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Prabhakar P, Mariappan R, Moorthy RK, Nair BR, Karuppusami R, Lionel KR. Adding Ketamine to Epidural Morphine Does Not Prolong Postoperative Analgesia After Lumbar Laminectomy or Discectomy. J Neurosurg Anesthesiol 2024; 36:244-251. [PMID: 37000813 DOI: 10.1097/ana.0000000000000914] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 02/23/2023] [Indexed: 04/01/2023]
Abstract
BACKGROUND Epidural opioids provide effective postoperative analgesia after lumbar spine surgery. Ketamine has been shown to reduce opioid-induced central sensitization and hyperalgesia. We hypothesized that adding ketamine to epidural opioids would prolong the duration of analgesia and enhance analgesic efficacy after lumbar spine surgery. METHODS American Society of Anesthesiologists physical status class I to II patients aged between 18 and 70 years with normal renal function undergoing lumbar laminectomy were recruited into this single-center randomized trial. Patients were randomized to receive either single-dose epidural morphine (group A) or epidural morphine and ketamine (group B) for postoperative analgesia. The primary objective was to compare the duration of analgesia as measured by time to the first postoperative analgesic request. Secondary objectives were the comparison of pain scores at rest and movement, systemic hemodynamics, and the incidence of side effects during the first 24 hours after surgery. RESULTS Fifty patients were recruited (25 in each group), of which data from 48 were available for analysis. The mean±SD duration of analgesia was 20±6 and 23±3 hours in group A and group B, respectively ( P =0.07). There were 12/24 (50%) patients in group A and 17/24 (71%) patients in group B who did not receive rescue analgesia during the first 24-hour postoperative period ( P =0.07). Pain scores at rest and movement, systemic hemodynamics, and postoperative complications were comparable between the groups. CONCLUSIONS The addition of ketamine to epidural morphine did not prolong the duration of analgesia after lumbar laminectomy.
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Affiliation(s)
| | | | | | | | - Reka Karuppusami
- Biostatistics, Christian Medical College, Vellore, Tamil Nadu, India
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Sanusi TD, Momin S, Sachdev B, Leung A. Super-elderly, spinal surgery, evaluating the risks and benefits: a retrospective single-centre cohort study. Acta Neurochir (Wien) 2024; 166:248. [PMID: 38833175 DOI: 10.1007/s00701-024-06135-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 05/22/2024] [Indexed: 06/06/2024]
Abstract
INTRODUCTION An increasingly ageing population presents emerging healthcare challenges. Adequate clinical evaluation and understanding of outcome-predicting factors are integral to delivering safe spinal surgery to super-elderly patients. AIM To evaluate spine surgery outcomes in patients aged 80 or above. METHODS We retrospectively evaluated patients 80 years and above who underwent elective or emergency spinal surgery between 2017 and 2022. The Eurospine Surgery Classification (ESC) was used to classify operations into Large, Medium, and Small. We calculated and compared Clinical Frailty Scores (CFS) pre- and post-operatively. RESULTS Two hundred forty-five patients met the inclusion criteria. Most were male (n = 145). The age range was 80 to 99 (mean 83.3). Most operations were elective (n = 151, 62%). In our cohort, 211, 22, 10,2 and 1 patients had degenerative, trauma, tumour, infective and vascular pathologies, respectively. According to the Eurospine classification, 201 (82.0%) had Minor spine surgery (63 emergently and 138 electively), 38 had Medium surgery (15.5% - 30 emergently and 8 electively), and 6 had Large surgery (2.4% - 1 emergently and 5 electively). 163 (66.5%) were discharged or under follow-up. There were 11 in-patient mortalities (4.5%). Outpatient mortality was 51 (20.8%), with the median time from surgery to death being 504.5 days, all the outpatient mortalities were neither non-spinal pathology nor spinal surgical related. CFS improved across the cohort, from 5 pre-operatively to 4 post-operatively (p < 0.001). CONCLUSION Spine surgery in those over the 80s can be performed safely and improve their quality of life, as demonstrated by improvements in the CFS. Good patient selection and adequate pre-operative workup is essential, although it may not be possible in emergencies.
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Affiliation(s)
| | - Sheikh Momin
- Department of Neurosurgery, Queen Elizabeth Hospital, Birmingham, UK
- Institute of Inflammation & Ageing, University of Birmingham, Birmingham, UK
| | - Bobby Sachdev
- Department of Neurosurgery, Queen Elizabeth Hospital, Birmingham, UK
| | - Andraay Leung
- Department of Neurosurgery, Queen Elizabeth Hospital, Birmingham, UK
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Patel J, Dincer A, Wiepert L, Karimi H, Wang A, Kanter M, Olmos M, Yang M, Kosarchuk JJ, Kryzanski J, Riesenburger RI. Erector Spinae Plane Block Placement Utilizing Fluoroscopic Guidance Improves Efficiency in Lumbar Surgery. World Neurosurg 2024; 185:e886-e892. [PMID: 38453008 DOI: 10.1016/j.wneu.2024.02.147] [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] [Received: 01/07/2024] [Revised: 02/26/2024] [Accepted: 02/27/2024] [Indexed: 03/09/2024]
Abstract
OBJECTIVE The erector spinae plane block (ESPB) is a novel regional analgesic technique which improves postoperative outcomes in lumbar surgery patients including length of hospitalization, days to ambulation, and postoperative opioid use. Traditionally, the block is administered by anesthesiologists trained in the ultrasound guidance technique. The use of fluoroscopic guidance may improve the efficiency and accessibility of the ESPB for spine surgeons. We aim to measure the time to administer an ESPB using fluoroscopic guidance and localize the anesthetic using intraoperative three-dimensional (3D) imaging. METHODS Two neurosurgeons administered an ESPB to patients undergoing lumbar surgery. Time from insertion of the spinal needle to localize the erector spinae plane using C-arm guidance to time of complete injection and removal of the needle from the skin was recorded. One patient underwent O-arm imaging following injection of an Isovue-Exparel solution at the L3 level to visualize spread of the anesthetic. RESULTS A total of 21 patients were enrolled in this study. The average duration to perform an ESPB under fluoroscopic guidance was 1.2 minutes. The Isovue-Exparel solution was injected at the L3 level and was well distributed along the ESP on intraoperative O-arm imaging. The anesthetic dissected the erector spinae muscle from the transverse process at L2, L3, and L4. CONCLUSIONS Fluoroscopic guidance allows efficient and appropriate delivery of the anesthetic to the erector spinae plane. Performing an ESPB with fluoroscopic guidance improves efficiency and accessibility of the analgesic technique for spine surgeons, reducing dependence on anesthesiology personnel trained in administering the block.
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Affiliation(s)
- Jainith Patel
- Department of Neurosurgery, Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts
| | - Alper Dincer
- Department of Neurosurgery, Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts
| | - Liana Wiepert
- Department of Neurosurgery, Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts
| | - Helen Karimi
- Department of Neurosurgery, Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts
| | - Andy Wang
- Department of Neurology, University of California San Francisco, San Francisco, California
| | - Matthew Kanter
- Department of Neurosurgery, Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts
| | - Michelle Olmos
- Department of Neurosurgery, Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts
| | - Michael Yang
- Department of Neurosurgery, Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts
| | - Jacob J Kosarchuk
- Department of Neurosurgery, Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts
| | - James Kryzanski
- Department of Neurosurgery, Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts
| | - Ron I Riesenburger
- Department of Neurosurgery, Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts.
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Novac MB, Boldeanu L, Dijmărescu AL, Boldeanu MV, Neamțu SD, Radu L, Manolea MM, Șerbănescu MS, Stoica M, Rotaru LT, Văduva CC. Immune Responses of Healthy Pregnant Women following an Elective Cesarean Section: Effects of Anesthetic Procedures. Diagnostics (Basel) 2024; 14:880. [PMID: 38732295 PMCID: PMC11083323 DOI: 10.3390/diagnostics14090880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024] Open
Abstract
A weakened immune system and more inflammatory cytokines being released are possible effects of the surgical stress that a cesarean section induces. This kind of reaction, in addition to the altered reaction to catecholamines, has the potential to significantly affect the immune system of the mother and the patients' general postoperative course. This prospective study compared the plasma levels of catecholamines and cytokines in healthy pregnant patients having cesarean sections under spinal anesthesia versus general anesthesia. A total of 30 pregnant women undergoing elective cesarean sections were divided into two groups: 15 who received general anesthesia (GA) and 15 who received spinal anesthesia (SA). Blood samples were collected from all subjects before anesthesia induction (pre-OP), 6 h postoperatively (6 h post-OP), and 12 h (12 h post-OP), to measure levels of tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), IL-8, IL-4, IL-10, norepinephrine (NE), and epinephrine (EPI). When we compared the two groups, we discovered that only IL-6 and IL-4 had significantly higher levels pre-OP, whereas all studied cytokines exhibited an increase in the GA versus SA group at 6 and 12 h post-OP. In the case of catecholamines, we discovered that serum levels are positively related with pro-inflammatory or anti-inflammatory cytokines, depending on the time of day and type of anesthetic drugs. Compared to SA, GA has a more consistent effect on the inflammatory response and catecholamine levels. The findings of this study confirm that the type of anesthesia can alter postoperative immunomodulation to various degrees via changes in cytokine and catecholamine production. SA could be a preferable choice for cesarean section because it is an anesthetic method that reduces perioperative stress and allows for less opioid administration, impacting cytokine production with proper immunomodulation.
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Affiliation(s)
- Marius Bogdan Novac
- Department of Anesthesiology and Intensive Care, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (M.B.N.); (M.S.)
| | - Lidia Boldeanu
- Department of Microbiology, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Anda Lorena Dijmărescu
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (A.L.D.); (M.M.M.); (C.-C.V.)
| | - Mihail Virgil Boldeanu
- Department of Immunology, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Simona Daniela Neamțu
- Department of Hematology and Immunology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Lucreţiu Radu
- Department of Hygiene, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Maria Magdalena Manolea
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (A.L.D.); (M.M.M.); (C.-C.V.)
| | - Mircea-Sebastian Șerbănescu
- Department of Medical Informatics and Biostatistics, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Maria Stoica
- Department of Anesthesiology and Intensive Care, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (M.B.N.); (M.S.)
| | - Luciana Teodora Rotaru
- Department of Emergency Medicine and First Aid, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Constantin-Cristian Văduva
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania; (A.L.D.); (M.M.M.); (C.-C.V.)
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Huang CC, Fitts J, Huie D, Bhowmick DA, Abd-El-Barr MM. Evolution of Cervical Endoscopic Spine Surgery: Current Progress and Future Directions-A Narrative Review. J Clin Med 2024; 13:2122. [PMID: 38610887 PMCID: PMC11012719 DOI: 10.3390/jcm13072122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 03/28/2024] [Accepted: 04/02/2024] [Indexed: 04/14/2024] Open
Abstract
Cervical endoscopic spine surgery is rapidly evolving and gaining popularity for the treatment of cervical radiculopathy and myelopathy. This approach significantly reduces muscular damage and blood loss by minimizing soft tissue stripping, leading to less postoperative pain and a faster postoperative recovery. As scientific evidence accumulates, the efficacy and safety of cervical endoscopic spine surgery are continually affirmed. Both anterior and posterior endoscopic approaches have surfaced as viable alternative treatments for various cervical spine pathologies. Newer techniques, such as endoscopic-assisted fusion, the anterior transcorporeal approach, and unilateral laminotomy for bilateral decompression, have been developed to enhance clinical outcomes and broaden surgical indications. Despite its advantages, this approach faces challenges, including a steep learning curve, increased radiation exposure for both surgeons and patients, and a relative limitation in addressing multi-level pathologies. However, the future of cervical endoscopic spine surgery is promising, with potential enhancements in clinical outcomes and safety on the horizon. This progress is fueled by integrating advanced imaging and navigation technologies, applying regional anesthesia for improved and facilitated postoperative recovery, and incorporating cutting-edge technologies, such as augmented reality. With these advancements, cervical endoscopic spine surgery is poised to broaden its scope in treating cervical spine pathologies while maintaining the benefits of minimized tissue damage and rapid recovery.
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Affiliation(s)
- Chuan-Ching Huang
- Division of Spine, Department of Neurosurgery, Duke University Hospital, Durham, NC 27710, USA
- Department of Orthopedic Surgery, National Taiwan University Hospital, Taipei 100, Taiwan
| | - Jamal Fitts
- Division of Spine, Department of Neurosurgery, Duke University Hospital, Durham, NC 27710, USA
| | - David Huie
- Division of Spine, Department of Neurosurgery, Duke University Hospital, Durham, NC 27710, USA
| | - Deb A. Bhowmick
- Division of Spine, Department of Neurosurgery, Duke University Hospital, Durham, NC 27710, USA
| | - Muhammad M. Abd-El-Barr
- Division of Spine, Department of Neurosurgery, Duke University Hospital, Durham, NC 27710, USA
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Khosla I, Anwar FN, Roca AM, Medakkar SS, Loya AC, MacGregor KR, Oyetayo OO, Zheng E, Kaul A, Wolf JC, Federico VP, Lopez GD, Sayari AJ, Singh K. Prognostic Value in Preoperative Veterans RAND-12 Mental Component Score on Clinical Outcomes for Patients Undergoing Minimally Invasive Lateral Lumbar Interbody Fusion. Neurospine 2024; 21:361-371. [PMID: 38291749 PMCID: PMC10992641 DOI: 10.14245/ns.2346730.365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/25/2023] [Accepted: 11/04/2023] [Indexed: 02/01/2024] Open
Abstract
OBJECTIVE To evaluate the effect of Veterans RAND 12-item health survey mental composite score (VR-12 MCS) on postoperative patient-reported outcome measures (PROMs) after undergoing lateral lumbar interbody fusion. METHODS Retrospective data from a single-surgeon database created 2 cohorts: patients with VR-12 MCS ≥ 50 or VR-12 MCS < 50. Preoperative, 6-week, and final follow-up (FF)- PROMs including VR-12 MCS/physical composite score (PCS), 12-item Short Form health survey (SF-12) MCS/PCS, Patient-Reported Outcomes Measurement Information System Physical Function (PROMIS-PF), Patient Health Questionnaire-9 (PHQ-9), visual analogue scale (VAS)-back/leg pain (VAS-BP/LP), and Oswestry Disability Index (ODI) were collected. ∆6-week and ∆FF-PROMs were calculated. Minimal clinically important difference (MCID) achievement rates were determined from established cutoffs from the literature. For intercohort comparison, chi-square analysis was used for categorical variables, and Student t-test for continuous variables. RESULTS Seventy-nine patients were included; 25 were in VR-12 MCS < 50. Mean postoperative follow-up time was 17.12 ± 8.43 months. The VR-12 MCS < 50 cohort had worse VR-12 PCS, SF-12 MCS, PROMIS-PF, PHQ-9, VAS-BP, and ODI scores preoperatively (p ≤ 0.014, all), worse VR-12 MCS/PCS, SF-12 MCS, PROMIS-PF, PHQ-9, and ODI scores at 6-week postoperatively (p ≤ 0.039, all), and worse VR-12 MCS, SF-12 MCS, PROMIS-PF, PHQ-9, VAS-BP, VAS-LP, and ODI scores at FF (p ≤ 0.046, all). The VR-12 MCS < 50 cohort showed greater improvement in VR-12 MCS and SF-12 MCS scores at 6 weeks and FF (p ≤ 0.005, all). The VR-12 MCS < 50 cohort experienced greater MCID achievement for VR-12 MCS, SF-12 MCS, and PHQ-9 (p ≤ 0.006, all). CONCLUSION VR-12 MCS < 50 yielded worse mental health, physical function, pain and disability postoperatively, yet reported greater improvements in magnitude and MCID achievement for mental health.
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Affiliation(s)
- Ishan Khosla
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Fatima N. Anwar
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Andrea M. Roca
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Srinath S. Medakkar
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Alexandra C. Loya
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Keith R. MacGregor
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Omolabake O. Oyetayo
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Eileen Zheng
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Aayush Kaul
- Chicago Medical School at Rosalind Franklin University of Medicine and Science, Chicago, IL, USA
| | - Jacob C. Wolf
- Chicago Medical School at Rosalind Franklin University of Medicine and Science, Chicago, IL, USA
| | - Vincent P. Federico
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Gregory D. Lopez
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Arash J. Sayari
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Kern Singh
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
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Singh M, Wells K, Leary OP, Guglielmo MA. Reliance on Pain Medications Following Elective Spinal Surgery. World Neurosurg 2024; 183:257-258. [PMID: 38245483 DOI: 10.1016/j.wneu.2023.12.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2024]
Affiliation(s)
- Manjot Singh
- Department of Neurosurgery, Warren Alpert Medical School, Brown University, Providence, Rhode Island, USA
| | - Katrina Wells
- Department of Neurosurgery, Warren Alpert Medical School, Brown University, Providence, Rhode Island, USA
| | - Owen P Leary
- Department of Neurosurgery, Warren Alpert Medical School, Brown University, Providence, Rhode Island, USA
| | - Maria A Guglielmo
- Department of Neurosurgery, Warren Alpert Medical School, Brown University, Providence, Rhode Island, USA
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Razak A, Corman B, Servider J, Mavarez-Martinez A, Jin Z, Mushlin H, Bergese SD. Postoperative analgesic options after spine surgery: finding the optimal treatment strategies. Expert Rev Neurother 2024; 24:191-200. [PMID: 38155560 DOI: 10.1080/14737175.2023.2298824] [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] [Received: 06/03/2023] [Accepted: 12/20/2023] [Indexed: 12/30/2023]
Abstract
INTRODUCTION Spine surgery is one of the most common types of surgeries performed in the United States; however, managing postoperative pain following spine surgery has proven to be challenging. Patients with spine pathologies have higher incidences of chronic pain and resultant opioid use and potential for tolerance. Implementing a multimodal plan for postoperative analgesia after spine surgery can lead to enhanced recovery and outcomes. AREAS COVERED This review presents several options for analgesia following spine surgery with an emphasis on multimodal techniques to best aid this specific patient population. In addition to traditional therapeutics, such as acetaminophen, non-steroidal anti-inflammatory medications, and opioids, we discuss intrathecal morphine administration and emerging regional anesthesia techniques. EXPERT OPINION Several adjuncts to improve analgesia following spine surgery are efficacious in the postoperative period. Intrathecal morphine provides sustained analgesia and can be instilled intraoperatively by the surgical team under direct visualization. Local anesthetics deposited under ultrasound guidance by an anesthesiologist trained in regional techniques also provide the opportunity for single injections or continuous analgesia via an indwelling catheter.
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Affiliation(s)
- Alina Razak
- Department of Anesthesiology, Stony Brook University Health Science Center, Stony Brook, NY, USA
| | - Benjamin Corman
- Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, USA
| | - John Servider
- Department of Neurological Surgery, Stony Brook University Health Science Center, Stony Brook, NY, USA
| | - Ana Mavarez-Martinez
- Department of Anesthesiology, Stony Brook University Health Science Center, Stony Brook, NY, USA
| | - Zhaosheng Jin
- Department of Anesthesiology, Stony Brook University Health Science Center, Stony Brook, NY, USA
| | - Harry Mushlin
- Department of Neurological Surgery, Stony Brook University Health Science Center, Stony Brook, NY, USA
| | - Sergio D Bergese
- Department of Anesthesiology, Stony Brook University Health Science Center, Stony Brook, NY, USA
- Department of Neurological Surgery, Stony Brook University Health Science Center, Stony Brook, NY, USA
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Kim SY, Lim YC, Seo BK, Nam D, Ha IH, Lee YS, Lee YJ. A study on the 10-year trend of surgeries performed for lumbar disc herniation and comparative analysis of prescribed opioid analgesics and hospitalization duration: 2010-2019 HIRA NPS Data. BMC Musculoskelet Disord 2024; 25:65. [PMID: 38218767 PMCID: PMC10787428 DOI: 10.1186/s12891-024-07167-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 01/02/2024] [Indexed: 01/15/2024] Open
Abstract
BACKGROUND This study, utilizing the claims data from the Health Insurance Review and Assessment Service of Korea, aimed to examine the 10-year (2010-2019) trends in various types of lumbar spine surgeries performed on patients diagnosed with lumbar herniated intervertebral disc (HIVD), and the current status of opioid prescriptions, as well as the duration of postoperative hospital stays based on the type of surgery performed. METHOD This retrospective cross-sectional study examined patients with one or more national health insurance claims carrying a primary or secondary diagnosis of HIVD (ICD-10 codes: M511, M518, M519) over a 10-year period (2010-2019). From the patients undergoing lumbar spine surgery, we selected those who did not require reoperation within 30 days following the initial lumbar surgery. Our final study sample comprised patients who underwent only one type of surgery. RESULTS Among the patients diagnosed with HIVD and subsequently undergoing lumbar surgery between 2010 and 2019, a slight downward trend was observed in those undergoing open discectomy (OD); however, OD persistently accounted for the highest proportion over the 10 years. Percutaneous endoscopic lumbar discectomy (PELD) demonstrated a consistent upward trend from 2016 to 2018. When inspecting trends, we noted a consistent escalation over the decade in the postoperative opioid prescription rates of strong opioids (50.7% in 2010 to 77.8% in 2019) and tramadol (50.9% in 2010 to 76.8% in 2019). Analyzing these trends by surgery type, spinal fusion exhibited a slightly higher rate of opioid prescriptions than other lumbar surgeries. Regarding the length of postoperative hospital stays, patients undergoing PELD recorded the shortest stay (7.04 ± 6.78 days), while spinal fusion necessitated the longest (20.14 ± 12.18 days). CONCLUSION This study analyzed the trends in types of lumbar spine surgeries, opioid analgesic prescriptions, and length of hospital stays over 10 years (2010-2019) among patients with HIVD in Korea. Our data and findings provide valuable evidence that may prove beneficial for clinicians and researchers involved in HIVD-related practices.
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Affiliation(s)
- Sang Yoon Kim
- Jaseng Hospital of Korean Medicine, 536 Gangnam-daero, Gangnam-gu, Seoul, 06110, Republic of Korea
| | - Yu-Cheol Lim
- Jaseng Spine and Joint Research Institute, Jaseng Medical Foundation, 2F, 540 Gangnam-daero, Gangnam-gu, Seoul, 06110, Republic of Korea
| | - Byung-Kwan Seo
- Department of Acupuncture and Moxibustion, Kyung Hee University Korean Medicine Hospital at Gangdong, Seoul, 05278, Republic of Korea
| | - Dongwoo Nam
- Department of Acupuncture and Moxibustion, Kyung Hee University, Seoul, Republic of Korea
| | - In-Hyuk Ha
- Jaseng Spine and Joint Research Institute, Jaseng Medical Foundation, 2F, 540 Gangnam-daero, Gangnam-gu, Seoul, 06110, Republic of Korea
| | - Ye-Seul Lee
- Jaseng Spine and Joint Research Institute, Jaseng Medical Foundation, 2F, 540 Gangnam-daero, Gangnam-gu, Seoul, 06110, Republic of Korea.
| | - Yoon Jae Lee
- Jaseng Spine and Joint Research Institute, Jaseng Medical Foundation, 2F, 540 Gangnam-daero, Gangnam-gu, Seoul, 06110, Republic of Korea.
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Shrestha N, Han B, Zhao C, Jia W, Luo F. Pre-emptive infiltration with betamethasone and ropivacaine for postoperative pain in laminoplasty and laminectomy (PRE-EASE): a prospective randomized controlled trial. Int J Surg 2024; 110:183-193. [PMID: 37800559 PMCID: PMC10793746 DOI: 10.1097/js9.0000000000000821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 09/25/2023] [Indexed: 10/07/2023]
Abstract
BACKGROUND Postoperative pain after laminoplasty and laminectomy occurs partially from local trauma of the paraspinal tissue. Finding a multimodal analgesic cocktail to enhance the duration and effect of local infiltration analgesia is crucial. Because of the rapid onset and long duration of action of betamethasone, the authors hypothesized that, a pre-emptive multimodal infiltration regimen of betamethasone and ropivacaine reduces pain scores and opioid demand, and improves patient satisfaction following laminoplasty and laminectomy. MATERIALS AND METHODS This prospective, randomized, open-label, blinded endpoint study was conducted between 1 September 2021 and 3 June 2022, and included patients between the ages of 18 and 64 scheduled for elective laminoplasty or laminectomy under general anesthesia, with American Society of Anesthesiologists classification I/II. One hundred sixteen patients were randomly assigned to either the BR (Betamethasone-Ropivacaine) group or the R (Ropivacaine) group in a 1:1 ratio. Each group received pre-emptive infiltration of a total of 10 ml study solution into each level. Every 30 ml of study solution composed of 0.5 ml of betamethasone plus 14.5 ml of saline and 15 ml of 1% ropivacaine for the BR group, and 15 ml of 1% ropivacaine added to 15 ml of saline for the R group. Infiltration of epidural space and intrathecal space were avoided and the spinous process, transverse process, facet joints, and lamina were injected, along with paravertebral muscles and subcutaneous tissue. Cumulative 48 h postoperative butorphanol consumption via PCA (Patient-controlled analgesia) was the primary outcome. Intention-to-treat (ITT) principle was used for primary analysis. RESULTS Baseline characteristics were identical in both groups ( P >0.05). The cumulative 48 h postoperative butorphanol consumption via PCA was 3.0±1.4 mg in the BR group ( n =58), and 7.1±1.2 mg in the R group ( n =58) ( P <0.001). Overall cumulative opioid demand was lower at different time intervals in the BR group ( P <0.001), along with the estimated median time of first analgesia demand via PCA (3.3 h in the BR group and 1.6 h in the R group). The visual analog scale (VAS) score at movement and rest were also significantly lower until 3 months and 6 weeks, respectively. No side effects or adverse events associated with the intervention were observed in this study. CONCLUSIONS Pre-emptive analgesia with betamethasone and ropivacaine provides better postoperative pain management following laminoplasty and laminectomy, compared to ropivacaine alone. This is an effective technique worthy of further evaluation.
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Affiliation(s)
| | - Bo Han
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, People's Republic of China
| | | | - Wenqing Jia
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, People's Republic of China
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Soriano PBO, Haselhuhn JJ, Resch JC, Fischer GA, Swanson DB, Holton KJ, Polly DW. Postoperative use and early discontinuation of intravenous lidocaine in spine patients. Spine Deform 2024; 12:141-148. [PMID: 37610553 DOI: 10.1007/s43390-023-00753-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 08/05/2023] [Indexed: 08/24/2023]
Abstract
PURPOSE Our institution employs a multimodal approach to manage postoperative pain after spine surgery. It involves continuous intravenous (IV) lidocaine until the morning of postoperative day two. This study aimed to determine the rate and reasons for early discontinuation of IV lidocaine in our spine patients. METHODS We conducted a retrospective chart review and included pediatric patients who underwent ≥ 3-level spine surgery and received postoperative IV lidocaine from November 2019 to September 2022. For each case, we recorded the side effects of IV lidocaine, adverse events, time to discontinuation, and discontinuation rate. Subsequently, we used the same methodology to generate an adult cohort for comparison. RESULTS We included 52 pediatric (18M:34F) and 50 (21M:29F) adult patients. The pediatric cohort's mean age was 14 years (8-18), and BMI 23.9 kg/m2 (13.0-42.8). The adult cohort's mean age was 61 years (29-82), and BMI 28.8 kg/m2 (17.2-44.1). IV lidocaine was discontinued prematurely in 21/52 (40.4%) of the pediatric cases and 26/50 (52.0%) of the adult cases (RR = 0.78, p = 0.2428). The side effects noted in the pediatric cases vary, including numbness, visual disturbance, and obtundation, but no seizures. The most common adverse events were fever and motor dysfunction. CONCLUSION The early discontinuation rate of IV lidocaine use after spine surgery for children in our institution does not differ significantly from that of adults. The nature of the side effects and the reasons for discontinuation between the groups were similar. Thus, the safety profile of IV lidocaine for pediatric spine patients is comparable to adults.
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Affiliation(s)
- Paul Brian O Soriano
- Department of Orthopedic Surgery, University of Minnesota, 2512 South 7th Street, Suite R200, Minneapolis, MN, 55455, USA
| | - Jason J Haselhuhn
- Department of Orthopedic Surgery, University of Minnesota, 2512 South 7th Street, Suite R200, Minneapolis, MN, 55455, USA.
| | - Joseph C Resch
- Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA
| | - Gwenyth A Fischer
- Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA
| | - Dana B Swanson
- Department of Orthopedic Surgery, University of Minnesota, 2512 South 7th Street, Suite R200, Minneapolis, MN, 55455, USA
| | - Kenneth J Holton
- Department of Orthopedic Surgery, University of Minnesota, 2512 South 7th Street, Suite R200, Minneapolis, MN, 55455, USA
| | - David W Polly
- Department of Orthopedic Surgery, University of Minnesota, 2512 South 7th Street, Suite R200, Minneapolis, MN, 55455, USA.
- Department of Neurosurgery, University of Minnesota, Minneapolis, MN, USA.
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12
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Bhenderu LS, Lyon KA, Soto JM, Richardson W, Desai R, Rahm M, Huang JH. Ropivacaine-Epinephrine-Clonidine-Ketorolac Cocktail as a Local Anesthetic for Lumbar Decompression Surgery: A Single Institutional Experience. World Neurosurg 2023; 176:e515-e520. [PMID: 37263493 DOI: 10.1016/j.wneu.2023.05.091] [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] [Received: 03/15/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/03/2023]
Abstract
OBJECTIVE The goal of this study is to discuss our initial experience with a multimodal opioid-sparing cocktail containing ropivacaine, epinephrine, clonidine, and ketorolac (RECK) in the postoperative management of lumbar decompression surgeries. METHODS Patients were either administered no local anesthetic at the incision site or were administered a weight-based amount of RECK into the paraspinal musculature and subdermal space surrounding the operative site once the fascia was closed. We performed a retrospective chart review of all patients 18 years of age or older undergoing lumbar laminectomy and lumbar diskectomy surgeries between December 2019 and April 2021. Outcomes including total opioid use, measured as morphine milligram equivalent, length of stay, and postoperative visual analog scores for pain, were collected. Relationships between variables were analyzed with Student's t-test, chi-square tests, and Fisher exact tests. RESULTS A total of 121 patients undergoing 52 lumbar laminectomy and 69 lumbar diskectomy surgeries were identified. For lumbar laminectomy, patients who were administered RECK had decreased opioid use in the postoperative period (11.47 ± 12.32 vs. 78.51 ± 106.10 morphine milligram equivalents, P = 0.019). For patients undergoing lumbar diskectomies, RECK administration led to a shorter length of stay (0.17 ± 0.51 vs. 0.79 ± 1.45 days, P = 0.019) and a lower 2-hour postoperative pain score (3.69 ± 2.56 vs. 5.41 ± 2.28, P = 0.006). CONCLUSIONS The RECK cocktail has potential to be an effective therapeutic option for the postoperative management of lumbar decompression surgeries.
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Affiliation(s)
- Lokeshwar S Bhenderu
- Department of Neurosurgery, Baylor Scott & White Medical Center, Temple, Texas, USA.
| | - Kristopher A Lyon
- Department of Neurosurgery, Baylor Scott & White Medical Center, Temple, Texas, USA
| | - Jose M Soto
- Department of Neurosurgery, Baylor Scott & White Medical Center, Temple, Texas, USA
| | - William Richardson
- Department of Neurosurgery, Baylor Scott & White Medical Center, Temple, Texas, USA
| | - Ronak Desai
- Department of Orthopedic Surgery, Baylor Scott & White Medical Center, Temple, Texas, USA
| | - Mark Rahm
- Department of Orthopedic Surgery, Baylor Scott & White Medical Center, Temple, Texas, USA
| | - Jason H Huang
- Department of Neurosurgery, Baylor Scott & White Medical Center, Temple, Texas, USA
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Zhu J, Wu Z, Huang G, Zhong Y, Peng C. Effect of Erector Spinae Plane Block in Terms of Analgesic Efficacy in Elderly Patients Undergoing Posterior Lumbar Spine Surgery: A Retrospective, Propensity-Score Matched Study. Pain Ther 2023; 12:1027-1037. [PMID: 37266909 PMCID: PMC10289959 DOI: 10.1007/s40122-023-00527-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 05/10/2023] [Indexed: 06/03/2023] Open
Abstract
INTRODUCTION For preoperative analgesia during a variety of operations, the erector spinae plane block (ESPB) has grown in popularity. However, its effectiveness in lumbar surgery is still unknown. The purpose of this study was to investigate the potential benefits of ESPB in enhancing analgesic efficacy in elderly individuals following posterior lumbar spine surgery. METHODS Patients aged 65 years or older who underwent elective posterior lumbar instrumented fusion (with or without decompression) at our institution between January 2019 and June 2022 were included. Demographic data, comorbidities, and results of preoperative screening were retrospectively collected. Propensity score matching (PSM) was performed in a ratio of 1:1 for control and ESPB groups. The primary outcome was opioid consumption at 24 h after surgery. Secondary outcomes was visual analog scale (VAS) pain scores at rest in the first 24 h. Additional secondary outcomes included number of patients requesting rescue analgesia, incidence of nausea and vomiting, time to the first request for analgesia via patient-controlled analgesia, and length of stay. RESULTS A total of 382 patients were included, of whom 119 received ESPB. The mean age of the study patients was 70.6 years old, and 254 (66.5%) were male. After PSM, each group comprised 115 patients. Patients in the ESPB group showed a significantly lower opioid consumption at 24 h after surgery. Compared with the control group, VAS pain scores at rest in the first 24 h, number of patient-controlled intravenous analgesia (PCIA) pump compressions, ratio of patients requesting rescue analgesia, incidence of nausea and vomiting, and length of stay were significantly reduced in the ESPB group. There were no significant differences between the two groups regarding safety outcomes. CONCLUSIONS ESPB reduces short-term opioid consumption while providing safe and effective analgesia in elderly patients undergoing posterior lumbar surgery.
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Affiliation(s)
- Jianqin Zhu
- Department of Sleep Medicine, Ganzhou People's Hospital, Ganzhou, 341000, China
| | - Zhenjun Wu
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, 530023, China
| | - Guiming Huang
- Department of Anesthesiology, Ganzhou People's Hospital, Ganzhou, 341000, China
| | - Yuting Zhong
- Department of Anesthesiology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, China
| | - Cheng Peng
- Department of Anesthesiology, Ganzhou People's Hospital, Ganzhou, 341000, China.
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Zhang Y, Cui F, Ma JH, Wang DX. Mini-dose esketamine-dexmedetomidine combination to supplement analgesia for patients after scoliosis correction surgery: a double-blind randomised trial. Br J Anaesth 2023:S0007-0912(23)00234-9. [PMID: 37302963 DOI: 10.1016/j.bja.2023.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 06/13/2023] Open
Abstract
BACKGROUND Patients often experience severe pain after scoliosis correction surgery. Esketamine and dexmedetomidine each improves analgesia but can produce side-effects. We therefore tested the hypothesis that a mini-dose esketamine-dexmedetomidine combination safely improves analgesia. METHODS Two hundred male and female adults having scoliosis correction surgery were randomised to patient-controlled sufentanil analgesia (4 μg kg-1 in normal saline) with either a combined supplement (esketamine 0.25 mg ml-1 and dexmedetomidine 1 μg ml-1) or placebo. The primary outcome was the incidence of moderate-to-severe pain within 72 h, defined as a numeric rating scale (NRS: 0=no pain and 10=worst pain) score ≥4 at any of seven time points. Amongst secondary outcomes, subjective sleep quality was assessed with an NRS score (0=best sleep and 10=worst sleep) for the first five postoperative nights. RESULTS There were 199 subjects included in the intention-to-treat analysis. Mean infusion rates were 5.5 μg kg-1 h-1 for esketamine and 0.02 μg kg-1 h-1 for dexmedetomidine. The primary outcome incidence was lower with the combined supplement (65.7% [65/99]) than with placebo (86.0% [86/100]; relative risk 0.76; 95% confidence interval: 0.65-0.90; P=0.001). Subjects given the combined supplement had lower pain intensity at rest at five time points (median difference -1 point; P≤0.005), lower pain intensity with movement at six time points (median difference -1 point; P≤0.001), and better subjective sleep quality for the first 5 postoperative nights (median difference -2 to -1 points; P<0.001). Adverse events did not differ between groups. CONCLUSIONS The mini-dose esketamine-dexmedetomidine combination safely improved analgesia and subjective sleep quality after scoliosis correction surgery. CLINICAL TRIAL REGISTRATION NCT04791059.
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Affiliation(s)
- Ying Zhang
- Department of Anesthesiology, Peking University First Hospital, Beijing, China
| | - Fan Cui
- Department of Anesthesiology, Peking University First Hospital, Beijing, China
| | - Jia-Hui Ma
- Department of Anesthesiology, Peking University First Hospital, Beijing, China
| | - Dong-Xin Wang
- Department of Anesthesiology, Peking University First Hospital, Beijing, China; Outcomes Research Consortium, Cleveland, OH, USA.
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Boran O, Kose G. A Turkish Study to Identify the Discharge Learning Needs of Spinal Surgery Patients. J Neurosci Nurs 2023; 55:86-90. [PMID: 36917823 DOI: 10.1097/jnn.0000000000000702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
Abstract
ABSTRACT PURPOSE: The aim of this study was to identify the learning needs of spinal surgery patients before hospital discharge. METHODS: This cross-sectional study consisted of 117 spinal surgery patients admitted to the neurosurgery department between October 2019 and March 2020. Data were collected using a descriptive information form, visual analog scale, and the Patient Learning Needs Scale. Data were analyzed using descriptive statistics, Mann-Whitney U and Kruskal-Wallis tests, and Spearman correlation analysis. RESULTS: The mean age of the participants was 54 years, 54.7% were male, and 59% underwent surgery because of spinal disc herniation. The mean Patient Learning Needs Scale score was 188.74. The primary learning needs of the patients were related to the dimensions of activities of living, medication, treatment, and complications, whereas the feelings related to condition were the least-demanded dimension of learning needs. Sex and occupation were the primary factors influencing learning needs. CONCLUSION: The level of learning needs in spinal surgery patients was relatively high. Therefore, discharge education may be planned in line with the learning needs and priorities of these patients, and sex and occupation may be considered while planning discharge education.
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Pasqualini I, Rullán PJ, Deren M, Krebs VE, Molloy RM, Nystrom LM, Piuzzi NS. Team Approach: Use of Opioids in Orthopaedic Practice. JBJS Rev 2023; 11:01874474-202303000-00008. [PMID: 36972360 DOI: 10.2106/jbjs.rvw.22.00209] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
» The opioid epidemic represents a serious health burden on patients across the United States. » This epidemic is particularly pertinent to the field of orthopaedics because it is one of the fields providing the highest volume of opioid prescriptions. » The use of opioids before orthopaedic surgery has been associated with decreased patient-reported outcomes, increased surgery-related complications, and chronic opioid use. » Several patient-level factors, such as preoperative opioid consumption and musculoskeletal and mental health conditions, contribute to the prolonged use of opioids after surgery, and various screening tools for identifying high-risk drug use patterns are available. » The identification of these high-risk patients should be followed by strategies aimed at mitigating opioid misuse, including patient education, opioid use optimization, and a collaborative approach between health care providers.
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Affiliation(s)
- Ignacio Pasqualini
- Department of Orthopaedic Surgery, Cleveland Clinic Foundation, Cleveland, Ohio
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Rezvani M, Asadi J, Sourani A, Foroughi M, Tehrani DS. In-Fracture Pedicular Screw Placement During Ligamentotaxis Following Traumatic Spine Injuries, a Randomized Clinical Trial on Outcomes. Korean J Neurotrauma 2023; 19:90-102. [PMID: 37051034 PMCID: PMC10083448 DOI: 10.13004/kjnt.2023.19.e9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/16/2023] [Accepted: 02/02/2023] [Indexed: 03/22/2023] Open
Abstract
Objective To investigate the efficacy and safety of two different techniques for spinal ligamentotaxis. Spine ligamentotaxis reduces the number of retropulsed bone fragments in the fractured vertebrae. Two different ligamentotaxis techniques require clinical evaluation. Methods This was a randomized clinical trial. The case group was defined as one pedicular screw insertion into a fractured vertebra, and the control group as a no-pedicular screw in the index vertebra. Spine biomechanical values were defined as primary outcomes and complications as secondary outcomes. Results A total of 105 patients were enrolled; 23 were excluded for multiple reasons, and the remaining were randomly allocated into the case (n=40) and control (n=42) groups. The patients were followed up and analyzed (n=56). The postoperative mid-sagittal diameter of the vertebral canal (MSD), kyphotic deformity correction, and restoration of the anterior height of the fractured vertebrae showed equal results in both groups. Postoperative retropulsion percentage and pain were significantly lower in the case group than in the control group (p=0.003 and p=0.004, respectively). There were no group preferences for early or long-term postoperative complications. Conclusions Regarding clinical and imaging properties, inserting one extra pedicular screw in a fractured vertebra during ligamentotaxis results in better retropulsion reduction and lower postoperative pain.
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Affiliation(s)
- Majid Rezvani
- Department of Neurosurgery, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jamalodin Asadi
- Department of Neurosurgery, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Arman Sourani
- Department of Neurosurgery, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mina Foroughi
- Isfahan Medical Students’ Research Committee (IMSRC), Isfahan University of Medical Sciences, Isfahan, Iran
| | - Donya Sheibani Tehrani
- Department of Neurosurgery, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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