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Rumalla KC, Covell MM, Skandalakis GP, Rumalla K, Kassicieh AJ, Roy JM, Kazim SF, Segura A, Bowers CA. The frailty-driven predictive model for failure to rescue among patients who experienced a major complication following cervical decompression and fusion: an ACS-NSQIP analysis of 3,632 cases (2011-2020). Spine J 2024; 24:582-589. [PMID: 38103740 DOI: 10.1016/j.spinee.2023.12.003] [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: 08/31/2023] [Revised: 12/03/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
BACKGROUND CONTEXT Preoperative risk stratification for patients considering cervical decompression and fusion (CDF) relies on established independent risk factors to predict the probability of complications and outcomes in order to help guide pre and perioperative decision-making. PURPOSE This study aims to determine frailty's impact on failure to rescue (FTR), or when a mortality occurs within 30 days following a major complication. STUDY DESIGN/SETTING Cross-sectional retrospective analysis of retrospective and nationally-representative data. PATIENT SAMPLE The American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) database was queried for all CDF cases from 2011-2020. OUTCOME MEASURES CDF patients who experienced a major complication were identified and FTR was calculated as death or hospice disposition within 30 days of a major complication. METHODS Frailty was measured by the Risk Analysis Index-Revised (RAI-Rev). Baseline patient demographics and characteristics were compared for all FTR patients. Significant factors were assessed by univariate and multivariable regression for the development of a frailty-driven predictive model for FTR. The discriminative ability of the predictive model was assessed using a receiving operating characteristic (ROC) curve analysis. RESULTS There were 3632 CDF patients who suffered a major complication and 7.6% (277 patients) subsequently expired or dispositioned to hospice, the definition of FTR. Independent predictors of FTR were nonelective surgery, frailty, preoperative intubation, thrombosis or embolic complication, unplanned intubation, on ventilator for >48 hours, cardiac arrest, and septic shock. Frailty, and a combination of preoperative and postoperative risk factors in a predictive model for FTR, achieved outstanding discriminatory accuracy (C-statistic = 0.901, CI: 0.883-0.919). CONCLUSION Preoperative and postoperative risk factors, combined with frailty, yield a highly accurate predictive model for FTR in CDF patients. Our model may guide surgical management and/or prognostication regarding the likelihood of FTR after a major complication postoperatively with CDF patients. Future studies may determine the predictive ability of this model in other neurosurgical patient populations.
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Affiliation(s)
- Kranti C Rumalla
- Feinberg School of Medicine, Northwestern University, 420 E Superior St., Chicago, IL, 60611, USA
| | - Michael M Covell
- School of Medicine, Georgetown University, 3900 Reservoir Road NW, Washington, DC, 20007, USA
| | - Georgios P Skandalakis
- Department of Neurosurgery, University of New Mexico Hospital, 2211 Lomas Blvd NE, Albuquerque, NM, 87106, USA
| | - Kavelin Rumalla
- Department of Neurosurgery, University of New Mexico Hospital, 2211 Lomas Blvd NE, Albuquerque, NM, 87106, USA
| | - Alexander J Kassicieh
- Department of Neurosurgery, University of New Mexico Hospital, 2211 Lomas Blvd NE, Albuquerque, NM, 87106, USA
| | - Joanna M Roy
- Topiwala National Medical College, Mumbai Central, Mumbai, Maharashtra 400008, India
| | - Syed Faraz Kazim
- Department of Neurosurgery, University of New Mexico Hospital, 2211 Lomas Blvd NE, Albuquerque, NM, 87106, USA
| | - Aaron Segura
- Department of Neurosurgery, University of New Mexico Hospital, 2211 Lomas Blvd NE, Albuquerque, NM, 87106, USA
| | - Christian A Bowers
- Bowers Neurosurgical Frailty and Outcomes Data Science Lab, 8342 S Levine Ln, Sandy, UT, 84070, USA.
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Tachibana N, Michihata N, Oichi T, Nagata K, Nakamoto H, Ohtomo N, Yoshida Y, Nakajima K, Miyahara J, Kato S, Doi T, Taniguchi Y, Matsubayashi Y, Tanaka S, Yasunaga H, Oshima Y. Postoperative Complications of Surgery for Cervical Spondylotic Myelopathy with and Without Athetoid Cerebral Palsy. Global Spine J 2024:21925682241239610. [PMID: 38468399 DOI: 10.1177/21925682241239610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/13/2024] Open
Abstract
STUDY DESIGN Retrospective cohort study. OBJECTIVES With the aging of the Japanese population, patients with athetoid cerebral palsy (ACP) are getting older, and the rate of surgery for CSM is increasing in ACP patients. However, postoperative complications of such surgery among adult patients with ACP have not been reported yet. We investigated postoperative complications of surgery for CSM with ACP and compared them with those of surgery for CSM without ACP using a national inpatient database of Japan. METHODS Using the Diagnosis Procedure Combination database, we identified 61382 patients who underwent surgery for CSM from July 2010 to March 2018. We examined patient backgrounds, surgical procedures, and type of hospital, and a 4:1 propensity score matching was performed to compare the outcomes between the non-ACP and ACP groups. RESULTS There were 60 847 patients without ACP and 535 patients with ACP. The mean age was 68.5 years in the non-ACP group and 55 years in the ACP group. The percentages of patients who underwent fusion surgery were 21.6% and 68.8% in the non-ACP and ACP groups, respectively. The 4:1 propensity score matching selected 1858 in the non-ACP group and 465 in the ACP group. The ACP group was more likely to have postoperative urinary tract infection (.4% vs 2.8%, P < .001), postoperative pneumonia (.4% vs 2.4%, P < .001), and 90-day readmission for reoperation (1.9% vs 4.3%, P = .003). CONCLUSIONS We found that ACP patients were more vulnerable to postoperative complications and reoperation after CSM than non-ACP patients.
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Affiliation(s)
- Naohiro Tachibana
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Japan
| | - Nobuaki Michihata
- Department of Health Services Research, Graduate School of Medicine, The University of Tokyo, Japan
| | - Takeshi Oichi
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Japan
| | - Kosei Nagata
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Japan
| | - Hideki Nakamoto
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Japan
| | - Nozomu Ohtomo
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Japan
| | - Yuichi Yoshida
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Japan
| | - Koji Nakajima
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Japan
| | - Junya Miyahara
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Japan
| | - So Kato
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Japan
| | - Toru Doi
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Japan
| | - Yuki Taniguchi
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Japan
| | | | - Sakae Tanaka
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Japan
| | - Hideo Yasunaga
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, Japan
| | - Yasushi Oshima
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Japan
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Okada R, Son SM, Fresquez Z, Formanek B, Mertz K, Buser Z, Wang JC. Association of Hyperlipidemia With Perioperative Complications in Posterior Cervical Spine Fusion: A Comparative Retrospective Study. Clin Spine Surg 2023; 36:E457-E463. [PMID: 37482645 DOI: 10.1097/bsd.0000000000001497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 06/21/2023] [Indexed: 07/25/2023]
Abstract
STUDY DESIGN A retrospective database study. OBJECTIVES The purpose of the current study was to investigate the impact of hyperlipidemia (HLD) on the incidence of perioperative complications associated with posterior cervical spine fusion (PCF). BACKGROUND HLD is a very common disease that leads to atherosclerosis. Therefore, it can cause fatal diseases as well as lifestyle-related diseases. The possible impact of HLD on outcomes after PCF has not yet been investigated. METHODS Patients with cervical degeneration underwent initial PCF from 2010 through the third quarter of 2020 using the MSpine subset of the PearlDiver Patient Record Database. The incidence of perioperative complications was queried using relevant ICD-9, 10, and CPT codes. χ 2 analysis was performed in age-, sex-, and Charlson Comorbidity Index (CCI)-matched populations to compare between non-HLD and HLD patients in each single-level and multilevel PCF. RESULTS Through propensity score matching, 1600 patients each in the HLD and non-HLD groups were analyzed in the single-level PCF, 6855 patients were analyzed in the multilevel PCF were analyzed. The comorbidity of HLD significantly decreased the incidence of respiratory failure in single-level PCF (OR=0.58, P <0.01). In the multilevel PCF, the presence of HLD increased the incidence of cervicalgia (OR=1.26, P =0.030). On the contrary, the incident of spinal cord injury (OR=0.72, P <0.01), dysphagia (OR=0.81, P =0.023), respiratory failure (OR=0.85, P =0.030), pneumonia (OR=0.70, P =0.045), neurological bladder (OR=0.84, P =0.041), and urinary tract infection (OR=0.85, P =0.021) in the HLD group were significantly lower than those in non-HLD group. CONCLUSIONS In the current study, the presence of HLD significantly increased the incidence of postoperative cervicalgia in multilevel PCF. On the other hand, the incidence of some complications was significantly decreased with HLD. Further studies are needed taking into account other factors such as the treatment of HLD, its efficacy, and intraoperative events. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- Rintaro Okada
- Department of Orthopaedic Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Seung Min Son
- Department of Orthopaedic Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Zoe Fresquez
- Department of Orthopaedic Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Blake Formanek
- University of Queensland School of Medicine, Ochsner Clinical School, Queensland, Australia
| | - Kevin Mertz
- Department of Orthopaedic Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Zorica Buser
- Department of Orthopaedic Surgery, Grossman School of Medicine, New York University, New York, NY
| | - Jeffrey C Wang
- Department of Orthopaedic Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA
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Jayaram RH, Joo PY, Gouzoulis MJ, Ratnasamy PP, Caruana DL, Grauer JN. Single-level Anterior Cervical Discectomy and Fusion Results in Lower Five-year Revisions than Posterior Cervical Foraminotomy in a Large National Cohort. Spine (Phila Pa 1976) 2023; 48:1266-1271. [PMID: 37339256 DOI: 10.1097/brs.0000000000004754] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 06/05/2023] [Indexed: 06/22/2023]
Abstract
STUDY DESIGN A retrospective cohort study using the 2010-2020 MSpine PearlDiver administrative data set. OBJECTIVE To compare perioperative adverse events and five-year revisions for single-level anterior cervical discectomy and fusion (ACDF) versus posterior cervical foraminotomy (PCF). SUMMARY OF BACKGROUND DATA Cervical disk disease can often be treated surgically using single-level ACDF or PCF. Prior studies have suggested that posterior approaches provide similar short-term outcomes as ACDF; however, posterior procedures may have an increased risk of revision surgery. MATERIALS AND METHODS The database was queried for patients undergoing elective single-level ACDF or PCF (excluding cases performed for myelopathy, trauma, neoplasm, and/or infection). Outcomes, including specific complications, readmission, and reoperations, were assessed. Multivariable logistic regression was used to ascertain odds ratios (OR) of 90-day adverse events controlling for age, sex, and comorbidities. Kaplan-Meier survival analysis was performed to determine five-year rates of cervical reoperation in the ACDF and PCF cohorts. RESULTS A total of 31,953 patients treated by ACDF (29,958, 93.76%) or PCF (1995, 6.24%) were identified. Multivariable analysis, controlling for age, sex, and comorbidities, demonstrated that PCF was associated with significantly greater odds of aggregated serious adverse events (OR 2.17, P <0.001), wound dehiscence (OR 5.89, P <0.001), surgical site infection (OR 3.66, P <0.001), and pulmonary embolism (OR 1.72, P =0.04). However, PCF was associated with significantly lower odds of readmission (OR 0.32, P <0.001), dysphagia (OR 0.44, P <0.001), and pneumonia (OR 0.50, P =0.004). At five years, PCF cases had a significantly higher cumulative revision rate compared with ACDF cases (19.0% vs. 14.8%, P <0.001). CONCLUSIONS The current study is the largest to date to compare short-term adverse events and five-year revision rates between single-level ACDF and PCF for nonmyelopathy elective cases. Perioperative adverse events differed by procedure, and it was notable that the incidence of cumulative revisions was higher for PCF. These findings can be used in decision-making when there is clinical equipoise between ACDF and PCF.
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Affiliation(s)
- Rahul H Jayaram
- Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, CT
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Shah AA, Devana SK, Lee C, Olson TE, Upfill-Brown A, Sheppard WL, Lord EL, Shamie AN, van der Schaar M, SooHoo NF, Park DY. Development and External Validation of a Risk Calculator for Prediction of Major Complications and Readmission After Anterior Cervical Discectomy and Fusion. Spine (Phila Pa 1976) 2023; 48:460-467. [PMID: 36730869 PMCID: PMC10023283 DOI: 10.1097/brs.0000000000004531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 10/22/2022] [Indexed: 02/04/2023]
Abstract
STUDY DESIGN A retrospective, case-control study. OBJECTIVE We aim to build a risk calculator predicting major perioperative complications after anterior cervical fusion. In addition, we aim to externally validate this calculator with an institutional cohort of patients who underwent anterior cervical discectomy and fusion (ACDF). SUMMARY OF BACKGROUND DATA The average age and proportion of patients with at least one comorbidity undergoing ACDF have increased in recent years. Given the increased morbidity and cost associated with perioperative complications and unplanned readmission, accurate risk stratification of patients undergoing ACDF is of great clinical utility. METHODS This is a retrospective cohort study of adults who underwent anterior cervical fusion at any nonfederal California hospital between 2015 and 2017. The primary outcome was major perioperative complication or 30-day readmission. We built standard and ensemble machine learning models for risk prediction, assessing discrimination, and calibration. The best-performing model was validated on an external cohort comprised of consecutive adult patients who underwent ACDF at our institution between 2013 and 2020. RESULTS A total of 23,184 patients were included in this study; there were 1886 cases of major complication or readmissions. The ensemble model was well calibrated and demonstrated an area under the receiver operating characteristic curve of 0.728. The variables most important for the ensemble model include male sex, medical comorbidities, history of complications, and teaching hospital status. The ensemble model was evaluated on the validation cohort (n=260) with an area under the receiver operating characteristic curve of 0.802. The ensemble algorithm was used to build a web-based risk calculator. CONCLUSION We report derivation and external validation of an ensemble algorithm for prediction of major perioperative complications and 30-day readmission after anterior cervical fusion. This model has excellent discrimination and is well calibrated when tested on a contemporaneous external cohort of ACDF cases.
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Affiliation(s)
- Akash A. Shah
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Sai K. Devana
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Changhee Lee
- Department of Artificial Intelligence, Chung-Ang University, Seoul, South Korea
| | - Thomas E. Olson
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Alexander Upfill-Brown
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - William L. Sheppard
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Elizabeth L. Lord
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Arya N. Shamie
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Mihaela van der Schaar
- Department of Electrical and Computer Engineering, University of California, Los Angeles, CA
- Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, United Kingdom
| | - Nelson F. SooHoo
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Don Y. Park
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
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Gupta P, Quan T, Abdo MG, Manzi JE, Knapp B, Shaffer G. Thirty-Day Morbidity and Mortality in Patients With COPD Following Open Reduction and Internal Fixation for Rotational Ankle Fractures. J Foot Ankle Surg 2022; 61:1275-1279. [PMID: 35501248 DOI: 10.1053/j.jfas.2022.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 03/02/2022] [Accepted: 03/29/2022] [Indexed: 02/03/2023]
Abstract
Prior orthopedic literature has found patients with chronic obstructive pulmonary disease (COPD) to be at an increased risk for postoperative morbidity and mortality. Thus, the purpose of this study is to identify whether there are any differences in risk for 30-day morbidity or mortality following ORIF for ankle fractures between adult patients with COPD and without COPD. Patients undergoing operative treatment for ankle fracture were identified in the National Surgical Quality Improvement Program database from 2006 to 2018. Patients were divided into 2 cohorts: non-COPD and COPD patients. In this analysis, demographics data, medical comorbidities, and thirty-day postoperative outcomes were analyzed between the 2 cohorts. Bivariate and multivariate analyses were performed. Of 10,346 total patients who underwent operative treatment for ankle fracture, 9986 patients (96.5%) did not have a history of COPD whereas 360 (3.5%) had COPD. Following adjustment to control for demographic and comorbidity data, relative to patients without COPD, those with COPD had an increased risk of pneumonia (odds ratio [OR] 4.601; p = .001), unplanned intubation (OR 3.085; p = .043), and hospital readmission (OR 1.828; p = .020). Patients with COPD did not have a statistically significant difference with regards to mortality (OR 2.729; p = .080). Adult patients with COPD are at an increased risk for pneumonia, unplanned intubation, and hospital readmission within 30 days following ORIF of ankle fractures compared to patients without COPD. Despite these risks, this is a relatively safe procedure for these patients and the presence of COPD alone should not serve as a barrier to surgery.
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Affiliation(s)
- Puneet Gupta
- Department of Orthopedic Surgery, George Washington University School of Medicine and Health Sciences, Washington, DC
| | - Theodore Quan
- Department of Orthopedic Surgery, George Washington University School of Medicine and Health Sciences, Washington, DC.
| | - Magid G Abdo
- Burrell College of Osteopathic Medicine, Las Cruces, NM
| | | | - Brock Knapp
- Department of Orthopedic Surgery, George Washington University School of Medicine and Health Sciences, Washington, DC
| | - Gene Shaffer
- Department of Orthopedic Surgery, Einstein Healthcare Network, Philadelphia, PA
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Tang Y, Kang L, Guo M, Fan L. Intertrochanteric Fracture Surgery Patients with Diabetes Mellitus are Prone to Suffer Perioperative Neurological and Endocrine/Metabolic Complications: A Propensity-Score Matched Analysis. Ther Clin Risk Manag 2022; 18:775-783. [PMID: 35967194 PMCID: PMC9365324 DOI: 10.2147/tcrm.s366846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 07/23/2022] [Indexed: 11/23/2022] Open
Abstract
Background In older adults, the recovery after hip fracture surgery is not always to be well expected due to high risks of adverse outcomes including perioperative complications and mortality. We aimed to evaluate the intertrochanteric fracture (IF) patients with diabetes mellitus (DM) and receiving surgical fixation with intramedullary nail on the perioperative complications, total hospital costs (THC), length of hospital stay (LOS), and mortality. Methods In this retrospective cohort study, among 487 consecutive intertrochanteric fracture patients with age over 65 years and treated surgically by using intramedullary nail between Jan. 2015 and Mar. 2020, 353 patients were included, including 81 with DM and 272 without DM. After using propensity-score matched (PSM) analysis, 80 patients remained in each group. The perioperative complications, 30-day, 90-day, 1-year, and 2-year survival rates, THC, and LOS were observed and compared between two groups. Overall survival was compared by Kaplan–Meier method. Results No significant between-group differences were found in 30-day, 90-day, 1-year, and 2-year mortality rates, THC, LOS, and other perioperative complications after PSM and McNemar’s tests (all p>0.05), except for neurological complications (p<0.004) and endocrine/metabolic complications (p<0.001). At a mean follow-up time of 36.2 months, there were no statistically significant differences between the groups based on the Kaplan–Meier survival curve (p=0.171, log-rank). Conclusion IF surgery patients with DM are more prone to suffer perioperative neurological and endocrine/metabolic complications and they should be managed individually while being aware of these risks henceforth. Further high evidence clinical trials are needed to expand in DM patients with IF.
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Affiliation(s)
- You Tang
- Department of Joint Surgery, Binzhou People’s Hospital, Binzhou, People’s Republic of China
- Correspondence: You Tang, Department of Joint Surgery, Binzhou People’s Hospital, Binzhou, People’s Republic of China, Email
| | - Le Kang
- Department of Hand Surgery & Microsurgery and Foot & Ankle Surgery, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, People’s Republic of China
| | - Meng Guo
- Department of Rehabilitation, Binzhou Medical University Hospital, Binzhou, People’s Republic of China
| | - Linlin Fan
- Department of Child Healthcare, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, People’s Republic of China
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Risk factors for postoperative pneumonia in patients undergoing hip fracture surgery: a systematic review and meta-analysis. BMC Musculoskelet Disord 2022; 23:553. [PMID: 35676675 PMCID: PMC9174025 DOI: 10.1186/s12891-022-05497-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 05/26/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Postoperative pneumonia (POP) is a devastating complication that can frequently occur after hip fracture surgery. This study aimed to quantitatively and comprehensively summarize the risk factors for POP following hip fracture surgery. METHODS PubMed, Embase, and Cochrane Library were systematically searched for studies assessing risk factors for POP following hip fracture surgery. The pooled odds ratio (OR) and standardized mean difference (SMD) between patients with and without POP were calculated. Evidence was assessed using the Newcastle-Ottawa scale. RESULTS Ten studies including 37,130 patients with hip fractures were selected. POP occurred in 1768 cases with an accumulated incidence of 7.8% (95% confidence interval [CI]: 0.061-0.094). Advanced age (SMD: 0.50, 95% CI: 0.10-0.90), male sex (OR: 1.50, 95% CI: 1.12-2.01), American Society of Anesthesiologists physical status scale ≥3 (OR: 3.17, 95% CI: 1.25-8.05), chronic obstructive pulmonary disease (OR: 2.05, 95% CI: 1.43-2.94), coronary heart disease (OR: 1.82, 95% CI: 1.27-2.60), arrhythmia (OR: 1.49, 95% CI: 1.04-2.15), congestive heart failure (OR: 1.41, 95% CI: 1.14-1.75), chronic kidney disease (OR: 2.09, 95% CI: 1.28-3.41), and cerebrovascular accident (OR: 2.14, 95% CI: 1.60-2.85) were risk factors for POP. Hemoglobin (SMD: -0.14, 95% CI: - 0.25 to - 0.03), albumin (SMD: -0.97, 95% CI: - 1.54--0.41), blood urea nitrogen (SMD: 0.20, 95% CI: 0.03-0.37), alanine aminotransferase (SMD: 0.27, 95% CI: 0.10-0.44), arterial oxygen pressure (SMD: -0.49, 95% CI: - 0.71--0.27), time from injury to surgery (SMD: 0.13, 95% CI: 0.08-0.17), and surgery within 48 h (OR: 3.74, 95% CI: 2.40-5.85) were associated with the development of POP. CONCLUSION Patients with the aforementioned risk factors should be identified preoperatively, and related prophylaxis strategies should be implemented to prevent POP following hip fracture surgery.
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Plantz MA, Wu SA, Gerlach EB, Arpey NC, Swiatek PR, Carney JJ, Tjong VK. Increased 30-Day Postoperative Readmission and Medical Complication Rates Among Patients 65 Years and Older Following Arthroscopic Rotator Cuff Repair. Arthrosc Sports Med Rehabil 2022; 4:e1151-e1159. [PMID: 35747632 PMCID: PMC9210468 DOI: 10.1016/j.asmr.2022.04.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 04/21/2022] [Indexed: 11/29/2022] Open
Abstract
Purpose Methods Results Conclusions
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Affiliation(s)
- Mark A. Plantz
- Address correspondence to Mark A. Plantz, B.S., 676 N. St. Clair. St., Suite 1300, Chicago, IL 60611, U.S.A.
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10
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Creagh-Brown BC. Prevention and Treatment of Postoperative Pulmonary Complications. Perioper Med (Lond) 2022. [DOI: 10.1016/b978-0-323-56724-4.00020-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Abola MV, Du JY, Lin CC, Schreiber-Stainthorp W, Passias PG. Symptomatic Epidural Hematoma After Elective Cervical Spine Surgery: Incidence, Timing, Risk Factors, and Associated Complications. Oper Neurosurg (Hagerstown) 2021; 21:452-460. [PMID: 34624885 DOI: 10.1093/ons/opab344] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 08/04/2021] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND As the rate of elective cervical spine surgery increases, studies of complications may improve quality of care. Symptomatic postoperative cervical epidural hematomas (PCEH) are rare but result in significant morbidity. Because of their low incidence, the risk factors and complications associated with symptomatic PCEH remain unclear. OBJECTIVE To clarify the prevalence, timing, variables, and complications associated with PCEH following elective cervical spine surgery. METHODS Using the American College of Surgeons National Surgical Quality Improvement Program database, cervical spine surgeries performed between 2012 and 2016 were identified using Current Procedural Terminology codes. Symptomatic PCEH was defined as readmission or reoperation events specifically associated with International Classification of Diseases code diagnoses of postoperative hematoma within 30 d of index surgery. Multivariate models were created to assess the independent association of symptomatic PCEH with other postoperative complications. RESULTS There were 53233 patients included for analysis. The overall incidence of symptomatic PCEH was 0.4% (n = 198). Reoperation occurred in 158 cases (78.8%), of which 2 required a second reoperation (1.3%). The majority (91.8%) of hematomas occurred within 15 d of surgery. Multivariate analysis identified male gender, American Society of Anesthesiologists classes 3 to 5, bleeding disorder, increasing number of operative levels, revision surgery, dural repair, and perioperative transfusion as independent factors associated with PCEH. Upon controlling for those confounders, PCEH was independently associated with cardiac arrest, stroke, deep vein thrombosis, surgical site infection, and pneumonia. CONCLUSION Postoperative epidural hematomas requiring readmission or reoperation following elective cervical spine surgery occurred at an incidence of 0.4%. Symptomatic PCEHs are associated with increased rates of numerous major morbidities.
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Affiliation(s)
- Matthew V Abola
- Department of Orthopedic Surgery, New York University Langone Orthopedic Hospital, NYU Langone Health, New York, New York, USA
| | - Jerry Y Du
- Department of Orthopedics, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - Charles C Lin
- Department of Orthopedic Surgery, New York University Langone Orthopedic Hospital, NYU Langone Health, New York, New York, USA
| | - William Schreiber-Stainthorp
- Department of Orthopedic Surgery, New York University Langone Orthopedic Hospital, NYU Langone Health, New York, New York, USA
| | - Peter G Passias
- Department of Orthopedic Surgery, New York University Langone Orthopedic Hospital, NYU Langone Health, New York, New York, USA
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Hur ES, Bohl DD, Della Valle CJ, Villalobos F, Gerlinger TL. Hypoalbuminemia Predicts Adverse Events following Unicompartmental Knee Arthroplasty. J Knee Surg 2021; 36:491-497. [PMID: 34768290 DOI: 10.1055/s-0041-1739146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Hypoalbuminemia is a potentially modifiable risk factor associated with adverse events following total knee arthroplasty. The present study aimed to evaluate whether hypoalbuminemia similarly predisposes to adverse events following unicompartmental knee arthroplasty (UKA). Patients who underwent UKA during 2006-2018 were identified through the American College of Surgeons National Surgical Quality Improvement Program. Only patients with preoperative serum albumin concentration were included. Outcomes were compared between patients with and without hypoalbuminemia (serum albumin concentration < 3.5 g/dL). All associations were adjusted for demographic, comorbidity, and laboratory differences between populations. A total of 11,342 patients were identified, of whom 6,049 (53.3%) had preoperative serum albumin laboratory values available for analysis. After adjustment for potential confounders, patients with hypoalbuminemia had a greater than 2-fold increased probability for occurrence of any complication (7.02% vs. 2.23%, p = 0.009) and a 4-fold increased probability of receiving a blood transfusion (1.81% vs. 0.25%, p = 0.045). Among procedures performed as inpatients, mean postoperative length of stay (LOS) was longer in patients with hypoalbuminemia (2.2 vs. 1.8 days; p = 0.031). Hypoalbuminemia is independently associated with complications and increased LOS following UKA and a marker for patients at higher risk of postoperative complications. Patients should be screened for hypoalbuminemia and nutritional deficiencies addressed prior to UKA.
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Affiliation(s)
- Edward S Hur
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois
| | - Daniel D Bohl
- Department of Orthopaedic Surgery, Baylor University Medical Center, Dallas, Texas
| | - Craig J Della Valle
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois
| | - Felipe Villalobos
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois
| | - Tad L Gerlinger
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois
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Wang KY, Suresh KV, Mo K, Harris AB, Marrache M, Kebaish KM. Preoperative Hyponatremia is an Independent Risk Factor for Prolonged Hospital Stay Following Anterior Cervical Discectomy and Fusion. World Neurosurg 2021; 161:e18-e24. [PMID: 34688933 DOI: 10.1016/j.wneu.2021.10.125] [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: 07/04/2021] [Revised: 10/14/2021] [Accepted: 10/15/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To determine the effects of preoperative hyponatremia on short-term postoperative complications and healthcare utilization (length of stay, readmissions) following anterior cervical fusion and discectomy (ACDF). METHODS Patients who underwent ACDF were identified in the American College of Surgeons National Surgical Quality Improvement Program (NSQIP) database. Patients who had revision surgery, trauma, vertebral malignancy, or infection were excluded. Eunatremia was defined as sodium (Na) level between 135 and 145 mEq/L, whereas hyponatremia was defined as Na < 135 mEq/L. Preoperatively hyponatremic patients were matched 1:1 with eunatremic patients using propensity-score matching based upon age, gender, American Society of Anesthesiology (ASA) score, and baseline comorbidities. Minor adverse events included superficial infection, dehiscence, urinary tract infection, pneumonia, and renal insufficiency or failure. Serious adverse events included deep wound infection, reintubation, pulmonary embolism, cerebrovascular accident, cardiac arrest, deep vein thrombosis, sepsis, return to operating room, and death within 30 days. Complications were analyzed using bivariate and logistic analysis with significance set at p<0.05. RESULTS Of the 9,094 patients undergoing ACDF, 3.64% (331 patients) were preoperatively hyponatremic. Preoperative hyponatremia was an independent risk factor for postoperative pneumonia following ACDF (OR=4.47; p=0.020) as well as extended length of hospital stay greater than one standard deviation above the mean (OR=1.71; p=0.042). Preoperative hyponatremia was an independent risk factor for having a serious adverse event (OR=2.40; p=0.005), as well as any adverse event (OR=2.44; p=0.009). CONCLUSION Preoperative hyponatremia is an independent risk factor for pneumonia and prolonged length of stay following ACDF.
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Affiliation(s)
- Kevin Y Wang
- Department of Orthopaedic Surgery, The Johns Hopkins University, Baltimore, MD
| | - Krishna V Suresh
- Department of Orthopaedic Surgery, The Johns Hopkins University, Baltimore, MD
| | - Kevin Mo
- Department of Orthopaedic Surgery, The Johns Hopkins University, Baltimore, MD
| | - Andrew B Harris
- Department of Orthopaedic Surgery, The Johns Hopkins University, Baltimore, MD
| | - Majd Marrache
- Department of Orthopaedic Surgery, The Johns Hopkins University, Baltimore, MD
| | - Khaled M Kebaish
- Department of Orthopaedic Surgery, The Johns Hopkins University, Baltimore, MD.
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14
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Mohamed B, Wang MC, Bisson EF, Dimar J, Harrop JS, Hoh DJ, Mummaneni PV, Dhall S. Congress of Neurological Surgeons Systematic Review and Evidence-Based Guidelines for Perioperative Spine: Preoperative Pulmonary Evaluation and Optimization. Neurosurgery 2021; 89:S33-S41. [PMID: 34490879 DOI: 10.1093/neuros/nyab319] [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: 06/28/2021] [Accepted: 07/02/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND There are no current recommendations for preoperative pulmonary evaluation and management of patients undergoing elective spine surgery. OBJECTIVE The aim of this guideline is to determine preoperative risk factors for perioperative and postoperative pulmonary adverse events and to determine the optimal preoperative evaluation and management of at-risk patients. METHODS A systematic review of the literature was performed using the National Library of Medicine PubMed database and the Cochrane Library for studies relevant to postoperative pulmonary adverse events in patients undergoing spine surgery. Clinical studies evaluating preoperative patient risk factors and preoperative diagnostic and treatment interventions were selected for review. RESULTS The literature search yielded 152 abstracts relevant to the PICO (patient/population, intervention, comparison, and outcomes) questions included in this chapter. The task force selected 65 articles for full-text review, and 24 were selected for inclusion in this systematic review. Twenty-three articles addressed preoperative patient risk factors. One article addressed preoperative diagnostic studies of pulmonary function. There were no studies meeting the inclusion criteria for preoperative pulmonary treatment. CONCLUSION There is substantial evidence for multiple preoperative patient factors that predict an increased risk of a postoperative pulmonary adverse event. Individuals with these risk factors (functional dependence, advanced age [≥65 yr], chronic obstructive pulmonary disease, congestive heart failure, weight loss, and obstructive sleep apnea) who are undergoing spine surgery should be counseled regarding the potential increased risk of a perioperative and postoperative pulmonary adverse events. There is insufficient evidence to support any specific preoperative diagnostic test for predicting the risk of postoperative pulmonary adverse events or any treatment intervention that reduces risk. It is suggested, however, to consider appropriate preoperative pulmonary diagnostic testing and treatment to address active pulmonary symptoms of existing or suspected disease.The full guidelines can be accessed at https://www.cns.org/guidelines/browse-guidelines-detail/5-preoperative-pulmonary-evaluation-optimization.
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Affiliation(s)
- Basma Mohamed
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Marjorie C Wang
- Department of Neurosurgery, Medical College of Wisconsin, Wauwatosa, Wisconsin, USA
| | - Erica F Bisson
- Clinical Neurosciences Center, University of Utah Health, Salt Lake City, Utah, USA
| | - John Dimar
- Department of Orthopedics, University of Louisville, Pediatric Orthopedics, Norton Children's Hospital, Norton Leatherman Spine Center, Louisville, Kentucky, USA
| | - James S Harrop
- Department of Neurological Surgery and Department of Orthopedic Surgery, Thomas Jefferson University, Division of Spine and Peripheral Nerve Surgery, Delaware Valley SCI Center, Philadelphia, Pennsylvania, USA
| | - Daniel J Hoh
- Department of Neurosurgery, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Praveen V Mummaneni
- Department of Neurosurgery, University of California San Francisco, San Francisco, California, USA
| | - Sanjay Dhall
- Department of Neurosurgery, University of California San Francisco, San Francisco, California, USA
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15
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Ally SA, Foy M, Sood A, Gonzalez M. Preoperative risk factors for postoperative pneumonia following primary Total Hip and Knee Arthroplasty. J Orthop 2021; 27:17-22. [PMID: 34456526 PMCID: PMC8379351 DOI: 10.1016/j.jor.2021.08.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 08/15/2021] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND The purpose of this study is to evaluate risk factors for pneumonia following THA and TKA. METHODS Patients were identified from the American College of Surgeons National Quality Improvement Database (NSQIP) who experienced postoperative pneumonia after undergoing primary THA and TKA. RESULTS Many characteristics including old age, anemia, diabetes, cardiac comorbidities, dialysis, and smoking were independent risk factors for postoperative pneumonia after THA or TKA. CONCLUSION This analysis offers new evidence on risk factors associated with the development of pneumonia after THA and TKA. These risk factors can help guide clinicians in preventing postoperative pneumonia after THA and TKA.
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Affiliation(s)
- Syeda Akila Ally
- Department of Orthopaedic Surgery, University of Illinois, 835 S. Wolcott Avenue, Chicago, IL, 60612, United States
| | - Michael Foy
- Department of Orthopaedic Surgery, University of Illinois, 835 S. Wolcott Avenue, Chicago, IL, 60612, United States
| | - Anshum Sood
- Department of Orthopaedic Surgery, University of Illinois, 835 S. Wolcott Avenue, Chicago, IL, 60612, United States
| | - Mark Gonzalez
- Department of Orthopaedic Surgery, University of Illinois, 835 S. Wolcott Avenue, Chicago, IL, 60612, United States
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16
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Early Major Complications After Radical Resection of Primary C2-Involved Upper Cervical Chordoma Through the Combined Anterior Retropharyngeal-Posterior Approach: Incidence and Risk Factors. World Neurosurg 2021; 154:e790-e796. [PMID: 34389526 DOI: 10.1016/j.wneu.2021.08.001] [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: 05/30/2021] [Revised: 08/01/2021] [Accepted: 08/02/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND We investigated the frequency of postoperative major complications, length of stay (LOS), and associated risk factors for primary C2-involved upper cervical chordoma through the combined anterior retropharyngeal-posterior approach. METHODS Clinical data were collected from 102 patients with primary C2-involved upper cervical chordoma treated at our institute from January 2016 to January 2021. Additionally, the Changzheng Hospital (CZH) surgical classification system was designed to describe the different anatomic types of C2 chordomas. A multivariate logistic regression analysis was performed and a multivariate Cox proportional hazards model was used to identify the risk factors associated with the occurrence of major complications and prolonged length of stay (LOS), respectively. RESULTS The incidence of major complication was 29.41% (30 of 102) in our cohort. A long surgical duration (P = 0.001), increased age (P = 0.001), more preoperative comorbidities (P = 0.008) and CZH types indicating extensive tumor involvement (P < 0.001) were identified as significant predictors of the occurrence of a major complication postoperatively. The mean LOS for the entire study population was 21.50 ± 0.64 days. The patients who experienced complications required a significant longer LOS (25.50 ± 1.26 days) than those without complications (19.83 ± 0.65; P < 0.001). The independent factors affecting LOS included age (P = 0.001), Frankel grade (P = 0.001), CZH classification (P < 0.001), and surgical duration (P = 0.001). CONCLUSIONS Patients who are older, experience longer operative duration, or have larger tumor extension have a greater risk of postoperative major complication. The LOS can be predicted by age, preoperative neurological deficit, CZH classification, surgical approach, and surgical duration. Accordingly, patients with these risk factors should be monitored and targeted with preventative measures.
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Morishita S, Yoshii T, Inose H, Hirai T, Yuasa M, Matsukura Y, Ogawa T, Fushimi K, Okawa A, Fujiwara T. Comparison of Perioperative Complications in Anterior Decompression With Fusion and Posterior Decompression With Fusion for Cervical Spondylotic Myelopathy: Propensity Score Matching Analysis Using a Nationwide Inpatient Database. Clin Spine Surg 2021; 34:E425-E431. [PMID: 34039894 DOI: 10.1097/bsd.0000000000001209] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 04/14/2021] [Indexed: 11/26/2022]
Abstract
STUDY DESIGN A retrospective cohort study with a national inpatient database. OBJECTIVE This study aimed to research the perioperative complication rates of cervical spondylotic myelopathy (CSM) patients who underwent anterior decompression with fusion (ADF) and posterior decompression with fusion (PDF) using a large national inpatient database and propensity score matching (PSM) analysis. SUMMARY OF BACKGROUND DATA There are several ways to successfully achieve surgical spinal decompression in CSM patients; however, evidence of the systemic complications and reoperation rates in ADF and PDF is lacking. MATERIALS AND METHODS We identified patients who were hospitalized for CSM and underwent either ADF or PDF from 2010 to 2016 using the Japanese Diagnosis Procedure Combination database. In the ADF and PDF groups, we compared postoperative complications (systemic and local), medical costs during hospitalization, and mortality before and after PSM. In addition, multivariate regression analysis was performed to identify risk factors for perioperative systemic complications. RESULTS A total of 1013 matched pairs were made after PSM. More perioperative systemic complications were detected in the ADF group than in the PDF group (at least 1 complication: ADF vs. PDF: 15.2% vs. 12.0%, P=0.038), especially for respiratory failure (1.4% vs. 0.4%, P=0.018), pneumonia (1.9% vs. 0.5%, P=0.004), and dysphagia (3.0% vs. 1.1%, P=0.003). The costs were ~$8000 higher (P<0.001) and the length of hospital stay was almost 5 days longer (P<0.001) in the PDF group. The risk factors for perioperative systemic complications in ADF were high age, low body mass index, and preoperative respiratory disease, and the factors in PDF were high body mass index and preoperative renal disease. CONCLUSION More systemic complications, especially respiratory events, were more frequently observed in the ADF group, while the medical costs were higher and the hospital stay was longer in the PDF group. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Takeo Fujiwara
- Global Health Promotion, Tokyo Medical and Dental University Graduate School of Medicine, Tokyo, Japan
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18
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Hospital use following anterior cervical discectomy and fusion. J Clin Neurosci 2021; 89:128-132. [PMID: 34119255 DOI: 10.1016/j.jocn.2021.03.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 02/24/2021] [Accepted: 03/09/2021] [Indexed: 11/21/2022]
Abstract
Most existing anterior cervical discectomy and fusion (ACDF) outcome studies omit emergency department (ED) use. To our knowledge, this study on ED use following ACDF surgery is the first to use a direct patient chart review and the first to include revision patients, 1-5 levels of ACDFs, and performance of corpectomy in the analysis. This study examines the frequency and basis of hospital service use within 30 days of ACDF surgery, specifically ED visits, hospital readmissions, and returns to the operating room. A retrospective chart review was performed for 1273 consecutive patients who underwent ACDF surgery at one institution from July 2013 to June 2016. Of the 1273 patients with ACDF, 97 (7.6%) presented to the ED within 30 days after surgery. Of 43 patients with revision ACDF, 9 (20.9%) returned to the ED, compared with 88 (7.2%) of 1230 patients with primary ACDF (P = 0.001). Of the 111 ED visits by 97 patients, 40 (36%) were for cervicalgia, 13 (12%) were for dysphagia, 8 (7%) were for trauma, 7 (6%) were for nausea, 4 (4%) were for medication refill, 3 (3%) were for dehiscence, 3 (3%) were for pneumonia, and 3 (3%) were for urinary tract infection. Of the ED presentations, 8 (7%) occurred during the first 2 days after surgery, and 46 (41%) occurred within the first postoperative week.
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Nassis E, Imas AS, Roth ES, Swiggett SJ, Ashraf AM, Diamond KB, Razi AE, Choueka J. A matched-control analysis on the effects of alcohol use disorder following primary reverse shoulder arthroplasty. J Orthop 2021; 24:186-189. [PMID: 33737792 DOI: 10.1016/j.jor.2021.02.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 02/14/2021] [Indexed: 10/22/2022] Open
Abstract
Introduction The purpose of this study was to determine whether alcohol use disorder (AUD) patients undergoing reverse shoulder arthroplasty (RSA) have increased: 1) lengths of stay (LOS); 2) complications; and 3) costs. Methods The study identified 19,168 patients in the study (n = 3198) and control (n = 15,970) cohort. In-hospital LOS, 90-day complications, and costs were assessed. Results AUD patients had significantly longer LOS (3- vs. 2-days, p < 0.0001), higher9 0-day medical complications (49.59 vs. 14.81%; p < 0.0001), and 90-day costs of care ($18,763.25 vs. $16,035.49, p < 0.0001). Conclusions The study is useful as it can allow healthcare professionals to adequately counsel these patients.
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Affiliation(s)
- Electra Nassis
- Maimonides Medical Center, Department of Orthopaedic Surgery, Brooklyn, NY, USA
| | - Alexander S Imas
- Maimonides Medical Center, Department of Orthopaedic Surgery, Brooklyn, NY, USA
| | - Eric S Roth
- Maimonides Medical Center, Department of Orthopaedic Surgery, Brooklyn, NY, USA
| | - Samuel J Swiggett
- Maimonides Medical Center, Department of Orthopaedic Surgery, Brooklyn, NY, USA
| | - Asad M Ashraf
- Maimonides Medical Center, Department of Orthopaedic Surgery, Brooklyn, NY, USA
| | - Keith B Diamond
- Maimonides Medical Center, Department of Orthopaedic Surgery, Brooklyn, NY, USA
| | - Afshin E Razi
- Maimonides Medical Center, Department of Orthopaedic Surgery, Brooklyn, NY, USA
| | - Jack Choueka
- Maimonides Medical Center, Department of Orthopaedic Surgery, Brooklyn, NY, USA
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Ohba T, Akaike H, Fujita K, Oda K, Tanaka N, Tomokazu M, Sakurai D, Haro H. Risk Factors and Assessment Using an Endoscopic Scoring System for Postoperative Respiratory Complications after Anterior Cervical Decompression and Fusion Surgery. Spine Surg Relat Res 2020; 5:10-15. [PMID: 33575489 PMCID: PMC7870322 DOI: 10.22603/ssrr.2020-0104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 06/17/2020] [Indexed: 11/16/2022] Open
Abstract
Introduction Postoperative respiratory complications (PRC) are one of the most serious complications. Potentially life-threatening accidents can occur after an anterior cervical discectomy and fusion (ADF), such as airway obstruction and aspiration pneumonia. Despite numerous studies, preoperative predictive and preventive methodology has yet to be established. As reported in our previous study, the evaluation of preoperative dysphagia using the eating assessment tool (EAT-10) and a flexible endoscopic evaluation of swallowing (FEES) is useful for predicting the incidence and risk factors of dysphagia after ADF. Methods This prospective study comprised 60 consecutive patients who underwent ADF. An otolaryngologist and a speech-language-hearing therapist preoperatively and 1 week postoperatively evaluated dysphagia using EAT-10 and Hyodo-Komagane (H-K) scores during FEES. Patient demographics, comorbidities, and pre- and postoperative dysphagia were compared between patients with and without PRC. Results Seven of 60 (11.6%) patients had preoperative dysphagia diagnosed using the H-K score. A significant positive correlation existed between the pre- and postoperative H-K scores. Of all 60 cases, eight (13.3%) had PRC. Among them, two required reintubation due to airway obstruction and six had aspiration pneumonia. The PRC(+) group was significantly older and more prone to diabetes and asthma. The preoperative H-K score of the PRC(+) group was significantly higher than that of the PRC(−) group. Postoperatively, but not preoperatively, EAT-10 was significantly higher in the PRC(+) group. Conclusions Preoperative dysphagia may potentially exacerbate postoperative dysphagia after ADF. A preoperative evaluation of dysphagia using the H-K score during FEES is a useful method for predicting and reducing the risk of PRC. Level of Evidence: 3
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Affiliation(s)
- Tetsuro Ohba
- Department of Orthopaedic Surgery, University of Yamanashi, Yamanashi, Japan
| | - Hiroshi Akaike
- Department of Rehabilitation, University of Yamanashi, Yamanashi, Japan
| | - Koji Fujita
- Department of Orthopaedic Surgery, University of Yamanashi, Yamanashi, Japan
| | - Kotaro Oda
- Department of Orthopaedic Surgery, University of Yamanashi, Yamanashi, Japan
| | - Nobuki Tanaka
- Department of Orthopaedic Surgery, University of Yamanashi, Yamanashi, Japan
| | - Matsuoka Tomokazu
- Department of Otorhinolaryngology, University of Yamanashi, Yamanashi, Japan
| | - Daiju Sakurai
- Department of Otorhinolaryngology, University of Yamanashi, Yamanashi, Japan
| | - Hirotaka Haro
- Department of Orthopaedic Surgery, University of Yamanashi, Yamanashi, Japan
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Comparison of Perioperative Complications in Anterior Decompression With Fusion and Posterior Decompression With Fusion for Cervical Ossification of the Posterior Longitudinal Ligament: Propensity Score Matching Analysis Using a Nation-Wide Inpatient Database. Spine (Phila Pa 1976) 2020; 45:E1006-E1012. [PMID: 32150133 DOI: 10.1097/brs.0000000000003469] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN A retrospective comparative study. OBJECTIVE To compare the perioperative complications and costs of anterior decompression with fusion (ADF) and posterior decompression with fusion (PDF) for patients with cervical ossification of the posterior longitudinal ligament (OPLL). SUMMARY OF BACKGROUND DATA Surgical treatment of cervical OPLL has a high risk of various complications. ADF and PDF are effective for the treatment of cervical OPLL; however, few studies have compared the two procedures in terms of the perioperative surgical complications. METHODS Patients undergoing ADF and PDF for cervical OPLL from 2010 to 2016 were identified in a nation-wide inpatient database. We investigated systemic and local complications, length of hospital stay, costs for hospitalization, reoperation, and mortality. Propensity score was calculated from patients' characteristics and preoperative comorbidities, and one to one matching was performed. RESULTS Propensity score-matching produced 854 pairs of patients who underwent ADF and PDF. The rate of at least one systemic complication was significantly higher in the ADF group (P = 0.004). The incidence rates of postoperative respiratory failure (P = 0.034) and dysphagia (P = 0.008) were significantly higher in the ADF group. The rates of pneumonia (P = 0.06) and hoarseness (P = 0.08) also tended to be higher in the ADF group. However, no difference was found in the mortality rate (P = 0.22). In the local complications, spinal fluid leakage was significantly higher in the ADF group (P < 0.001). However, blood transfusion rate was significantly higher in the PDF group (P = 0.001). Hospital stay was significantly longer in the PDF group (P < 0.001) and the cost for hospitalization was greater in the PDF group (P < 0.001). CONCLUSION The present study demonstrated that perioperative complications, such as respiratory failure, dysphagia, and spinal fluid leakage, were more common in the ADF group. However, hospital stay was longer in the PDF group, and the cost for hospitalization was greater in the PDF group. LEVEL OF EVIDENCE 3.
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Zhang D, Zhuo H, Yang G, Huang H, Li C, Wang X, Zhao S, Moliterno J, Zhang Y. Postoperative pneumonia after craniotomy: incidence, risk factors and prediction with a nomogram. J Hosp Infect 2020; 105:167-175. [DOI: 10.1016/j.jhin.2020.03.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 03/12/2020] [Indexed: 02/05/2023]
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Comparison of Perioperative Complications Between Anterior Decompression With Fusion and Laminoplasty For Cervical Spondylotic Myelopathy: Propensity Score-matching Analysis Using Japanese Diagnosis Procedure Combination Database. Clin Spine Surg 2020; 33:E101-E107. [PMID: 31414994 DOI: 10.1097/bsd.0000000000000864] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
STUDY DESIGN A retrospective comparative study with a large national database. OBJECTIVE The objective of this study was to compare the perioperative complications and costs of anterior decompression with fusion (ADF) and laminoplasty (LAMP) for patients who had cervical spondylotic myelopathy (CSM). SUMMARY OF BACKGROUND DATA CSM is the most common spinal cord disorder in the upper middle-aged people in Japan. ADF and LAMP represent 2 major treatments; however, few studies have reported large-scale investigations for perioperative complications with CSM. Thus, it is controversial which surgical approach will lead to the best clinical outcome in CSM. MATERIALS AND METHODS All data in this study were collected from the Japanese Diagnosis Procedure Combination database for patients diagnosed with CSM. We adjusted for known confounding biases with propensity score matching. One-to-one matched pairs between each surgical procedure were analyzed for the purposes of comparing systemic complication rates, local complication rates, medical costs, and mortality. RESULTS After propensity score matching, 1638 pairs of patients undergoing ADF and LAMP were made. More perioperative systemic complications were observed in the ADF group, such as atrial fibrillation (ADF/LAMP=0.7%/0.2%, P=0.032), respiratory failure (1.4%/0.1%, P<0.001), dysphagia (2.2%/0.2%, P<0.001), and sepsis (0.5%/0.1%, P=0.019). In contrast, a high rate of pulmonary embolism was observed with LAMP groups (ADF/LAMP=0%/0.2%, P=0.045). Local complications, such as infection (ADF/LAMP=0.8%/1.7%, P=0.026) and meningitis (0%/0.2%, P<0.045), were more common in the LAMP group. Conversely, spinal fluid leakage (ADF/LAMP=0.6%/0%, P=0.003) was more common in the ADF group. The costs (P<0.001) were higher in the ADF group. CONCLUSIONS More systemic complications, such as respiratory disease, cardiovascular events, and sepsis, were observed in the ADF group, although local infection was more frequently seen in the LAMP group. Medical costs were higher in the ADF group. The findings in this study will contribute to each CSM patient by allowing suitable adaptation of cervical surgeries. LEVEL OF EVIDENCE Level III.
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Utility of Preoperative Laboratory Testing in Assessing Risk of Adverse Outcomes After Anterior Cervical Discectomy and Fusion: Insights from National Surgical Registry. World Neurosurg 2020; 136:e398-e406. [DOI: 10.1016/j.wneu.2020.01.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 01/03/2020] [Accepted: 01/04/2020] [Indexed: 11/20/2022]
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Zhang HX, Shen Y, Chen J, Zhang L, Lin W. Risk Factors of Pulmonary Complications After Minimally Invasive Surgery for Elderly Patients with Vertebral Compression Fractures. Ther Clin Risk Manag 2020; 16:7-15. [PMID: 32021221 PMCID: PMC6970106 DOI: 10.2147/tcrm.s231383] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 12/20/2019] [Indexed: 11/29/2022] Open
Abstract
Purpose To determine the risk factors for pulmonary complications after minimally invasive surgery in elderly patients with vertebral compression fractures (VCFs). Methods A total of 233 elderly patients (age ≥ 65 years) with VCFs, who underwent percutaneous vertebroplasty (PVP) or percutaneous kyphoplasty (PKP) surgery at Hebei General Hospital from January 2011 to December 2016, were retrospectively analyzed. Risk factors and the effects of the model were determined by univariate logistic regression analyses and the receiver operating characteristic (ROC) curve, respectively. A risk assessment scale was established based on the risk factors, as well as physiological and surgical scores for mortality and morbidity. The risk assessment scale prospectively evaluated risk factors of pulmonary complications after minimally invasive surgery for elderly patients with VCFs from January to June 2017. Results 27 patients were diagnosed with pulmonary complications (27/233, 11.59%). There were statistically significant differences between patients with and without pulmonary complications in terms of age, body mass index (BMI), smoking, cardiovascular diseases and old fractures between patients with and without pulmonary complications (P < 0.05). Logistic regression analysis showed that smoking, cardiovascular diseases and old fractures were risk factors (P < 0.05) and area under the curve was 0.738 (95% confidence intervals (CI): 0.648–0.828). 53 elderly patients with VCFs were assessed, 5 of them occurred pulmonary complications. Areas under the curve of preoperative and total risk assessment values were all 0.925. Conclusion Significant risk factors of pulmonary complications were BMI, cardiovascular diseases and old fractures for patients aged 65 years or elderly with VCFs after minimally invasive surgery. The risk assessment scale gained high accuracy.
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Affiliation(s)
- Hua-Xing Zhang
- Department of Graduate School, Graduate School of Hebei Medical University, Shijiazhuang, Hebei 050000, People's Republic of China.,Department of Orthopedics, Hebei General Hospital, Shijiazhuang, Hebei 050000, People's Republic of China
| | - Yong Shen
- Department of Spine Surgery, The Third Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, People's Republic of China
| | - Jia Chen
- Department of Orthopedics, Hebei General Hospital, Shijiazhuang, Hebei 050000, People's Republic of China
| | - Long Zhang
- Department of Orthopedics, Hebei General Hospital, Shijiazhuang, Hebei 050000, People's Republic of China
| | - Wei Lin
- Department of Graduate School, Graduate School of Hebei Medical University, Shijiazhuang, Hebei 050000, People's Republic of China
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Jiang F, Wilson JRF, Badhiwala JH, Santaguida C, Weber MH, Wilson JR, Fehlings MG. Quality and Safety Improvement in Spine Surgery. Global Spine J 2020; 10:17S-28S. [PMID: 31934516 PMCID: PMC6947676 DOI: 10.1177/2192568219839699] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
STUDY DESIGN Review article. OBJECTIVES A narrative review of the literature on the current advances and limitations in quality and safety improvement initiatives in spine surgery. METHODS A comprehensive literature search was performed using Ovid MEDLINE focusing on 3 preidentified concepts: (1) quality and safety improvement, (2) reporting of outcomes and adverse events, and (3) prediction model and practice guidelines. The search was conducted under appropriate subject headings and using relevant text words. Articles were screened, and manuscripts relevant to this discussion were included in the narrative review. RESULTS Quality and safety improvement remains a major research focus attracting investigators from the global spine community. Multiple databases and registries have been developed for the purpose of generating data and monitoring the progress of quality and safety improvement initiatives. The development of various prediction models and clinical practice guidelines has helped shape the care of spine patients in the modern era. With the reported success of exemplary programs initiated by the Northwestern and Seattle Spine Team, other quality and safety improvement initiatives are anticipated to follow. However, despite these advancements, the reporting metrics for outcomes and adverse events remain heterogeneous in the literature. CONCLUSION Constant surveillance and continuous improvement of the quality and safety of spine treatments is imperative in modern health care. Although great advancement has been made, issues with reporting outcomes and adverse events persist, and improvement in this regard is certainly needed.
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Affiliation(s)
- Fan Jiang
- Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada,University of Toronto, Toronto, Ontario, Canada
| | - Jamie R. F. Wilson
- Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada,University of Toronto, Toronto, Ontario, Canada
| | - Jetan H. Badhiwala
- Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada,University of Toronto, Toronto, Ontario, Canada
| | | | | | - Jefferson R. Wilson
- University of Toronto, Toronto, Ontario, Canada,St Michael’s Hospital, Toronto, Ontario, Canada
| | - Michael G. Fehlings
- Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada,University of Toronto, Toronto, Ontario, Canada,Michael G. Fehlings, Division of Neurosurgery, Toronto Western Hospital, University of Toronto, 399 Bathurst Street, Toronto, Ontario, M5T2S8, Canada.
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30-day Mortality Following Surgery for Spinal Epidural Abscess: Incidence, Risk Factors, Predictive Algorithm, and Associated Complications. Spine (Phila Pa 1976) 2019; 44:E500-E509. [PMID: 30234819 DOI: 10.1097/brs.0000000000002875] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Retrospective case-control study. OBJECTIVE To determine incidence and timing of mortality following surgery for spinal epidural abscess (SEA), identify risk factors for mortality, and identify complications associated with mortality. SUMMARY OF BACKGROUND DATA SEA is a serious condition with potentially devastating sequelae. There is a paucity of literature characterizing mortality following surgery for SEA. METHODS The National Surgical Quality Improvement Program (NSQIP) database was used. Patients with a diagnosis of SEA were included. A Cox proportional hazards model identified independent risk factors for 30-day mortality. A predictive model for mortality was created. Multivariate models identified postoperative complications associated with mortality. RESULTS There were 1094 patients included, with 40 cases of mortality (3.7%), the majority of which occurred within 2 weeks postoperatively (70%). Independent risk factors for 30-day mortality were age>60 years (hazard ratio [HR]: 2.147, P = 0.027), diabetes (HR: 2.242, P = 0.015), respiratory comorbidities (HR: 2.416, P = 0.037), renal comorbidities (HR: 2.556, P = 0.022), disseminated cancer (HR: 5.219, P = 0.001), and preoperative thrombocytopenia (HR: 3.276, P = 0.001). A predictive algorithm predicts a 0.3% mortality for zero risk factors up to 37.5% for 4 or more risk factors. A ROC area under curve (AUC) was 0.761, signifying a fair predictor (95% CI: 0.683-0.839, P < 0.001). Cardiac arrest (adjusted odds ratio [aOR]: 72.240, 95% confidence interval [CI]: 27.8-187.721, P < 0.001), septic shock (aOR: 15.382, 95% CI: 7.604-31.115, P < 0.001), and pneumonia (aOR: 2.84, 95% CI: 1.109-7.275, P = 0.03) were independently associated with mortality. CONCLUSION The 30-day mortality rate following surgery for SEA was 3.7%. Of the mortalities that occurred within 30 days of surgery, the majority occurred within 2 weeks. Independent risk factors for mortality included older age, diabetes, hypertension, respiratory comorbidities, renal comorbidities, metastatic cancer, and thrombocytopenia. Risk for mortality ranged from 0.3% to 37.5% based on number of risk factors. Septic shock, cardiac arrest, and pneumonia were associated with mortality. LEVEL OF EVIDENCE 3.
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Morishita S, Yoshii T, Okawa A, Fushimi K, Fujiwara T. Perioperative complications of anterior decompression with fusion versus laminoplasty for the treatment of cervical ossification of the posterior longitudinal ligament: propensity score matching analysis using a nation-wide inpatient database. Spine J 2019; 19:610-616. [PMID: 30914129 DOI: 10.1016/j.spinee.2018.10.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 10/23/2018] [Accepted: 10/23/2018] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Surgical treatment of cervical ossification of the posterior longitudinal ligament (OPLL) has a high risk of various complications. Anterior decompression with fusion (ADF) and laminoplasty (LAMP) are the most representative surgical procedures. However, few studies have compared the two procedures in terms of perioperative surgical complications. PURPOSE To compare the perioperative complications post-ADF and LAMP for cervical OPLL using a large national inpatient database. STUDY DESIGN A retrospective cohort study with propensity score matching analysis. PATIENT SAMPLE Overall, 8,718 (ADF/LAMP:1,333/7,485) patients who underwent surgery for cervical OPLL from April 1, 2010 to March 31, 2016 in hospitals using the diagnosis procedure combination were analyzed. OUTCOME MEASURES The occurrence of postoperative complications during hospitalization. METHODS We compared the perioperative systemic and local complications, reoperation rates, and costs between ADF and LAMP using propensity score matching analysis. RESULTS One-to-one matching resulted in 1,192 pairs of patients who underwent ADF and LAMP. The postoperative cardiovascular event rate was significantly higher (ADF/LAMP=1.9/0.8%, p=.013) in the ADF group. The incidence rates of dysphagia (similarly, 2.4/0.2%, p<.001), pneumonia (1.0/0.3%, p=.045), and spinal fluid leakage (2.4/0.4%, p<.001) were also higher in the ADF group, even after matching. The costs were also higher in the ADF group. However, surgical site infection (2.0/3.4%, p=.033) was significantly lower in the ADF group. No significant difference in the reoperation rates was found between the groups. CONCLUSION The present study, using a large nationwide database, demonstrated that perioperative complications were more common in the ADF group, but that surgical site infection (SSI) was more frequently observed in the LAMP group.
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Affiliation(s)
- Shingo Morishita
- Department of Orthopedic Surgery, Tokyo Medical and Dental University Graduate School of Medicine, Tokyo, Japan
| | - Toshitaka Yoshii
- Department of Orthopedic Surgery, Tokyo Medical and Dental University Graduate School of Medicine, Tokyo, Japan.
| | - Atsushi Okawa
- Department of Orthopedic Surgery, Tokyo Medical and Dental University Graduate School of Medicine, Tokyo, Japan
| | - Kiyohide Fushimi
- Department of Health Policy and Informatics, Tokyo Medical and Dental University Graduate School of Medicine, Tokyo, Japan
| | - Takeo Fujiwara
- Department of Global Health Promotion, Tokyo Medical and Dental University Graduate School of Medicine, Tokyo, Japan
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Ye I, Tang R, White SJ, Cheung ZB, Cho SK. Predictors of 30-Day Postoperative Pulmonary Complications After Open Reduction and Internal Fixation of Vertebral Fractures. World Neurosurg 2018; 123:e288-e293. [PMID: 30496929 DOI: 10.1016/j.wneu.2018.11.153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Accepted: 11/18/2018] [Indexed: 01/16/2023]
Abstract
OBJECTIVE The purpose of this study was to identify predictors of 30-day postoperative pulmonary complications after open reduction and internal fixation (ORIF) of vertebral fractures. METHODS We performed a retrospective study using the American College of Surgeons National Surgical Quality Improvement Program database from 2010 to 2014. Adult patients who underwent ORIF of vertebral fractures were included and divided into 2 groups based on the occurrence of 30-day postoperative pulmonary complications. Baseline patient and operative characteristics were compared between the 2 groups. Multivariate regression (MVR) analysis was performed to identify independent risk factors for pulmonary complications. RESULTS A total of 900 patients were included in our cohort. The overall 30-day pulmonary complication rate was 5.67%. Patients who had a pulmonary complication after vertebral ORIF were more often men and more often had diabetes, functional dependence, American Society of Anesthesiologists score classification of 3 or higher, pulmonary comorbidity, renal comorbidity, and preoperative anemia. The pulmonary complication group also had a higher incidence of 30-day mortality, prolonged hospitalization, pneumonia, cardiac complications, urinary tract infection, blood transfusion, and sepsis. The MVR analysis found that pulmonary comorbidity (odds ratio [OR], 5.3; 95% confidence interval [CI], 2.5-11.5; P < 0.001), diabetes (OR, 2.1; 95% CI, 1.0-4.2; P = 0.037), partial or dependent functional status (OR, 4.7; 95% CI, 2.2-10.2; P < 0.001), and cervical spine involvement (OR, 3.6; 95% CI, 1.7-8.0; P = 0.001) were independent predictors of pulmonary complications. CONCLUSIONS Early identification of risk factors for postoperative pulmonary complications is important in the evaluation of patients with vertebral fractures for surgical decision-making, preoperative optimization, and subsequent postoperative care to improve patient outcomes and minimize morbidity.
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Affiliation(s)
- Ivan Ye
- Department of Orthopaedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Ray Tang
- Department of Orthopaedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Samuel J White
- Department of Orthopaedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Zoe B Cheung
- Department of Orthopaedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Samuel K Cho
- Department of Orthopaedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
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Oni P, Schultheiß R, Scheufler KM, Roberg J, Harati A. Radiological and Clinical Outcome after Multilevel Anterior Cervical Discectomy and/or Corpectomy and Fixation. J Clin Med 2018; 7:jcm7120469. [PMID: 30477083 PMCID: PMC6306941 DOI: 10.3390/jcm7120469] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 11/18/2018] [Accepted: 11/21/2018] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Multilevel anterior cervical decompression and fixation of four and more levels is a common surgical procedure used for several diseases. METHODS We reviewed the radiological and clinical outcomes after anterior cervical discectomy or corpectomy and fixation of four and more levels in 85 patients (55 men and 30 women) with an average age of 59.6 years. Surgical indication was multilevel cervical degenerative myelopathy and radiculopathy in 72 (85%) patients, multilevel cervical spondylodiscitis in four (5%), complex traumatic cervical fractures in four (5%), metastatic cervical spine tumor in two (2%), and ossification of the posterior longitudinal ligament in three (3%) patients. RESULTS There were no severe intraoperative complications such as spinal cord or vertebral artery injury or dissection. Seventy-three patients had four, 10 patients had five, and two patients had six anterior cervical level fixations. The visual analog scale (VAS) and Japanese Orthopedic Association (mJOA) scale scores improved (6.9 to 1.3 (p < 0.001) and 13.9 to 16.5 (p < 0.001), respectively). The Cobb angle increased from 5.7° to 17.6° postoperatively (p < 0.001). Secondary posterior fixation was necessary in three cases due to pseudarthrosis. CONCLUSION The anterior approach appears to be optimal for ventral compressive pathology and lordosis restoration to the cervical spine. Limitations of multiple level decompression and fixation included increasing pseudoarthrosis rates, especially after corpectomy, and increasing fused level numbers.
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Affiliation(s)
- Paul Oni
- Department of Neurosurgery, Klinikum Dortmund, 44145 Dortmund, Germany.
| | - Rolf Schultheiß
- Department of Neurosurgery, Klinikum Dortmund, 44145 Dortmund, Germany.
| | | | - Jakob Roberg
- Department of Neurosurgery, Klinikum Dortmund, 44145 Dortmund, Germany.
| | - Ali Harati
- Department of Neurosurgery, Klinikum Dortmund, 44145 Dortmund, Germany.
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Abstract
STUDY DESIGN Retrospective cohort. OBJECTIVE To assess differences in baseline characteristics between sexes of patients undergoing anterior cervical discectomy and fusion (ACDF) and risk factors for adverse outcomes according to sex. SUMMARY OF BACKGROUND DATA ACDF is a common treatment for cervical spine disease. To reduce the rate of complications, risk factors associated with adverse events have been identified. However, few studies have examined the risk for inferior outcomes or complications after ACDF by sex. METHODS The American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) database was used to identify patients who underwent ACDF from 2005 through 2014. Data collected included demographics, comorbidities, operative characteristics, and postoperative adverse events. Demographic and comorbidity variables were compared between men and women using chi-squared analysis. Perioperative outcomes were compared between groups using multivariate linear regression or Poisson regression with robust error variance controlling for preoperative characteristics. RESULTS In the 20,383 patients who met inclusion criteria, the male cohort was slightly older, less likely to be normal weight or morbidly obese, and had a higher incidence of diabetes and hypertension (P < 0.001 for each). Male sex was associated with a greater risk of any adverse event (relative risk = 1.2; P = 0.043), as well as any severe adverse event (relative risk = 1.4; P = 0.001). Moreover, male sex exhibited longer operative times compared to the female group (127 vs. 117 min; β = 10; P < 0.001). CONCLUSION The results of the current study suggest male sex is associated with an increased risk of adverse events following ACDF. Male sex has previously been demonstrated to correlate with medical comorbidities, which may be partly responsible for the increased morbidity. Because of the contrasting evidence throughout the literature, further studies are required to better elucidate this effect. LEVEL OF EVIDENCE 3.
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Elsamadicy AA, Sergesketter AR, Kemeny H, Adogwa O, Tarnasky A, Charalambous L, Lubkin DE, Davison MA, Cheng J, Bagley CA, Karikari IO. Impact of Chronic Obstructive Pulmonary Disease on Postoperative Complication Rates, Ambulation, and Length of Hospital Stay After Elective Spinal Fusion (≥3 Levels) in Elderly Spine Deformity Patients. World Neurosurg 2018; 116:e1122-e1128. [DOI: 10.1016/j.wneu.2018.05.185] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 05/24/2018] [Accepted: 05/25/2018] [Indexed: 12/22/2022]
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Impact of Operative Time on Adverse Events Following Primary Total Joint Arthroplasty. J Arthroplasty 2018; 33:2256-2262.e4. [PMID: 29551302 DOI: 10.1016/j.arth.2018.02.037] [Citation(s) in RCA: 127] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 01/29/2018] [Accepted: 02/07/2018] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Little is known regarding the impact of operative time on adverse events following arthroplasty. The present study tests for associations between a 15-minute increase in operative time and the occurrence of adverse events following primary total joint arthroplasty. METHODS Patients undergoing primary total hip or knee arthroplasty during 2006-2013 were identified in the American College of Surgeons National Surgical Quality Improvement Program. Operative time (as a continuous variable) was tested for association with perioperative outcomes using multivariate regression. All regressions were adjusted for differences in demographic, comorbidity, and procedural characteristics. RESULTS A total of 165,474 patients met inclusion criteria. The mean (±standard deviation) operative time was 91.9 ± 32.5 minutes. Following adjustment for baseline characteristics, an increase in operative time by 15 minutes increased the risk of anemia requiring transfusion by 9% (95% confidence interval [CI] = 8%-10%, P < .001), wound dehiscence by 13% (95% CI = 8%-19%, P < .001), renal insufficiency by 9% (95% CI = 3%-14%, P < .001), sepsis by 10% (95% CI = 6%-14%, P < .001), surgical site infection by 9% (95% CI = 7%-12%, P < .001), and urinary tract infection by 4% (95% CI = 2%-6%, P < .001). Similarly, an increase in operative time by 15 minutes increased the risk of hospital readmission by 5% (95% CI = 4%-6%, P < .001) and of extended hospital length of stay (≥4 days) by 9% (95% CI = 8%-10%, P < .001). CONCLUSION The present study suggests that greater operative time increases the risk for multiple postoperative complications following total joint arthroplasty. These data suggest that surgeons should consider steps to minimize operative time without compromising the technical components of the surgical procedure.
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Passias PG, Poorman GW, Delsole E, Zhou PL, Horn SR, Jalai CM, Vira S, Diebo B, Lafage V. Adverse Outcomes and Prediction of Cardiopulmonary Complications in Elective Spine Surgery. Global Spine J 2018; 8:218-223. [PMID: 29796368 PMCID: PMC5958483 DOI: 10.1177/2192568217718817] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
STUDY DESIGN Retrospective cohort study. OBJECTIVES The purpose of this study was to report incidence of cardiopulmonary complications in elective spine surgery, demographic and surgical predictors, and outcomes. Understanding the risks and predictors of these sentinel events is important for risk evaluation, allocation of hospital resources, and counseling patients. METHODS A retrospective review of the National Surgical Quality Improvement Program (NSQIP) was performed on 60 964 patients undergoing elective spine surgery (any region; laminectomy, arthrodesis, discectomy, or laminoplasty) between 2011 and 2013. Incidence of myocardial infarction, cardiac arrest, unplanned reintubation, on ventilator >48 hours, perioperative pneumonia, and pulmonary embolism was measured. Demographic and surgical predictors of cardiopulmonary complications and associated outcomes (length of stay, discharge disposition, and mortality) were measured using binary logistic regression controlling for confounders. RESULTS Incidence rates per 1000 elective spine patients were 2.1 myocardial infarctions, 1.3 cardiac arrests, 4.3 unplanned intubations, 3.5 on ventilator >48 hours, 6.1 perioperative pneumonia, and 3.7 pulmonary embolisms. In analysis of procedure, diagnosis, and approach risk factors, thoracic cavity (odds ratio = 2.47; confidence interval = 1.95-3.12), scoliosis diagnosis, and combined approach (odds ratio = 1.51; confidence interval = 1.15-1.96) independently added the most risk for cardiopulmonary complication. Cardiac arrest had the highest mortality rate (34.57%). Being on ventilator greater than 48 hours resulted in the greatest increase to length of stay (17.58 days). CONCLUSIONS Expected risk factors seen in the Revised Cardiac Risk Index were applicable in the context of spine surgery. Surgical planning should take into account patients who are at higher risk for cardiopulmonary complications and the implications they have on patient outcome.
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Affiliation(s)
- Peter G. Passias
- NYU Medical Center-Hospital for Joint
Diseases, New York, NY, USA
| | | | - Edward Delsole
- NYU Medical Center-Hospital for Joint
Diseases, New York, NY, USA
| | - Peter L. Zhou
- NYU Medical Center-Hospital for Joint
Diseases, New York, NY, USA
| | - Samantha R. Horn
- NYU Medical Center-Hospital for Joint
Diseases, New York, NY, USA
| | - Cyrus M. Jalai
- NYU Medical Center-Hospital for Joint
Diseases, New York, NY, USA
| | - Shaleen Vira
- NYU Medical Center-Hospital for Joint
Diseases, New York, NY, USA
| | - Bassel Diebo
- SUNY Downstate Medical Center, Brooklyn, NY,
USA
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Incidence, Risk Factors, and Clinical Implications of Pneumonia After Surgery for Geriatric Hip Fracture. J Arthroplasty 2018; 33:1552-1556.e1. [PMID: 29289445 DOI: 10.1016/j.arth.2017.11.068] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 11/25/2017] [Accepted: 11/29/2017] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Little is known regarding the occurrence of pneumonia after hip fracture surgery. The purpose of this study is to determine the incidence, risk factors, and clinical implications of pneumonia after surgery for geriatric hip fracture. METHODS The American College of Surgeons National Surgical Quality Improvement Program was used to retrospectively study geriatric patients undergoing surgery for hip fracture during 2006-2014. Independent risk factors for developing pneumonia within 30 days of surgery were identified using multivariate regression. RESULTS Of the 29,377 patients meeting inclusion criteria, 13,736 (46.8%) underwent hemiarthroplasty, 9468 (32.2%) intramedullary fixation, 4294 (14.6%) plate and/or screw fixation, 1299 (4.4%) total joint arthroplasty, and 580 (2.0%) percutaneous fixation. In total 1191 patients developed pneumonia, an incidence of 4.1%. The strongest risk factors for pneumonia were male sex, older age (especially ≥90 years), low body mass index, and chronic obstructive pulmonary disease. Patients who developed pneumonia had a higher readmission rate (79.1% vs 8.2%, P < .001), a higher rate of sepsis (16.6% vs 1.7%, P < .001), and a higher mortality rate (29.2% vs 5.7%, P < .001). Among 1602 total mortalities, 348 (17.9%) occurred in patients with pneumonia. CONCLUSION Pneumonia is a serious complication after geriatric hip fracture surgery, which increases the readmission and mortality risks. Evidence-based pneumonia prevention programs should be implemented among high-risk patients-males, patients ≥90 years, body mass index <18.5 kg/m2, and/or patients with chronic obstructive pulmonary disease-to decrease morbidity and mortality.
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Incidence, Risk Factors, and Clinical Implications of Pneumonia Following Total Hip and Knee Arthroplasty. J Arthroplasty 2017; 32:1991-1995.e1. [PMID: 28161137 DOI: 10.1016/j.arth.2017.01.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/11/2016] [Accepted: 01/06/2017] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND The purpose of this study is to determine the incidence, risk factors, and clinical implications of pneumonia following total joint arthroplasty (TJA). METHODS The American College of Surgeons National Surgical Quality Improvement Program was used to conduct a retrospective cohort study of patients undergoing TJA. Independent risk factors for the development of pneumonia within 30 days of TJA were identified using multivariate regression. Mortality and readmission rates were compared between patients who did and did not develop pneumonia. Multivariate regression was used to adjust for all demographic, comorbidity, and procedural characteristics. RESULTS In total, 171,200 patients met inclusion criteria, of whom 66,493 (38.8%) underwent THA and 104,707 (61.2%) underwent TKA. Of the 171,200 patients, 590 developed pneumonia, yielding a rate of 0.34% (95% confidence interval = 0.32%-0.37%). Independent risk factors for pneumonia were chronic obstructive pulmonary disease, diabetes mellitus, greater age (most notably ≥80 years), dyspnea on exertion, dependent functional status, lower body mass index, hypertension, current smoker status, and male sex. The subset of patients who developed pneumonia following discharge had a higher readmission rate (82.1% vs 3.4%, adjusted relative risk [RR] = 16.6, P < .001) and a higher mortality rate (3.7% vs 0.1%, adjusted RR = 19.4, P < .001). Among 124 total mortalities, 22 (17.7%) occurred in patients who had developed pneumonia. CONCLUSION Pneumonia is a serious complication following TJA that occurs in approximately 1 in 300 patients. Approximately 4 in 5 patients who develop pneumonia are subsequently readmitted, and approximately 1 in 25 die. Given the serious implications of this complication, evidence-based pneumonia prevention programs including oral hygiene with chlorhexidine, sitting upright for meals, elevation of the head of the bed to at least 30°, aggressive incentive spirometry, and early ambulation should be considered for patients at greatest risk.
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Chughtai M, Gwam CU, Mohamed N, Khlopas A, Newman JM, Khan R, Nadhim A, Shaffiy S, Mont MA. The Epidemiology and Risk Factors for Postoperative Pneumonia. J Clin Med Res 2017; 9:466-475. [PMID: 28496546 PMCID: PMC5412519 DOI: 10.14740/jocmr3002w] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/21/2017] [Indexed: 12/19/2022] Open
Abstract
Postoperative pneumonia is a common complication of surgery, and is associated with marked morbidity and mortality. Despite advances in surgical and anesthetic technique, it persists as a frequent postoperative complication. Many studies have aimed to assess its burden, as well as associated risk factors. However, this complication varies among the different surgical specialties, and there is a paucity of reports that comprehensively evaluate this complication. Therefore, the purpose of this study was to review the epidemiology and risk factors of postoperative pneumonia in the setting of: 1) general surgery; 2) cardiothoracic surgery; 3) orthopedic and spine surgery; and 4) head and neck surgery.
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Affiliation(s)
- Morad Chughtai
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, OH, USA
| | - Chukwuweike U Gwam
- Rubin Institute for Advanced Orthopaedics, Sinai Hospital of Baltimore, Baltimore, MD, USA
| | - Nequesha Mohamed
- Rubin Institute for Advanced Orthopaedics, Sinai Hospital of Baltimore, Baltimore, MD, USA
| | - Anton Khlopas
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, OH, USA
| | - Jared M Newman
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, OH, USA
| | - Rafay Khan
- Raritan Bay Medical Center, Perth Amboy, NJ, USA
| | - Ali Nadhim
- Raritan Bay Medical Center, Perth Amboy, NJ, USA
| | - Shervin Shaffiy
- St. Georges University School of Medicine, True Blue, Grenada, West Indies
| | - Michael A Mont
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, OH, USA
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Bhashyam N, De la Garza Ramos R, Nakhla J, Nasser R, Jada A, Purvis TE, Sciubba DM, Kinon MD, Yassari R. Thirty-day readmission and reoperation rates after single-level anterior cervical discectomy and fusion versus those after cervical disc replacement. Neurosurg Focus 2017; 42:E6. [PMID: 28142261 DOI: 10.3171/2016.11.focus16407] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
OBJECTIVE The goal of this study was to compare 30-day readmission and reoperation rates after single-level anterior cervical discectomy and fusion (ACDF) versus those after cervical disc replacement (CDR). METHODS The authors used the 2013-2014 American College of Surgeons National Surgical Quality Improvement Program database. Included were adult patients who underwent first-time single-level ACDF or CDR for cervical spondylosis or disc herniation. Primary outcome measures were readmission and/or reoperation within 30 days of the original surgery. Logistic regression analysis was used to assess the independent effect of the procedure (ACDF or CDR) on outcome, and results are presented as odds ratios with 95% confidence intervals. RESULTS A total of 6077 patients met the inclusion criteria; 5590 (92.0%) patients underwent single-level ACDF, and 487 (8.0%) patients underwent CDR. The readmission rates were 2.6% for ACDF and 0.4% for CDR (p = 0.003). When stratified according to age groups, only patients between the ages of 41 and 60 years who underwent ACDF had a significantly higher readmission rate than those who underwent CDR (2.5% vs 0.7%, respectively; p = 0.028). After controlling for patient age, sex, body mass index, smoking status, history of chronic obstructive pulmonary disease (COPD), diabetes, hypertension, steroid use, and American Society of Anesthesiologists (ASA) class, patients who underwent CDR were significantly less likely to undergo readmission within 30 days than patients who underwent ACDF (OR 0.23 [95% CI 0.06-0.95]; p = 0.041). Patients with a history of COPD (OR 1.97 [95% CI 1.08-3.57]; p = 0.026) or hypertension (OR 1.62 [95% CI 1.10-2.38]; p = 0.013) and those at ASA Class IV (OR 14.6 [95% CI 1.69-125.75]; p = 0.015) were significantly more likely to require readmission within 30 days. The reoperation rates were 1.2% for ACDF and 0.4% for CDR (p = 0.086), and multivariate analysis revealed that CDR was not associated with lower odds of reoperation (OR 0.60 [95% CI 0.14-2.55]; p = 0.492). However, increasing age was associated with a higher risk (OR 1.02 [95% CI 1.00-1.05]; p = 0.031) of reoperation; a 2% increase in risk per year of age was found. CONCLUSIONS Patients who underwent single-level ACDF had a higher readmission rate than those who underwent single-level CDR in this study. When stratified according to age, this effect was seen only in the 41- to 60-year age group. No significant difference in the 30-day single-level ACDF and single-level CDR reoperation rates was found. Although patients in the ACDF group were older and sicker, other unmeasured covariates might have accounted for the increased rate of readmission in this group, and further investigation is encouraged.
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Affiliation(s)
- Niketh Bhashyam
- Department of Neurological Surgery and.,Spine Research Laboratory, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York and
| | - Rafael De la Garza Ramos
- Department of Neurological Surgery and.,Spine Research Laboratory, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York and
| | - Jonathan Nakhla
- Department of Neurological Surgery and.,Spine Research Laboratory, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York and
| | - Rani Nasser
- Department of Neurological Surgery and.,Spine Research Laboratory, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York and
| | - Ajit Jada
- Department of Neurological Surgery and.,Spine Research Laboratory, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York and
| | - Taylor E Purvis
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Daniel M Sciubba
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Merritt D Kinon
- Department of Neurological Surgery and.,Spine Research Laboratory, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York and
| | - Reza Yassari
- Department of Neurological Surgery and.,Spine Research Laboratory, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York and
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Predicting the post-operative length of stay for the orthopaedic trauma patient. INTERNATIONAL ORTHOPAEDICS 2017; 41:859-868. [DOI: 10.1007/s00264-017-3425-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 02/05/2017] [Indexed: 11/28/2022]
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