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Tadayon Najafabadi B, Rayner DG, Shokraee K, Shokraie K, Panahi P, Rastgou P, Seirafianpour F, Momeni Landi F, Alinia P, Parnianfard N, Hemmati N, Banivaheb B, Radmanesh R, Alvand S, Shahbazi P, Dehghanbanadaki H, Shaker E, Same K, Mohammadi E, Malik A, Srivastava A, Nejat P, Tamara A, Chi Y, Yuan Y, Hajizadeh N, Chan C, Zhen J, Tahapary D, Anderson L, Apatu E, Schoonees A, Naude CE, Thabane L, Foroutan F. Obesity as an independent risk factor for COVID-19 severity and mortality. Cochrane Database Syst Rev 2023; 5:CD015201. [PMID: 37222292 PMCID: PMC10207996 DOI: 10.1002/14651858.cd015201] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
BACKGROUND Since December 2019, the world has struggled with the COVID-19 pandemic. Even after the introduction of various vaccines, this disease still takes a considerable toll. In order to improve the optimal allocation of resources and communication of prognosis, healthcare providers and patients need an accurate understanding of factors (such as obesity) that are associated with a higher risk of adverse outcomes from the COVID-19 infection. OBJECTIVES To evaluate obesity as an independent prognostic factor for COVID-19 severity and mortality among adult patients in whom infection with the COVID-19 virus is confirmed. SEARCH METHODS MEDLINE, Embase, two COVID-19 reference collections, and four Chinese biomedical databases were searched up to April 2021. SELECTION CRITERIA We included case-control, case-series, prospective and retrospective cohort studies, and secondary analyses of randomised controlled trials if they evaluated associations between obesity and COVID-19 adverse outcomes including mortality, mechanical ventilation, intensive care unit (ICU) admission, hospitalisation, severe COVID, and COVID pneumonia. Given our interest in ascertaining the independent association between obesity and these outcomes, we selected studies that adjusted for at least one factor other than obesity. Studies were evaluated for inclusion by two independent reviewers working in duplicate. DATA COLLECTION AND ANALYSIS: Using standardised data extraction forms, we extracted relevant information from the included studies. When appropriate, we pooled the estimates of association across studies with the use of random-effects meta-analyses. The Quality in Prognostic Studies (QUIPS) tool provided the platform for assessing the risk of bias across each included study. In our main comparison, we conducted meta-analyses for each obesity class separately. We also meta-analysed unclassified obesity and obesity as a continuous variable (5 kg/m2 increase in BMI (body mass index)). We used the GRADE framework to rate our certainty in the importance of the association observed between obesity and each outcome. As obesity is closely associated with other comorbidities, we decided to prespecify the minimum adjustment set of variables including age, sex, diabetes, hypertension, and cardiovascular disease for subgroup analysis. MAIN RESULTS: We identified 171 studies, 149 of which were included in meta-analyses. As compared to 'normal' BMI (18.5 to 24.9 kg/m2) or patients without obesity, those with obesity classes I (BMI 30 to 35 kg/m2), and II (BMI 35 to 40 kg/m2) were not at increased odds for mortality (Class I: odds ratio [OR] 1.04, 95% confidence interval [CI] 0.94 to 1.16, high certainty (15 studies, 335,209 participants); Class II: OR 1.16, 95% CI 0.99 to 1.36, high certainty (11 studies, 317,925 participants)). However, those with class III obesity (BMI 40 kg/m2 and above) may be at increased odds for mortality (Class III: OR 1.67, 95% CI 1.39 to 2.00, low certainty, (19 studies, 354,967 participants)) compared to normal BMI or patients without obesity. For mechanical ventilation, we observed increasing odds with higher classes of obesity in comparison to normal BMI or patients without obesity (class I: OR 1.38, 95% CI 1.20 to 1.59, 10 studies, 187,895 participants, moderate certainty; class II: OR 1.67, 95% CI 1.42 to 1.96, 6 studies, 171,149 participants, high certainty; class III: OR 2.17, 95% CI 1.59 to 2.97, 12 studies, 174,520 participants, high certainty). However, we did not observe a dose-response relationship across increasing obesity classifications for ICU admission and hospitalisation. AUTHORS' CONCLUSIONS Our findings suggest that obesity is an important independent prognostic factor in the setting of COVID-19. Consideration of obesity may inform the optimal management and allocation of limited resources in the care of COVID-19 patients.
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Affiliation(s)
| | - Daniel G Rayner
- Faculty Health Sciences, McMaster University, Hamilton, Canada
| | - Kamyar Shokraee
- Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Kamran Shokraie
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Parsa Panahi
- Student Research Committee, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Paravaneh Rastgou
- School of Medicine, Tabriz University of Medical Sciences, Tehran, Iran
| | | | - Feryal Momeni Landi
- Functional Neurosurgery Research Center, Shohada Tajrish Neurosurgical Center of Excellence, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Pariya Alinia
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Neda Parnianfard
- Research Center for Evidence-Based Medicine, Iranian Evidence-Based Medicine (EBM) Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nima Hemmati
- Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Behrooz Banivaheb
- Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Ramin Radmanesh
- Society of Clinical Research Associates, Toronto, Canada
- Graduate division, Master of Advanced Studies in Clinical Research, University of California, San Diego, California, USA
| | - Saba Alvand
- Liver and Pancreatobiliary Diseases Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Parmida Shahbazi
- School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | - Elaheh Shaker
- Non-communicable Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Kaveh Same
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Esmaeil Mohammadi
- Non-communicable Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Abdullah Malik
- Temerty Faculty of Medicine, University of Toronto, Toronto, Canada
| | | | - Peyman Nejat
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Alice Tamara
- Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
- Metabolic, Cardiovascular and Aging Cluster, The Indonesian Medical Education and Research Institute, Jakarta, Indonesia
| | - Yuan Chi
- Yealth Network, Beijing Yealth Technology Co., Ltd, Beijing, China
- Cochrane Campbell Global Ageing Partnership, London, UK
| | - Yuhong Yuan
- Department of Medicine, Division of Gastroenterology, McMaster University, Hamilton, Canada
| | - Nima Hajizadeh
- School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Cynthia Chan
- Michael G. DeGroote School of Medicine, Faculty of Health Sciences, McMaster University, Ontario, Canada
| | - Jamie Zhen
- Michael G. DeGroote School of Medicine, Faculty of Health Sciences, McMaster University, Ontario, Canada
| | - Dicky Tahapary
- Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Ontario, Canada
| | - Laura Anderson
- Department of Health Research Methods, Evidence, and Impact, Faculty of Health Sciences, McMaster University, Ontario, Canada
| | - Emma Apatu
- Department of Health Research Methods, Evidence, and Impact, Faculty of Health Sciences, McMaster University, Ontario, Canada
| | - Anel Schoonees
- Centre for Evidence-based Health Care, Division of Epidemiology and Biostatistics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Celeste E Naude
- Centre for Evidence-based Health Care, Division of Epidemiology and Biostatistics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Lehana Thabane
- Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, Canada
| | - Farid Foroutan
- Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, Canada
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Kajbafzadeh AM, Nabavizadeh B, Seyed Hossein Beigi R, Alinia P, Mirshahvalad SA. Virtual Three-Dimensional Magnetic Resonance Fetal Cystoscopy: A Novel Modality for Precise in Utero Evaluation of Urinary Tract. Urol J 2020; 17:102-104. [PMID: 30471075 DOI: 10.22037/uj.v0i0.4569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Urogenital anomalies are the most prevalent anomalies detected during pregnancy. Timely detection of these conditions could facilitate proper post-natal management and improve outcomes. In some cases, precise delineation of fetal urinary tract utilizing ultrasonography is not feasible. Moreover, sometimes the ultrasound study is technically limited. Magnetic resonance imaging could clarify the diagnosis in these situations. Prenatal ultrasonography indicated hydronephrosis and a 14 mm cystic lesion at right ureterovesical junction in a 25-week fetus. However, fetal magnetic resonance urography was not able to precisely clarify the condition and extension of ureterocele into the urethra. Fetal magnetic resonance virtual cystoscopy clearly demonstrated anatomy and extension of ureterocele. This modality provides three-dimensional cystoscopic-like view of urinary bladder and facilitates postnatal management.
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Affiliation(s)
- Abdol-Mohammad Kajbafzadeh
- Pediatric Urology and Regenerative Medicine Research Center, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran.
| | - Behnam Nabavizadeh
- Pediatric Urology and Regenerative Medicine Research Center, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Seyed Hossein Beigi
- Pediatric Urology and Regenerative Medicine Research Center, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Pariya Alinia
- Pediatric Urology and Regenerative Medicine Research Center, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Ali Mirshahvalad
- Pediatric Urology and Regenerative Medicine Research Center, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
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