PpIX excitation wavelength combined with oxygen then lead to a photochemical reaction inducing cell death. Nevertheless, this conventional PDT treatment is currently restricted to superficial skin lesions since the penetration depth of the prodrug is limited and hampers the production of PpIX in deep seated lesions. To overcome this problem, dissolving microneedles (MNs) included in a square flexible patch were developed. This easy-to-handle MN-patch is composed of 5-ALA mixed with hyaluronic acid (HA) and has the ability to dissolve after skin application. To evaluate the efficiency of this MN-patch in vivo, a skin lesion model has been developed on rats by applying UV-B illuminations. After 40 UV-B illuminations, histological and pharmacokinetic controls confirmed that the rats presented skin lesions. Once the rat skin lesion model has been validated, it was demonstrated that the MNs penetrated into the skin and fully dissolved in one hour on most of the rats. After one hour, the fluorescence images showed that the MN-patch produced a consequent and homogeneous level of PpIX. Overall, the dissolving MN-patch is a recent technology that has interesting features and several preclinical investigations should be led to compare its efficiency to that of the conventional treatment for PDT of non melanoma skin cancers.
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Affiliation(s)
- Mathilde Champeau
- CEA, LETI-DTBS, 17 rue des Martyrs, Grenoble Cedex, France; Univ. Lille, Inserm, CHU Lille, U1189 - ONCO-THAI - Assisted Laser Therapy and Immunotherapy for Oncology, F-59000 Lille, France.
| | - Dorothée Jary
- CEA, LETI-DTBS, 17 rue des Martyrs, Grenoble Cedex, France.
| | - Anne-Sophie Vignion-Dewalle
- Univ. Lille, Inserm, CHU Lille, U1189 - ONCO-THAI - Assisted Laser Therapy and Immunotherapy for Oncology, F-59000 Lille, France
| | - Serge Mordon
- Univ. Lille, Inserm, CHU Lille, U1189 - ONCO-THAI - Assisted Laser Therapy and Immunotherapy for Oncology, F-59000 Lille, France
| | - Elisabeth Martin de Lassalle
- Pathology Institute, Pole of Biology, Pathology and Genetics of the CHRU (University Hospital Research Center), 59000 Lille, France
| | | | - Laurent Mortier
- Univ. Lille, Inserm, CHU Lille, U1189 - ONCO-THAI - Assisted Laser Therapy and Immunotherapy for Oncology, F-59000 Lille, France
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Trindade Coutinho I, Champeau M. Synergistic effects in the simultaneous supercritical CO2 impregnation of two compounds into poly(L- lactic acid) and polyethylene. J Supercrit Fluids 2020. [DOI: 10.1016/j.supflu.2020.105019] [Citation(s) in RCA: 2] [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] [Indexed: 12/18/2022]
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8
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Champeau M, Jary D, Mortier L, Mordon S, Vignoud S. A facile fabrication of dissolving microneedles containing 5-aminolevulinic acid. Int J Pharm 2020; 586:119554. [DOI: 10.1016/j.ijpharm.2020.119554] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/12/2020] [Accepted: 06/13/2020] [Indexed: 01/30/2023]
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9
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Cabrini FM, Champeau M, Oliveira MG. Effect of Pluronic F127 on the 3D pore morphology of poly(
N
‐isopropylacrylamide‐
co
‐acrylic acid) hydrogels and their nitric oxide release from S‐nitrosoglutathione. J Appl Polym Sci 2020. [DOI: 10.1002/app.49056] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
| | - Mathilde Champeau
- Center for Engineering, Modeling and Applied Social SciencesFederal University of ABC Santo André São Paulo Brazil
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10
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Champeau M, Coutinho IT, Thomassin JM, Tassaing T, Jérôme C. Tuning the release profile of ketoprofen from poly(l-lactic acid) suture using supercritical CO2 impregnation process. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2019.101468] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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11
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Champeau M, Vignoud S, Mortier L, Mordon S. Photodynamic therapy for skin cancer: How to enhance drug penetration? J Photochem Photobiol B 2019; 197:111544. [PMID: 31295716 DOI: 10.1016/j.jphotobiol.2019.111544] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 06/14/2019] [Accepted: 06/25/2019] [Indexed: 12/27/2022]
Abstract
Photodynamic therapy (PDT) induced by protoporphyrin IX (PpIX) has been widely used in dermatological practices such as treatment of skin cancers. Clearance rate depends on different factors such as light irradiation, skin oxygenation and drug penetration. The poor penetration of 5-aminolevulinic acid (5-ALA) with topical application is limited and restrains the production of PpIX which could restrict PDT outcomes. This review will focus on techniques already used to enhance drug penetration in human skin, and will present their results, advantages, and drawbacks. Chemical and physical pretreatments will be discussed. Chemical pre-treatments comprise of drug formulation modification, use of agents that modify the heme cycle, enhance PpIX formation, and the combination of differentiation-promoting agent prior to PDT. On the other hand, physical pretreatments affect the skin barrier by creating holes in the skin or by removing stratum corneum. To promote drug penetration, iontophoresis and temperature modulation are interesting alternative methods. Cellular mechanisms enrolled during chemical or physical pretreatments have been investigated in order to understand how 5-ALA penetrates the skin, why it is preferentially metabolized in PpIX in tumour cells, and how it could be accumulated in deeper skin layers. The objective of this review is to compare clinical trials that use innovative technology to conventional PDT treatment. Most of these pretreatments present good or even better clinical outcomes than usual PDT.
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Affiliation(s)
- Mathilde Champeau
- LETI-DTBS, CEA, 17 rue des Martyrs, Grenoble Cedex, France; U1189 - ONCO-THAI - Image Assisted Laser Therapy for Oncology, CHU Lille, Univ. Lille, Inserm, F-59000 Lille, France.
| | | | - Laurent Mortier
- U1189 - ONCO-THAI - Image Assisted Laser Therapy for Oncology, CHU Lille, Univ. Lille, Inserm, F-59000 Lille, France
| | - Serge Mordon
- U1189 - ONCO-THAI - Image Assisted Laser Therapy for Oncology, CHU Lille, Univ. Lille, Inserm, F-59000 Lille, France
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12
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Champeau M, Póvoa V, Militão L, Cabrini FM, Picheth GF, Meneau F, Jara CP, de Araujo EP, de Oliveira MG. Supramolecular poly(acrylic acid)/F127 hydrogel with hydration-controlled nitric oxide release for enhancing wound healing. Acta Biomater 2018; 74:312-325. [PMID: 29777958 DOI: 10.1016/j.actbio.2018.05.025] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 05/07/2018] [Accepted: 05/15/2018] [Indexed: 01/20/2023]
Abstract
Topical nitric oxide (NO) delivery has been shown to accelerate wound healing. However, delivering NO to wounds at appropriate rates and doses requires new biomaterial-based strategies. Here, we describe the development of supramolecular interpolymer complex hydrogels comprising PEO-PPO-PEO (F127) micelles embedded in a poly(acrylic acid) (PAA) matrix, with S-nitrosoglutathione (GSNO) molecules dissolved in the hydrophilic domain. We show that PAA:F127/GSNO hydrogels start releasing NO upon hydration at rates controlled by their rates of water absorption. SAXS measurements indicate that the supramolecular structure of the hydrogels retains long-range order domains of F127 micelles. The PAA/F1227 hydrogels displayed dense morphologies and reduced rates of hydration. The NO release rates remain constant over the first 200 min, are directly correlated with the hydration rates of the PAA:F127/GSNO hydrogels, and can be modulated in the range of 40 nmol/g h to 1.5 μmol/g h by changing the PAA:F127 mass ratio. Long-term NO-release profiles over 5 days are governed by the first-order exponential decay of GSNO, with half-lives in the range of 0.5-3.4 days. A preliminary in vivo study on full-thickness excisional wounds in mice showed that topical NO release from the PAA:F127/GSNO hydrogels is triggered by exudate absorption and leads to increased angiogenesis and collagen fiber organization, as well as TGF-β, IGF-1, SDF-1, and IL-10 gene expressions in the cicatricial tissue. In summary, these results suggest that hydration-controlled NO release from topical PAA:F127/GSNO hydrogels is a potential strategy for enhancing wound healing. STATEMENT OF SIGNIFICANCE The topical delivery of nitric oxide (NO) to wounds may provide significant beneficial results and represent a promising strategy to treat chronic wounds. However, wound dressings capable of releasing NO after application and allowing the modulation of NO release rates, demand new platforms. Here, we describe a novel strategy to overcome these challenges, based on the use of supramolecular poly(acrylic acid) (PAA):F127 hydrogels charged with the NO donor S-nitrosoglutathione (GSNO) from whereby the NO release can be triggered by exudate absorption and delivered to the wound at rates controlled by the PAA:F127 mass ratio. Preliminary in vivo results offer a proof of concept for this strategy by demonstrating increased angiogenesis; collagen fibers organization; and TGF-β, IGF-1, SDF-1, and IL-10 gene expressions in the cicatricial tissue after topical treatment with a PAA:F127/GSNO hydrogel.
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Affiliation(s)
- Mathilde Champeau
- Department of Chemistry, Centre for Education and Research on Macromolecules (CERM), University of Liège, Liège, Belgium
- Department of Chemistry, Institut des Sciences Moléculaires, UMR 5255 CNRS, Université Bordeaux, Groupe Spectroscopie Moléculaire, Talence Cedex, France
| | - Jean-Michel Thomassin
- Department of Chemistry, Centre for Education and Research on Macromolecules (CERM), University of Liège, Liège, Belgium
| | - Thierry Tassaing
- Department of Chemistry, Institut des Sciences Moléculaires, UMR 5255 CNRS, Université Bordeaux, Groupe Spectroscopie Moléculaire, Talence Cedex, France
| | - Christine Jérôme
- Department of Chemistry, Centre for Education and Research on Macromolecules (CERM), University of Liège, Liège, Belgium
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Champeau M, Thomassin JM, Jérôme C, Tassaing T. In situ investigation of supercritical CO2 assisted impregnation of drugs into a polymer by high pressure FTIR micro-spectroscopy. Analyst 2015; 140:869-79. [DOI: 10.1039/c4an01130a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
High pressure FTIR micro-spectroscopy to follow the kinetics of the drug loading during the supercritical CO2 assisted impregnation process.
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Affiliation(s)
- M. Champeau
- Institut des Sciences Moléculaires
- UMR 5255 CNRS
- Université de Bordeaux
- 33405 TALENCE Cedex
- France
| | - J.-M. Thomassin
- Center for Education and Research on Macromolecules
- University of Liège
- Department of Chemistry
- 4000 Liège
- Belgium
| | - C. Jérôme
- Center for Education and Research on Macromolecules
- University of Liège
- Department of Chemistry
- 4000 Liège
- Belgium
| | - T. Tassaing
- Institut des Sciences Moléculaires
- UMR 5255 CNRS
- Université de Bordeaux
- 33405 TALENCE Cedex
- France
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15
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Champeau M, Thomassin JM, Jérôme C, Tassaing T. In situ FTIR micro-spectroscopy to investigate polymeric fibers under supercritical carbon dioxide: CO2 sorption and swelling measurements. J Supercrit Fluids 2014. [DOI: 10.1016/j.supflu.2014.03.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Champeau M. Emergency nurse protests Army accreditation requirement. J Emerg Nurs 1990; 16:238-40. [PMID: 2385051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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17
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Whitcher C, Ream AK, Parsons D, Rubsamen D, Scott J, Champeau M, Sterman W, Siegel L. Anesthetic mishaps and the cost of monitoring: a proposed standard for monitoring equipment. J Clin Monit Comput 1988; 4:5-15. [PMID: 3276819 DOI: 10.1007/bf01618101] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.2] [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: 01/05/2023]
Abstract
Review of insurance data indicates that approximately 1.5 claims are paid per 10,000 anesthetic procedures, a conservative estimate of the incidence of preventable serious injury associated with anesthesia. Insurance data permit estimation of the premium cost for the anesthesiologist and hospital, per operating room per year, of $69,429.00. We propose the use of an enhanced monitoring standard requiring a pulse oximeter, capnograph, spirometer, halometer, automatic sphygmomanometer, breathing circuit oxygen analyzer, stethoscope, electrocardiographic monitor, and temperature monitor. We suggest that this premium cost, together with the estimate that 50% of incidents would be avoided, predicts a resultant saving of over $27,000/operating room/year, a savings equal to the entire cost of the enhanced monitoring system in approximately 8 months, or a yearly savings of over five times the annualized expense of the monitoring system. Thus, in addition to the moral imperative to monitor a patient during anesthesia to avoid injury and death, there is an economic incentive to monitor effectively.
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Affiliation(s)
- C Whitcher
- Department of Anesthesia, Stanford University School of Medicine, CA 94305-5117
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18
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Champeau M, Arsac M, Pineau P. [Hydatid cyst of the convexity of the liver]. Sem Hop 1968; 44:1987-9. [PMID: 4299979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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19
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Champeau M, Arsac M, Pineau P. [2 duodenal diverticula and gastric cancer]. Sem Hop 1968; 44:1943-4. [PMID: 4299960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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20
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Champeau M, Arsac M. [Electronic surveillance of surgical cases]. Mem Acad Chir (Paris) 1968; 94:485-90. [PMID: 5697876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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21
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Champeau M, Arsac M, Pineau P, Bronchou P, Elbhard G, Apoil A. [Emergency treatment of hemorrhages from portal hypertension by temporary extracorporeal portacaval shunt]. Mem Acad Chir (Paris) 1967; 93:807-16. [PMID: 5301747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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22
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Parturier-Albot M, Hernandez C, Champeau M, Boccon-Gibod L, Albot G. [Selective arteriography in cancer of the rectum]. Sem Hop 1967; 43:1177-8. [PMID: 4294077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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23
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Champeau M. [Segmentectomy IV in the surgical exposure of the intrahepatic bile ducts]. Mem Acad Chir (Paris) 1967; 93:164-74. [PMID: 5600872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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24
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Champeau M, Bruchou P. [Postoperative acute non-lithiasic cholecystitis]. Rev Med Chir Mal Foie 1966; 41:167-80. [PMID: 5976757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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25
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Champeau M, Vialas M. [Mobilization of the 4th segment as an ideal approach to the biliary junction]. Ann Chir 1966; 20:966-970. [PMID: 5925426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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26
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Bloch-Laroque P, Champeau C, Faraggi M, Champeau M. [Catheterization of the external jugular vein through a needle for long term intravenous perfusions]. Presse Med (1893) 1966; 74:1819. [PMID: 5943745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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27
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Champeau M, Vialas M. [The mobilization of segment IV, ideal approach route of the biliary confluent and the principal intrahepatic pedicles]. Mem Acad Chir (Paris) 1966; 92:416-22. [PMID: 4957445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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28
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Champeau M, Meillere D. [Angiocholitis caused by reflux without apparent stasis]. Presse Med (1893) 1966; 74:217-22. [PMID: 5901888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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29
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Champeau M. [Apropos of sequelae of sphincterotomies. The problem of angiocholitis and reflux]. Actual Hepatogastroenterol (Paris) 1966; 2:533-8. [PMID: 5963845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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30
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Champeau M. [Apropos of the so-called afferent loop syndrome after gastrectomy]. Actual Hepatogastroenterol (Paris) 1965; 1:252-5. [PMID: 5875078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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