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Zheng Z, Couture D, Adams F, Roberson R, Ma R, Argenta L, Morykwas M. Attenuated Tissue Damage With Mechanical Tissue Resuscitation in a Pig Model of Spinal Cord Injury. J Neurotrauma 2024; 41:1020-1029. [PMID: 37830176 DOI: 10.1089/neu.2023.0172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023] Open
Abstract
Our previous studies on the treatment of spinal cord injuries with Mechanical Tissue Resuscitation (MTR) in rats have demonstrated that it can significantly improve the locomotor recovery and Basso Beattie Bresnahan scores. MTR treatment also reduced fluid accumulations by T2-imaging and improved the mean neural fiber number and fiber length in injured sites by fiber tractography. Myelin volume was also significantly preserved by MTR treatment. For further clinical application, a large animal model is necessary to assess this treatment. This study examined the effects of application of MTR on traumatic spinal cord injury in a swine model. Traumatic spinal cord contusion injuries in swine were created by controlled pneumatic impact device. Negative pressure at -75 mm Hg was continuously applied to the injured site through open cell silicone manifold for 7 days. In vivo magnetic resonance imaging for T2 and gradient echo (GRE) analysis employed a 3T machine, while a 7T machine was employed for diffusion tensor imaging (DTI) and fiber tractography. Histological hematoxylin and eosin (H&E) and Luxol fast blue staining were examined. MTR significantly reduced the mean injured volumes over 46% by T2-imaging in the injured sites from 477.34 ± 146.31 mm3 in non-treated group to 255.99 ± 70.28 mm3 in MTR treated group (p < 0.01). It also reduced fluid accumulations by relative T2 signal density in the epicenter of the spinal cord injury from 1.62 ± 0.27 in non-treated group to 1.22 ± 0.10 in the MTR treated group (p < 0.05). The mean injured tissue volume measured by H&E staining was 303.71 ± 78.21 mm3 in the non-treated group and decreased significantly to 162.16 ± 33.0 mm3 in the MTR treated group (p < 0.01). The myelin fiber bundles stained by Luxol blue were preserved much more in the MTR treated group (90 ± 29.71 mm3) than in the non-treated group (33.68 ± 24.99 mm3, p < 0.01). The fractional anisotropy (FA) values processed by DTI analysis are increased from 0.203 ± 0.027 in the untreated group to 0.238 ± 0.029 in MTR treatment group (p < 0.05). Fiber tractography showings the mean fiber numbers across the impacted area were increased over 112% from 327.0 ± 99.74 in the non-treated group to 694.83 ± 297.86 in the MTR treated group (p < 0.05). These results indicate local application of MTR for 7 days to spinal cord injury in a swine model decreased tissue injury, reduced tissue edema, and preserved more myelin fibers as well as nerve fibers in the injured spinal cord.
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Affiliation(s)
- Zhenlin Zheng
- Department of Plastic and Reconstructive Surgery, Wake Forest University Health Science, Winston-Salem, North Carolina, USA
| | - Daniel Couture
- Department of Neurosurgery, Wake Forest University Health Science, Winston-Salem, North Carolina, USA
| | - Farren Adams
- Department of Plastic and Reconstructive Surgery, Wake Forest University Health Science, Winston-Salem, North Carolina, USA
| | - Rebecca Roberson
- Department of Plastic and Reconstructive Surgery, Wake Forest University Health Science, Winston-Salem, North Carolina, USA
| | - Rong Ma
- Department of Plastic and Reconstructive Surgery, Wake Forest University Health Science, Winston-Salem, North Carolina, USA
| | - Louis Argenta
- Department of Plastic and Reconstructive Surgery, Wake Forest University Health Science, Winston-Salem, North Carolina, USA
| | - Michael Morykwas
- Department of Plastic and Reconstructive Surgery, Wake Forest University Health Science, Winston-Salem, North Carolina, USA
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The Promising Effects of Transplanted Umbilical Cord Mesenchymal Stem Cells on the Treatment in Traumatic Brain Injury. J Craniofac Surg 2018; 29:1689-1692. [PMID: 30234712 PMCID: PMC6200375 DOI: 10.1097/scs.0000000000005042] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Many studies have reported the recovery ability of umbilical cord-derived mesenchymal stem cells (UC-MSCs) for neural diseases. In this study, the authors explored the roles of UC-MSCs to treat the traumatic brain injury. Umbilical cord-derived mesenchymal stem cells were isolated from healthy neonatal rat umbilical cord immediately after delivery. The traumatic brain injury (TBI) model was formed by the classical gravity method. The authors detected the behavior changes and measured the levels of inflammatory factors, such as interleukin-lβ and tumor necrosis factor-α by enzyme linked immunosorbent assay (ELISA) at 1, 2, 3, 4 weeks after transplantation between TBI treated and untreated with UC-MSCs. Simultaneously, the expression of glial cell line-derived neurotrophic factor (GDNF) and brain derived neurotrophic factor (BDNF) were measured by real-time-polymerase chain reaction and ELISA.The authors found that the group of transplantation UC-MSCs has a significant improvement than other group treated by phosphate buffered saline. In the behavioral test, the Neurological Severity Scores of UC-MSCs + TBI group were lower than TBI group (P < 0.05), but not obviously higher than control group at 2, 3, and 4week, respectively. The inflammatory factors are significantly reduced comparison with TBI group (P < 0.05), but both GDNF and BDNF were higher than TBI group (P < 0.05). The results indicated that UC-MSCs might play an important role in TBI recovery through inhibiting the release of inflammatory factors and increasing the expression of GDNF and BDNF.
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Shin SH, Park IK, Kang JW, Lee YS, Chung YG. Vacuum-Assisted Closure (VAC) Using Multiple Foam Pieces for Hidden Space Drainage through Less Exposure in Musculoskeletal Infections. J Hand Surg Asian Pac Vol 2018; 23:369-376. [DOI: 10.1142/s242483551850039x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Background: Purulent musculoskeletal infections often require surgical debridement and drainage. However, when the infection is extensive or involving multiple layers of tissues, maintaining drainage of the involved spaces can be difficult, even with the application of vacuum-assisted closure (VAC) therapy. Wide exposure and aggressive debridement is often required for such cases, which in turn may complicate wound coverage.Methods: A retrospective review was performed for 16 patients with musculoskeletal infections treated surgically. The diagnosis for the patients consisted of necrotizing fasciitis, large soft tissue abscess, peri-hardware abscess, infected compartment syndrome, emphysematous osteomyelitis, and gas gangrene of diabetic foot. We minimized the incision and resection for debridement and drainage, and instead we placed multiple foam pieces between the tissues involved with VAC, to maintain drainage of the hidden spaces with negative pressure.Results: Infection was successfully controlled in all cases. The mean duration of VAC treatment was 16.1 days (range, 5–36) and the mean number of VAC changes was 5.1 (range, 1–13). Primary wound closure was achieved in 11 cases, while skin grafts were used to cover the remaining five cases, which consisted of necrotizing fasciitis, infected compartment syndrome, and diabetic foot gas gangrene. No complications specifically associated with VAC therapy were observed.Conclusions: VAC using multiple foam pieces for hidden space drainage appears to be effective for infection control. It is helpful for minimizing exposure and resection for drainage and debridement, although subsequent reduction of the necessity or the level of wound coverage should further be investigated.
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Affiliation(s)
- Seung-Han Shin
- Department of Orthopedic Surgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Il-Kyu Park
- Department of Orthopedic Surgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jin-Woo Kang
- Department of Orthopedic Surgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yong-Suk Lee
- Department of Orthopedic Surgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yang-Guk Chung
- Department of Orthopedic Surgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Zheng ZL, Morykwas MJ, Tatter S, Gordon S, McGee M, Green H, Argenta LC. Ameliorating Spinal Cord Injury in an Animal Model With Mechanical Tissue Resuscitation. Neurosurgery 2017; 78:868-76. [PMID: 26479704 DOI: 10.1227/neu.0000000000001063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Traumatic spinal cord injury (SCI) is a major worldwide cause of mortality and disability with limited treatment options. Previous research applying controlled negative pressure to traumatic brain injury in rat and swine models resulted in smaller injuries and more rapid recovery. OBJECTIVE To examine the effects of the application of a controlled vacuum (mechanical tissue resuscitation [MTR]) to SCI in a rat model under several magnitudes of vacuum. METHODS Controlled contusion SCIs were created in rats. Vacuums of -50 and -75 mm Hg were compared. Analysis included open-field locomotor performance, magnetic resonance imaging (in vivo T2, ex vivo diffusion tensor imaging and fiber tractography), and histological assessments. RESULTS MTR treatment significantly improved the locomotor recovery from a Basso, Beattie, and Bresnahan score of 7.8 ± 1.9 to 11.4 ± 1.2 and 10.7 ± 1.9 at -50- and -75-mm Hg pressures, respectively, 4 weeks after injury. Both pressures also reduced fluid accumulations > 10% by T2-imaging in SCI sites. The mean fiber number and mean fiber length were greater across injured sites after MTR treatment, especially with treatment with -50 mm Hg. Myelin volume was increased significantly by 60% in the group treated with -50 mm Hg. CONCLUSION MTR of SCI in a rat model is effective in reducing edema in the injured cord, preserving myelin survival, and improving the rate and quantity of functional recovery. ABBREVIATIONS BBB, Basso, Beattie, and BresnahanDTI, diffusion tensor imagingFA, fractional anisotropyMTR, mechanical tissue resuscitationMTR50, mechanical tissue resuscitation with 50-mm Hg subatmospheric pressureMTR75, mechanical tissue resuscitation with 75-mm Hg subatmospheric pressureROI, region of interestSCI, spinal cord injury.
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Affiliation(s)
- Zhen-Lin Zheng
- Departments of *Plastic and Reconstructive Surgery, and ‡Neurosurgery, Wake Forest University Health Sciences, Winston-Salem, North Carolina; §Department of Physiology & Pharmacology, Wake Forest University School of Medicine, Winston-Salem, North Carolina
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Warner HJ, Wagner WD. Fabrication of biodegradable foams for deep tissue negative pressure treatments. J Biomed Mater Res B Appl Biomater 2017; 106:1998-2007. [PMID: 29031009 DOI: 10.1002/jbm.b.34007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 08/02/2017] [Accepted: 08/16/2017] [Indexed: 11/06/2022]
Abstract
Devices for negative pressure wound therapy (NPWT) rely on compressible foams operating at the tissue-device interface. Clinically used foams are nonabsorbable and if used on deep wounds or left in place for an extended period of time, excessive cell ingrowth and formation of granulation tissue into the foam may require a surgical procedure to remove the foam. Foams with fast degradation and with low immunogenicity and fibrotic response are required. Foams composed of combinations of poly(lactide-co-glycolide) (PLGA), poly(lactide-co-caprolactone) (PLCL), and polycaprolactone (PCL) were created by combined salt leaching and solvent displacement protocols. In vitro and in vivo degradation studies and mechanical properties of foams were evaluated and compared to clinically used poly(vinyl alcohol) (PVA) foam and PCL foams. Foams composed of PLGA (50:50 lactide:glycolide) of low molecular weight blended with PCL maintained mechanical properties and degraded significantly after 21 days of subcutaneous implantation in rats. The most ideal formulations for use in NPWT were identified as copolymeric PLGA (Mn 3000 Da) at a lactide:glycolide ratio of 50:50 combined with PCL at either a 75:25 or 50:50 ratio, and copolymeric PLGA (Mn 7500 Da) at a lactide:glycolide ratio of 50:50 combined with PCL at a 50:50 ratio. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1998-2007, 2018.
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Affiliation(s)
- Harleigh J Warner
- Department of Plastic and Reconstructive Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina.,Department of Biomedical Engineering, School of Biomedical Engineering and Sciences, Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | - William D Wagner
- Department of Plastic and Reconstructive Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina.,Department of Biomedical Engineering, School of Biomedical Engineering and Sciences, Wake Forest University School of Medicine, Winston-Salem, North Carolina
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Abstract
By hastening the resolution of edema and improving local microcirculation, topical negative pressure wound therapy (TNP) aids the establishment of early wound coverage. Its use in the setting of type III open fractures is reviewed. The author's initial use of TNP for closed surgical incisions and how it morphed its way into being applied to closed surgical wounds with heightened likelihood for infection is presented. Several case studies are presented to illustrate the role and the technique for management of acute or subacute infections involving bone and implant.
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Affiliation(s)
- Lawrence X Webb
- Department of Orthopaedic Trauma, Medical Center Navicent Health, 840 Pine Street, Macon, GA 31201, USA; Department of Surgery, Mercer University School of Medicine, 1400 Coleman Avenue, Macon, GA 31217, USA; Department of Orthopaedic Surgery, Medical Center, Wake Forest University, Medical Center Boulevard, Winston-Salem, NC 27157, USA.
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Jordan JE, Pereira BD, Lane MR, Morykwas MJ, McGee M, Argenta LC. Mechanical tissue resuscitation (MTR): a nonpharmacological approach to treatment of acute myocardial infarction. J Card Surg 2015; 30:659-67. [PMID: 26040506 DOI: 10.1111/jocs.12580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND AIM Myocardial ischemia-reperfusion injury is known to trigger an inflammatory response involving edema, apoptosis, and neutrophil activation/accumulation. Recently, mechanical tissue resuscitation (MTR) was described as a potent cardioprotective strategy for reduction of myocardial ischemia-reperfusion injury. Here, we further describe the protective actions of MTR and begin to define its therapeutic window. METHODS A left ventricular, free-wall ischemic area was created in anesthetized swine for 85 minutes and then reperfused for three hours. Animals were randomized to two groups: (1) untreated controls (Control) and (2) application of MTR that was delayed 90 minutes after the initiation of reperfusion (D90). Hemodynamics and regional myocardial blood flow were assessed at multiple time points. Infarct size and neutrophil accumulation were assessed following the reperfusion period. In separate cohorts, the effect of MTR on myocardial interstitial water (MRI imaging) and blood flow was examined. RESULTS Both groups had similar areas at risk (AAR), hemodynamics, and arterial blood gas values. MTR, even when delayed 90 minutes into reperfusion (D90, 29.2 ± 5.0% of AAR), reduced infarct size significantly compared to Controls (51.9 ± 2.7%, p = 0.006). This protection was associated with a 33% decrease in neutrophil accumulation (p = 0.047). Improvements in blood flow and interstitial water were also observed. Moreover, we demonstrated that the therapeutic window for MTR lasts for at least 90 minutes following reperfusion. CONCLUSIONS This study confirms our previous observations that MTR is an effective therapeutic approach to reducing reperfusion injury with a clinically useful treatment window.
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Affiliation(s)
- James E Jordan
- Department of Cardiothoracic Surgery, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Beatriz D Pereira
- Department of Cardiothoracic Surgery, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Magan R Lane
- Department of Cardiothoracic Surgery, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Michael J Morykwas
- Department of Plastic & Reconstructive Surgery, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Maria McGee
- Department of Plastic & Reconstructive Surgery, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Louis C Argenta
- Department of Plastic & Reconstructive Surgery, Wake Forest School of Medicine, Winston-Salem, North Carolina
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Schlatterer DR, Hirschfeld AG, Webb LX. Negative pressure wound therapy in grade IIIB tibial fractures: fewer infections and fewer flap procedures? Clin Orthop Relat Res 2015; 473:1802-11. [PMID: 25595096 PMCID: PMC4385370 DOI: 10.1007/s11999-015-4140-1] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Accepted: 01/06/2015] [Indexed: 01/31/2023]
Abstract
BACKGROUND Grade IIIB open tibia fractures are devastating injuries. Some clinicians advocate wound closure or stable muscle flap coverage within 72 hours to limit complications such as infection. Negative pressure wound therapy was approved by the FDA in 1997 and has become an adjunct for many surgeons in treating these fractures. Opinions vary regarding the extent to which negative pressure wound therapy contributes to limb salvage. Evidence-based practice guidelines are limited for use of negative pressure wound therapy in Grade IIIB tibia fractures. This systematic literature review of negative pressure wound therapy in Grade IIIB tibia fractures may substantiate current use and guide future studies. QUESTIONS/PURPOSES We sought to answer the following: (1) Does the use of negative pressure would therapy compared with gauze dressings lead to fewer infections? (2) Does it allow flap procedures to be performed safely beyond 72 hours without increased infection rates? (3) Is it associated with fewer local or free flap procedures? METHODS We conducted a systematic review of six large databases (through September 1, 2013) for studies reporting use of negative pressure wound therapy in Grade IIIB open tibia fractures, including information regarding infection rates and soft tissue reconstruction. The systematic review identified one randomized controlled trial and 12 retrospective studies: four studies compared infection rates between negative pressure wound therapy and gauze dressings, 10 addressed infection rates with extended use, and six reported on flap coverage rates in relation to negative pressure wound therapy use beyond 72 hours. None of the 13 studies was eliminated owing to lack of study quality. RESULTS Negative pressure wound therapy showed a decrease in infection rates over rates for gauze dressings in two of four studies (5.4% [two of 35] versus 28% [seven of 25], and 8.4% [14 of 166] versus 20.6% [13 of 63]), an equivalent infection rate in one study (15% [eight of 53] versus 14% [five of 16]), and an increased infection rate in the fourth study (29.5% [23 of 78] versus 8% [two of 25]). In terms of the second question regarding infection rates with negative pressure wound therapy beyond 72 hours, eight of 10 studies concluded there was no increase in infection rates, whereas two of 10 reported an increase in infection rates associated with negative pressure wound therapy use beyond 72 hours. Infection rates varied from 0% to 57% in these 10 studies. Five studies reported low infection rates of 0% to 7% and five reported rates of 27% to 57%. The third question (addressed by six studies) regarded the potential decreased use of a soft tissue flap in patients treated with extended negative pressure wound therapy. Flap rates were reduced by 13% to 60% respectively compared with those of historical controls. Grade IIIB tibia fractures by definition required soft tissue procedures. The patients in these six studies had Grade IIIB tibia fractures after the first débridement. However, after extended negative pressure wound therapy, fewer patients required flaps than grading at the first débridement would have predicted. CONCLUSIONS There is an increasing body of data supporting negative pressure wound therapy as an adjunctive modality at all stages of treatment for Grade IIIB tibia fractures. There is an association between decreased infection rates with negative pressure wound therapy compared with gauze dressings. There is evidence to support negative pressure wound therapy beyond 72 hours without increased infection rates and to support a reduction in flap rates with negative pressure wound therapy. However, negative pressure wound therapy use for Grade IIIB tibia fractures requires extensive additional study. LEVEL OF EVIDENCE Level III, therapeutic study.
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Affiliation(s)
- Daniel R. Schlatterer
- Orthopaedic Trauma, Atlanta Medical Center, 303 Parkway Drive NE, Atlanta, GA 30312 USA
| | - Adam G. Hirschfeld
- Orthopaedic Surgery, Atlanta Medical Center, 303 Parkway Drive NE, Atlanta, GA 30312 USA
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Zheng ZL, Morykwas M, Campbell D, McGee M, Hollingsworth C, Adams F, Mays J, Tatter S, Argenta L. Mechanical tissue resuscitation at the site of traumatic brain injuries reduces the volume of injury and hemorrhage in a swine model. Neurosurgery 2014; 75:152-62; discussion 161-2. [PMID: 24618796 DOI: 10.1227/neu.0000000000000341] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Traumatic brain injuries (TBIs) continue to be a devastating problem with limited treatment options. Previous research applying controlled vacuum to TBI in a rat model resulted in smaller injuries and more rapid recovery. OBJECTIVE To examine the effects of the application of a controlled vacuum (mechanical tissue resuscitation) to TBI in a large-animal model. The magnitude of vacuum, length of application, and length of delay between injury and the application of mechanical tissue resuscitation were investigated. METHODS Localized, controlled cortical injuries were created in swine. Vacuums of -50 and -100 mm Hg were compared. Mechanical tissue resuscitation for 3 or 5 days was compared. Delays of 0, 3, or 6 hours between the creation of the TBI and the initiation of mechanical tissue resuscitation were examined. Analysis included histological assessments, computed tomographic perfusion, and magnetic resonance imaging (T2, proton magnetic spectra). RESULTS A -100 mm Hg vacuum resulted in significantly smaller mean contused brain and hemorrhage volumes compared with -50 mm Hg and controls. Magnetic resonance spectra of treated animals returned to near baseline values. All 10 animals with 5-day mechanical tissue resuscitation treatment survived. Three of 6 animals treated for 3 days died after the discontinuation of treatment. A 3-hour delay resulted in similar results as immediate treatment. A 6-hour delay produced significant, but lesser responses. CONCLUSION Application of mechanical tissue resuscitation to TBI was efficacious in the large-animal model. Application of -100 mm Hg for 5 days resulted in significantly improved outcomes. Delays of up to 3 hours between injury and the initiation of treatment did not diminish the efficacy of the mechanical tissue resuscitation treatment.
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Affiliation(s)
- Zhen-lin Zheng
- *Department of Plastic and Reconstructive Surgery, Wake Forest University Health Sciences, Winston-Salem, North Carolina; ‡Department of General Surgery, Wake Forest University Health Sciences, Winston-Salem, North Carolina; §Department of Neurosurgery, Wake Forest University Health Sciences, Winston-Salem, North Carolina
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Jordan JE, Mays JJ, Shelton JE, Bryant AK, Lane MR, Morykwas MJ, Argenta LC. Mechanical Tissue Resuscitation Protects Against Myocardial Ischemia-Reperfusion Injury. J Card Surg 2013; 29:116-23. [DOI: 10.1111/jocs.12247] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- James E. Jordan
- Department of Cardiothoracic Surgery; Wake Forest School of Medicine; Winston-Salem North Carolina
| | - Jennifer J. Mays
- Department of Plastic and Reconstructive Surgery; Wake Forest School of Medicine; Winston-Salem North Carolina
| | - Julie E. Shelton
- Department of Plastic and Reconstructive Surgery; Wake Forest School of Medicine; Winston-Salem North Carolina
| | - Allyson K. Bryant
- Department of Plastic and Reconstructive Surgery; Wake Forest School of Medicine; Winston-Salem North Carolina
| | - Magan R. Lane
- Department of Cardiothoracic Surgery; Wake Forest School of Medicine; Winston-Salem North Carolina
| | - Michael J. Morykwas
- Department of Plastic and Reconstructive Surgery; Wake Forest School of Medicine; Winston-Salem North Carolina
| | - Louis C. Argenta
- Department of Plastic and Reconstructive Surgery; Wake Forest School of Medicine; Winston-Salem North Carolina
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