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Lv H, Liao S, Shi Z, Guo Y, Zhou J, Chen H, Luo F, Xu J, Zhang Z, Zhang Z. Application of metagenomic next-generation sequencing for rapid molecular identification in spinal infection diagnosis. Front Cell Infect Microbiol 2024; 14:1382635. [PMID: 39011516 PMCID: PMC11247381 DOI: 10.3389/fcimb.2024.1382635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 06/10/2024] [Indexed: 07/17/2024] Open
Abstract
Objective This study aimed to determine the sensitivity and specificity of metagenomic next-generation sequencing (mNGS) for detecting pathogens in spinal infections and to identify the differences in the diagnostic performance between mNGS and targeted next-generation sequencing (tNGS). Methods A total of 76 consecutive patients with suspected spinal infections who underwent mNGS, culture, and histopathological examinations were retrospectively studied. The final diagnosis of the patient was determined by combining the clinical treatment results, pathological examinations, imaging changes and laboratory indicators. The sensitivity and specificity of mNGS and culture were determined. Results The difference between the two detection rates was statistically significant (p < 0.001), with mNGS exhibiting a significantly higher detection rate (77.6% versus 18.4%). The average diagnosis time of mNGS was significantly shorter than that of bacterial culture (p < 0.001, 1.65 versus 3.07 days). The sensitivity and accuracy of mNGS were significantly higher than that of the culture group (p < 0.001, 82.3% versus 17.5%; 75% versus 27.6%), whereas the specificity of mNGS (42.9%) was lower than that of the culture group (p > 0.05, 42.9% versus 76.9%). The sensitivity, specificity, accuracy, and positive predictive value (PPV) of pus were higher than those of tissue samples for mNGS, whereas for culture, the sensitivity, specificity, accuracy, and PPV of tissue samples were higher than those of pus. tNGS demonstrated higher sensitivity and accuracy in diagnosing tuberculosis (TB) than mNGS (80% versus 50%; 87.5% versus 68.8%). Conclusion mNGS for spinal infection demonstrated better diagnostic value in developing an antibiotic regimen earlier, and it is recommended to prioritize pus samples for testing through mNGS. Moreover, tNGS outperformed other methods for diagnosing spinal TB and identifying antibiotic-resistance genes in drug-resistant TB.
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Affiliation(s)
- Hui Lv
- Department of Spine Surgery, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, Chongqing, China
- Department of Orthopaedic, Southwest Hospital, The First Affiliated Hospital of Army Medical University, Chongqing, China
| | - Sheng Liao
- Department of Spine Surgery, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, Chongqing, China
| | - Zhenzhen Shi
- Department of Medecine, Dinfectome Inc., Nanjing, Jiangsu, China
| | - Yuan Guo
- Department of Spine Surgery, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, Chongqing, China
| | - JianHong Zhou
- Department of Spine Surgery, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, Chongqing, China
| | - Hui Chen
- Department of Spine Surgery, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, Chongqing, China
| | - Fei Luo
- Department of Spine Surgery, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, Chongqing, China
- Department of Orthopaedic, Southwest Hospital, The First Affiliated Hospital of Army Medical University, Chongqing, China
| | - JianZhong Xu
- Department of Spine Surgery, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, Chongqing, China
- Department of Orthopaedic, Southwest Hospital, The First Affiliated Hospital of Army Medical University, Chongqing, China
| | - ZhongRong Zhang
- Department of Spine Surgery, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, Chongqing, China
- Department of Orthopaedic, Southwest Hospital, The First Affiliated Hospital of Army Medical University, Chongqing, China
| | - ZeHua Zhang
- Department of Spine Surgery, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, Chongqing, China
- Department of Orthopaedic, Southwest Hospital, The First Affiliated Hospital of Army Medical University, Chongqing, China
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Kim J, Oh SH, Kim SW, Kim TH. The epidemiology of concurrent infection in patients with pyogenic spine infection and its association with early mortality: A nationwide cohort study based on 10,695 patients. J Infect Public Health 2023; 16:981-988. [PMID: 37148755 DOI: 10.1016/j.jiph.2023.04.010] [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: 01/19/2023] [Revised: 04/06/2023] [Accepted: 04/10/2023] [Indexed: 05/08/2023] Open
Abstract
BACKGROUND Generally, a sufficient duration of relevant antibiotics based on an appropriate culture combined with proper surgical treatment guarantees a favorable clinical outcome in patients with pyogenic spine infections. However, a patient's condition often deteriorates as concurrent infections occur in other organs, leading to mortality. Therefore, this study aimed to investigate the epidemiology of concurrent infections in patients with a pyogenic spine infection and estimate the rates and risks of early mortality. METHODS Patients with a pyogenic spine infection were identified using a national claims database that includes the entire population. The epidemiology of the six types of concurrent infections was investigated, and the corresponding early mortality rates and risks were estimated. The results were validated internally by bootstrapping and externally by defining two additional cohorts for sensitivity analysis. RESULTS Among 10,695 patients with a pyogenic spine infection, the prevalence of the six types of concurrent infections was 11.3 % for urinary tract infections, 9.4 % for intra-abdominal infections, 8.5 % for pneumonia, 4.6 % for septic arthritis or osteomyelitis of the extremities, 0.7 % for central nervous system infections, and 0.5 % for cardiac infections. Patients with a concurrent infection had approximately 4-fold greater mortality than those without (3.3 % vs. 0.8 %). The early mortality rates were particularly higher in patients with multiple or specific types of concurrent infections, including central nervous system infections, cardiac infections, and pneumonia. In addition, the mortality trends differed significantly according to the number and type of concurrent infections. CONCLUSIONS These data on six types of concurrent infection among patients with pyogenic spinal infection can be used as a source of reference by clinicians.
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Affiliation(s)
- Jihye Kim
- Division of Infection, Department of Pediatrics, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, the Republic of Korea
| | - Seung Ho Oh
- Spine Center, Department of Orthopedics, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, the Republic of Korea
| | - Seok Woo Kim
- Spine Center, Department of Orthopedics, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, the Republic of Korea
| | - Tae-Hwan Kim
- Spine Center, Department of Orthopedics, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, the Republic of Korea.
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Lim JS, Kim TH. Recurrence Rates and Its Associated Factors after Early Spinal Instrumentation for Pyogenic Spondylodiscitis: A Nationwide Cohort Study of 2148 Patients. J Clin Med 2022; 11:jcm11123356. [PMID: 35743427 PMCID: PMC9225581 DOI: 10.3390/jcm11123356] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/07/2022] [Accepted: 06/08/2022] [Indexed: 01/11/2023] Open
Abstract
Recent studies have consistently reported the safety and effectiveness of early spinal instrumentation for pyogenic spondylodiscitis. However, none of these studies investigated the recurrence rate or associated factors based on this specific group of patients. Recurrence prediction models that are not based on a homogenous cohort of patients undergoing early spinal instrumentation show theoretical limitations for clinical use. A nationwide, population-based, retrospective cohort study using a claims database was planned to investigate the recurrence rate and its associated factors in patients who underwent early instrumented spinal fusion surgery for pyogenic spondylodiscitis. We used data from the Korean National Health Insurance claims database collected between 2014 and 2018. A total of 2148 patients who underwent early (within 6 weeks after the diagnosis) instrumented spinal fusion surgery for pyogenic spondylodiscitis were included, including 1925 patients (90%) without recurrence and 223 patients (10%) with recurrence. Logistic regression models were used to identify factors associated with recurrence, and sensitivity analysis was performed according to two different definitions for recurrence: shorter (2 weeks or more) and longer (6 weeks or more) periods of antibiotic therapy for recurrence. The recurrence rates in our cohort were 14.1%, 10.4%, and 8.0% at 2, 4, and 6 weeks, respectively, in relation to the duration of antibiotic treatment for recurrence. We identified age 60−69 years (OR = 2.42), age > 70 years (OR = 2.29), posterior thoracic approach (OR = 1.85), multiple surgical approaches (OR = 4.17), use of a cage (OR = 1.66), transfusion (OR = 2.55), antibiotics for resistant organisms (OR = 2.55), and systemic steroid treatment over 2 weeks (OR = 2.27) as the factors associated with recurrence. The recurrence rates and associated factors from our first population-based and the largest clinical study can be practically used as a reasonable reference and provide clinicians with an acceptable tool for the comprehensive risk assessment for recurrence after early spinal instrumentation for pyogenic spondylodiscitis.
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Affiliation(s)
| | - Tae-Hwan Kim
- Correspondence: ; Tel.: +82-31-380-6000; Fax: +82-31-380-6008
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Clinical Characteristics of Patients with Pyogenic Vertebral Osteomyelitis and Concurrent Infections and Their Clinical Outcomes. J Pers Med 2022; 12:jpm12040541. [PMID: 35455656 PMCID: PMC9028400 DOI: 10.3390/jpm12040541] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 03/24/2022] [Accepted: 03/28/2022] [Indexed: 11/16/2022] Open
Abstract
Patients with pyogenic vertebral osteomyelitis (PVO) often develop concurrent infections, and a significant number of these patients show rapid deterioration in their medical condition, leading to mortality without PVO-related structural instability or neurological deficits. To improve clinical outcomes, we investigated the clinical presentation and treatment outcomes of patients with PVO and concurrent infections. This study included 695 patients with PVO, of which 175 (25%) had concurrent infections and 520 (75%) did not. The clinical characteristics of the two groups were compared, and multivariable analysis was performed to identify the association between concurrent infections and clinical outcomes. Patients with concurrent infections were older and had more comorbidities than those without. Moreover, there were significant intergroup differences in the anatomical involvement of PVO, and patients with concurrent infections had a higher number of regions involved more frequently than those without concurrent infections (15% vs. 6%). In contrast, patients with concurrent infections showed a lower degree of focal invasiveness, including a lower incidence of posterior abscess (47% vs. 59%; p = 0.008) and fewer neurological impairments according to the American Spinal Injury Association grade (p < 0.001) than those without concurrent infections. The causative organisms also differed significantly between the two groups, and patients with concurrent infections had a greater proportion of Gram-negative infections (31% vs. 16%, respectively) and a smaller proportion of methicillin-resistant S. aureus infections than those without concurrent infections (6% vs. 24%). Consequently, their clinical outcomes were significantly different, and patients with concurrent infections showed lower recurrence and higher mortality rates. We investigated the 1-year recurrence and mortality rates and their 95% confidence intervals according to the types of concurrent infections and their time of diagnosis and found variations in these parameters. Our results, based on a large number of patients, can be practically used as a reasonable reference to warn clinicians of the clinical risks of concurrent infections in patients with PVO and to help predict their clinical outcomes.
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Lee JH, Kim J, Kim TH. Clinical Outcomes in Older Patients Aged over 75 Years Who Underwent Early Surgical Treatment for Pyogenic Vertebral Osteomyelitis. J Clin Med 2021; 10:jcm10225451. [PMID: 34830734 PMCID: PMC8619355 DOI: 10.3390/jcm10225451] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/24/2021] [Accepted: 11/17/2021] [Indexed: 01/15/2023] Open
Abstract
Older patients with pyogenic vertebral osteomyelitis (PVO) usually have more medical comorbidities compared with younger patients, and present with advanced infections from different causative organisms. To aid surgical decision-making, we compared surgical outcomes of older patients with PVO to those who underwent nonoperative treatment. We identified the risk factors for adverse post-operative outcomes, and analyzed the clinical risks from further spinal instrumentation. This retrospective comparative study included 439 patients aged ≥75 years with PVO. Multivariable analysis was performed to compare treatment outcomes among three groups: 194, 130, and 115 patients in the non-operative, non-instrumented, and instrumented groups, respectively. The risk factors for adverse outcomes after surgical treatment were evaluated using a logistic regression model, and the estimates of the multivariable models were internally validated using bootstrap samples. Recurrence and mortality of these patients were closely associated with neurologic deficits, and increased surgical invasiveness, resulting from additional spinal instrumentation, did not increase the risk of recurrence or mortality. We propose that surgical treatment for these patients should focus on improving neurologic deficits through immediate and sufficient removal of abscesses. Spinal instrumentation can be performed if indicated, within reasonable clinical risk.
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Affiliation(s)
- Jeong Hwan Lee
- Spine Center, Department of Orthopedics, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Gyeonggi-do, Anyang 14068, Korea;
| | - Jihye Kim
- Department of Pediatrics, Division of Infection, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul 05355, Korea;
| | - Tae-Hwan Kim
- Spine Center, Department of Orthopedics, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Gyeonggi-do, Anyang 14068, Korea;
- Correspondence: ; Tel.: +82-31-380-6000; Fax: +82-31-380-6008
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