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Zavalis EA, Rameau A, Saraswathula A, Vist J, Schuit E, Ioannidis JP. Availability of evidence and comparative effectiveness for surgical versus drug interventions: an overview of systematic reviews and meta-analyses. BMJ Open 2024; 14:e076675. [PMID: 38195174 PMCID: PMC10810041 DOI: 10.1136/bmjopen-2023-076675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 12/18/2023] [Indexed: 01/11/2024] Open
Abstract
OBJECTIVES This study aims to examine the prevalence of comparisons of surgery to drug regimens, the strength of evidence of such comparisons and whether surgery or the drug intervention was favoured. DESIGN Systematic review of systematic reviews (umbrella review). DATA SOURCES Cochrane Database of Systematic Reviews. ELIGIBILITY CRITERIA Systematic reviews attempt to compare surgical to drug interventions. DATA EXTRACTION We extracted whether the review found any randomised controlled trials (RCTs) for eligible comparisons. Individual trial results were extracted directly from the systematic review. SYNTHESIS The outcomes of each meta-analysis were resynthesised into random-effects meta-analyses. Egger's test and excess significance were assessed. RESULTS Overall, 188 systematic reviews intended to compare surgery versus drugs. Only 41 included data from at least one RCT (total, 165 RCTs) and covered a total of 103 different outcomes of various comparisons of surgery versus drugs. A GRADE assessment was performed by the Cochrane reviewers for 87 (83%) outcomes in the reviews, indicating the strength of evidence was high in 4 outcomes (4%), moderate in 22 (21%), low in 27 (26%) and very low in 33 (32%). Based on 95% CIs, the surgical intervention was favoured in 38/103 (37%), and the drugs were favoured in 13/103 (13%) outcomes. Of the outcomes with high GRADE rating, only one showed conclusive superiority in our reanalysis (sphincterotomy was better than medical therapy for anal fissure). Of the 22 outcomes with moderate GRADE rating, 6 (27%) were inconclusive, 14 (64%) were in favour of surgery and 2 (9%) were in favour of drugs. There was no evidence of excess significance. CONCLUSIONS Though the relative merits of surgical versus drug interventions are important to know for many diseases, high strength randomised evidence is rare. More randomised trials comparing surgery to drug interventions are needed.
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Affiliation(s)
- Emmanuel A Zavalis
- Department of Learning Informatics Management and Ethics, Karolinska Institutet, Stockholm, Sweden
- Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, California, USA
| | - Anaïs Rameau
- Sean Parker Institute for the Voice, Department of Otolaryngology-Head and Neck Surgery, Weill Cornell Medical College, New York, New York, USA
| | - Anirudh Saraswathula
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Joachim Vist
- Department of Learning Informatics Management and Ethics, Karolinska Institutet, Stockholm, Sweden
| | - Ewoud Schuit
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Cochrane Denmark, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - John P Ioannidis
- Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, California, USA
- Stanford Prevention Research Center, Department of Medicine, and Department of Epidemiology and Population Health, Stanford University, Stanford, California, USA
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Atkova EL, Krakhovetskiy NN, Fokina ND, Murakhovskaya YK, Kulish KK, Avagyan AS, Smirnova NS. [Pharmacological prevention of fibrosis in dacryosurgery]. Vestn Oftalmol 2024; 140:180-189. [PMID: 38739149 DOI: 10.17116/oftalma2024140022180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
Chronic inflammatory process in the lacrimal drainage system is the main etiological factor leading to dacryostenosis and consequent obliteration - partial and total nasolacrimal duct obstruction. Prevention of this process is an urgent problem in dacryology. Currently, there is very little research on the development and use of conservative methods for treating dacryostenosis using anti-inflammatory, as well as anti-fibrotic drugs. In this regard, the main method of treating lacrimal drainage obstruction is dacryocystorhinostomy. However, the problem of recurrence after this operation has not been resolved. The causes of recurrence can be cicatricial healing of dacryocystorhinostomy ostium, canalicular obstruction, formation of granulations and synechiae in its area. Surgical methods of recurrence prevention are associated with possible complications, and there is conflicting data on the feasibility of their use. Based on this, the development of pharmacological methods for the prevention of fibrosis in dacryology is promising, among which the antitumor antibiotic Mitomycin C is the most studied. However, there are no specific scientifically substantiated recommendations for the use of this drug, and the data on its effectiveness vary. This has prompted researchers to look for and study alternative anti-fibrotic agents, such as antitumor drugs, glucocorticoids, hyaluronic acid, small molecule, biological, immunological and genetically engineered drugs, as well as nanoparticles. This review presents the current data on the efficacy and prospects of the use of these drugs in dacryology.
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Affiliation(s)
- E L Atkova
- Krasnov Research Institute of Eye Diseases, Moscow, Russia
| | | | - N D Fokina
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Yu K Murakhovskaya
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - K K Kulish
- Krasnov Research Institute of Eye Diseases, Moscow, Russia
| | - A S Avagyan
- Krasnov Research Institute of Eye Diseases, Moscow, Russia
| | - N S Smirnova
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
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Atkova EL, Fedorov AA, Root AO, Krakhovetsky NN, Yartsev VD. Morphological features of regenerative processes after dacryocystorinostomy with the use of mitomycin C. Orbit 2023; 42:496-501. [PMID: 36263626 DOI: 10.1080/01676830.2022.2135115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 10/06/2022] [Indexed: 10/24/2022]
Abstract
PURPOSE To study the morphological features of regenerative processes in dynamics after dacryocystorinostomy (DCR) with the use of Mitomycin C (MMC). METHODS The study includes 31 cases. All patients underwent endonasal endoscopic DCR. Group 1 included 16 cases who received MMC injections. Group 2 included 15 cases who were treated with MMC on collagen sponge into the area of formed anastomosis. Biopsies for histological examination were taken on the 2nd, 5th, 7th, 14th, 21st, 28th and 60th days after the surgery. The samples were subjected to histological examination. RESULTS Activated fibroblasts were detected in patients of group 2 on the 5th day after the surgery which became the main cellular elements by the 14th day, and incomplete fibroblast mitoses were observed in group 1 by the 14th day. On the 28th day after the surgery, the transformation of the extracellular matrix into loose connective tissue was determined in patients of group 2, while single cellular elements represented by fibroblasts were preserved in biopsies obtained from patients of group 1. By the 60th day after the surgery, the restoration of a full-fledged epithelial lining was observed in all specimens. CONCLUSION With the injection of MMC, inhibition of collagenogenesis by depression of extracellular collagen matrix formation, production of abortive mitoses in cells and inhibition of maturation and transformation of fibroblasts occur. The regeneration process takes place after MMC injection under a relative decrease in fibroblast impact.
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Affiliation(s)
- Eugenia L Atkova
- Lacrimal pathology department, Scientific Research Institute of Eye Diseases, Moscow, Russia
| | - Anatoliy A Fedorov
- Fundamental research in ophthalmology laboratory, Scientific Research Institute of Eye Diseases, Moscow, Russia
| | - Anna O Root
- Outpatient clinic, Scientific Research Institute of Eye Diseases, Moscow, Russia
| | - Nikolay N Krakhovetsky
- Lacrimal pathology department, Scientific Research Institute of Eye Diseases, Moscow, Russia
| | - Vasily D Yartsev
- Lacrimal pathology department, Scientific Research Institute of Eye Diseases, Moscow, Russia
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Zavalis EA, Rameau A, Saraswathula A, Vist J, Schuit E, Ioannidis JPA. Availability of evidence and comparative effectiveness for surgical versus drug interventions: an overview of systematic reviews. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.01.30.23285207. [PMID: 36778340 PMCID: PMC9915830 DOI: 10.1101/2023.01.30.23285207] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objectives To examine the prevalence of comparisons of surgery to drug regimens, the strength of evidence of such comparisons, and whether surgery or the drug intervention was favored. Design Systematic review of systematic reviews (umbrella review). Data sources Cochrane Database of Systematic Reviews (CDSR). Eligibility criteria and synthesis of results Using the search term "surg*" in CDSR, we retrieved systematic reviews of surgical interventions. Abstracts were subsequently screened to find systematic reviews that aimed to compare surgical to drug interventions; and then, among them, those that included any randomized controlled trials (RCTs) for such comparisons. Trial results data were extracted manually and synthesized into random-effects meta-analyses. Results Overall, 188 systematic reviews intended to compare surgery versus drugs. Only 41 included data from at least one RCT (total, 165 RCTs with data) and covered a total of 103 different outcomes of various comparisons of surgery versus drugs. A GRADE assessment was performed by the Cochrane reviewers for 87 (83%) outcomes in the reviews, indicating the strength of evidence was high in 4 outcomes (4%), moderate in 22 (21%), low in 27 (26%) and very low in 33 (32%). Based on 95% confidence intervals, the surgical intervention was favored in 38/103 (37%), and the drugs were favored in 13/103 (13%) outcomes. Of the outcomes with high GRADE rating, only one showed conclusive superiority (sphincterotomy was better than medical therapy for anal fissure). Of the 22 outcomes with moderate GRADE rating, 6 (27%) were inconclusive, 14 (64%) were in favor of surgery, and 2 (9%) were in favor of drugs. Conclusions Though the relative merits of surgical versus drug interventions are important to know for many diseases, high strength randomized evidence is rare. More randomized trials comparing surgery to drug interventions are needed. Protocol registration https://osf.io/p9x3j.
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Affiliation(s)
- Emmanuel A Zavalis
- Department of Learning Informatics Management and Ethics, Karolinska Institutet, Stockholm, Sweden
- Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA, USA
| | - Anaïs Rameau
- Sean Parker Institute for the Voice, Department of Otolaryngology-Head and Neck Surgery, Weill Cornell Medical College, New York, NY, USA
| | - Anirudh Saraswathula
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Joachim Vist
- Department of Learning Informatics Management and Ethics, Karolinska Institutet, Stockholm, Sweden
| | - Ewoud Schuit
- Julius Center, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
- Cochrane Netherland, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - John P A Ioannidis
- Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA, USA
- Stanford Prevention Research Center, Department of Medicine, and Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, CA, USA
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Success Rate Comparis on of External Dacryocystorhinostomy with 5-FU Application or Silicone Tube Intubation. J Ophthalmol 2022; 2022:2941283. [PMID: 35847350 PMCID: PMC9282996 DOI: 10.1155/2022/2941283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 06/04/2022] [Accepted: 06/14/2022] [Indexed: 11/27/2022] Open
Abstract
Aims To compare anatomical and functional success rates in patients with primary acquired nasolacrimal duct obstruction undergoing external dacryocystorhinostomy (EX-DCR) either with adjunctive 5-fluorouracil (5-FU) or silicone tube intubation. Methods In this retrospective comparative study, 37 eyes in 32 patients who underwent EX-DCR with adjunctive 5-FU (5-FU group) and 43 eyes in 40 patients who underwent EX-DCR with silicone intubation (controls) between 2018 and 2019 were included. Results The mean age of patients in 5-FU and control groups was 59.8 ± 9.4 and 57.0 ± 15.3 years, respectively. The mean follow-up was 18.70 ± 3.47 months in the 5-FU group and 21.38 ± 7.76 months in the control group. Anatomical success was determined based on patency rates at the time of irrigation and recurrence, while subjective symptoms (improvement in tearing) were used to evaluate the functional success. Lacrimal patency rates in 5-FU and control groups were 83.3% and 86.0%, respectively, while recurrence was observed in 16.2% of 5-FU and 14.0% of control subjects. The two groups were comparable in terms of patency and recurrence rates (p=0.777) as well as rates of epiphora (p=0.212). Conclusion Both EX-DCR procedures were effective in the management of nasolacrimal duct obstruction. Our results suggest that EX-DCR augmented with 5-FU may represent a more feasible and cost-effective therapeutic option as compared to silicone tube placement in these patients.
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Kaptı HB, Korkmaz H. Evaluation of the efficacy of postoperative triamcinolone in endoscopic dacryocystorhinostomy using lacrimal symptom questionnaire. Int Ophthalmol 2022; 42:2573-2580. [PMID: 35357636 DOI: 10.1007/s10792-022-02305-6] [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: 05/27/2021] [Accepted: 03/10/2022] [Indexed: 11/24/2022]
Abstract
PURPOSE To evaluate the effect of postoperative nasal triamcinolone spray use in primary endoscopic dacryocystorhinostomy using The Lacrimal Symptom Questionnaire. METHODS This study included a series of 50 consecutive retrospective cases with primary endoscopic dacryocystorhinostomy and with silicone stent implantation who were followed up for 6 months postoperatively. Patients using nasal triamcinolone spray for 3 months postoperatively were included in the triamcinolone group. Patients not using triamcinolone were included in the control group. Lacrimal stents were removed 3 months postoperatively. The Lacrimal Symptom Questionnaire (Lac-Q) was performed in the preoperative and postoperative 6th month. Anatomical success, functional success, and changes in lacrimal symptom and social impact scores were compared between the two groups 6 months after surgery. RESULTS Results of 48 endoscopic dacryocystorhinostomies performed on 48 patients (23 triamcinolone group, 25 control group) meeting the inclusion criteria were analyzed. The anatomical success rate (95.7% vs. 84.0%, p = 0.350) and the functional success rate (91.3% vs. 76.0%, p = 0.249) were higher in the triamcinolone group, but this difference was not statistically significant. No complications were observed in the triamcinolone group, whereas complications developed in two patients in the control group (p = 0.490). The mean change in total lac-Q score was 11.0 in the triamcinolone group and 9.0 in the control group (p = 0.011). The mean change in social impact score was 4.0 in the triamcinolone group and 3.0 in the control group (p = 0.005). Mean change in lacrimal symptom score was 6.0 in the triamcinolone group and 6.0 in the control group (p = 0.368) CONCLUSIONS: Our study indicated that postoperative use of triamcinolone spray increases the success rate of endoscopic dacryocystorhinostomy and also revealed that triamcinolone may also lead to greater improvement in quality of life scores than the control group using a validated questionnaire.
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Affiliation(s)
| | - Hakan Korkmaz
- Department of Otorhinolaryngology, Faculty of Medicine, Ordu University, 52200, Ordu, Turkey
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Giordano Resti A, Vinciguerra A, Bordato A, Rampi A, Tanzini U, Mattalia L, Bandello F, Trimarchi M. The importance of clinical presentation on long-term outcomes of external dacryocystorhinostomies: Our experience on 245 cases. Eur J Ophthalmol 2021; 32:2646-2651. [PMID: 34806462 DOI: 10.1177/11206721211059702] [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] [Indexed: 11/17/2022]
Abstract
PURPOSE External dacryocystorhinostomy (EXT-DCR) is a surgical approach commonly used to treat post-canalicular acquired lacrimal obstruction whose success rate has been described, equally with endoscopic DCR, to be superior to other available treatments. METHODS At San Raffaele Hospital, Milan (Italy), from January 2008 to December 2020, 245 EXT-DCRs were performed. All patients underwent routine pre-operative work-up including Jones tests and probing and irrigation of the lacrimal pathway; when necessary, a multidisciplinary approach with nasal endoscopy was performed. The surgical approach was followed by positioning of a bicanalicular stent which was left in place for 6 months. Success was defined as resolution of clinical signs/symptoms and free lacrimal flow on functional test. RESULTS Of the cases enrolled, 26.9% were treated for recurrent epiphora (group 1), and 73.1% for epiphora associated with chronic dacryocystitis (group 2). After a median follow-up of 71 months, group 1 had success at T0 (1 month) and T1 (long-term) of 81.8% and 60.6%, respectively, compared to 93.8% and 77.7% in group 2. Statistical analysis showed a significant association with surgery both at T0 (p = 0.018) and T1 (p = 0.012) with group 2 showing better outcomes. Additionally, the cosmetic outcome of the external scar was defined as invisible in 91.8% of cases and slightly visible in 8.2%. CONCLUSIONS External dacryocystorhinostomy provides long-term reliable results particularly in case of chronic dacryocystitis. Moreover, the optimal esthetic outcome of the external scar should be no longer considered the only guiding principle of treatment modality, particularly in the elderly.
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Affiliation(s)
- Antonio Giordano Resti
- Division of Head and Neck Department, Ophthalmologic Unit, 9372IRCCS San Raffaele Scientific Institute, Milano, Italy
| | - Alessandro Vinciguerra
- School of Medicine, 18985Vita-Salute San Raffaele University, Milano, Italy.,Division of Head and Neck Department, Otorhinolaryngology Unit, IRCCS San Raffaele Scientific Institute, Milano, Italy
| | - Alessandro Bordato
- Division of Head and Neck Department, Ophthalmologic Unit, 9372IRCCS San Raffaele Scientific Institute, Milano, Italy.,School of Medicine, 18985Vita-Salute San Raffaele University, Milano, Italy
| | - Andrea Rampi
- School of Medicine, 18985Vita-Salute San Raffaele University, Milano, Italy.,Division of Head and Neck Department, Otorhinolaryngology Unit, IRCCS San Raffaele Scientific Institute, Milano, Italy
| | - Umberto Tanzini
- School of Medicine, 18985Vita-Salute San Raffaele University, Milano, Italy.,Division of Head and Neck Department, Otorhinolaryngology Unit, IRCCS San Raffaele Scientific Institute, Milano, Italy
| | - Luisa Mattalia
- School of Medicine, 18985Vita-Salute San Raffaele University, Milano, Italy.,Division of Head and Neck Department, Otorhinolaryngology Unit, IRCCS San Raffaele Scientific Institute, Milano, Italy
| | - Francesco Bandello
- Division of Head and Neck Department, Ophthalmologic Unit, 9372IRCCS San Raffaele Scientific Institute, Milano, Italy.,School of Medicine, 18985Vita-Salute San Raffaele University, Milano, Italy
| | - Matteo Trimarchi
- School of Medicine, 18985Vita-Salute San Raffaele University, Milano, Italy.,Division of Head and Neck Department, Otorhinolaryngology Unit, IRCCS San Raffaele Scientific Institute, Milano, Italy
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Long-term results of a balloon-assisted endoscopic approach in failed dacryocystorhinostomies. Eur Arch Otorhinolaryngol 2021; 279:1929-1935. [PMID: 34251520 PMCID: PMC8273032 DOI: 10.1007/s00405-021-06975-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 06/28/2021] [Indexed: 11/27/2022]
Abstract
Purpose Endoscopic endonasal balloon-assisted dacryoplasty is a minimally invasive surgical approach that can be applied after failure of dacryocystorhinostomy with recurrence of distal acquired lacrimal obstruction. Methods At the Department of Otolaryngology, San Raffaele Hospital, Milan (Italy), from December 2016 to October 2020, 14 patients underwent trans-nasal balloon-assisted dacryoplasty after a failed dacryocystorhinostomy (both external and endoscopic endonasal). The routinary pre-operative work-up included multidisciplinary study of the lacrimal disease, which consisted in primary ophthalmological and otorhinolaryngological visits associated with nasal endoscopy, in which a radiological exam was added if needed. The surgical approach includes pneumatic enlargement of the stenotic rhinostomy, created during the primary dacryocystorhinostomy, using a high-pressure trans-nasal balloon catheter. Anatomical success was considered when the ostium was patent upon irrigation, while functional success was considered as resolution of epiphora or free lacrimal flow on functional test. Results Among 14 patients included and after a mean follow-up of 19.5 months (range 13–51 months), anatomic success was achieved in 100% of patients and functional success was achieved in the 85.7% (12/14). Operative time ranged from 9 to 28 min (mean 18 min) and no complications were reported. Conclusion Trans-nasal balloon-assisted dacryoplasty is a mini-invasive surgical approach to treat failed dacryocystorhinostomies with reliable and stable outcomes in the long term. The absence of post-surgical complications, high success rate and short operative time are the main features of this innovative procedure.
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Phelps PO, Abariga SA, Cowling BJ, Selva D, Marcet MM. Antimetabolites as an adjunct to dacryocystorhinostomy for nasolacrimal duct obstruction. Cochrane Database Syst Rev 2020; 4:CD012309. [PMID: 32259290 PMCID: PMC7138426 DOI: 10.1002/14651858.cd012309.pub2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND Nasolacrimal duct obstruction (NLDO) is a condition that results in the overflow of tears (epiphora) or infection of the nasolacrimal sac (dacryocystitis). The etiology of acquired NLDO is multifactorial and is not fully understood. Dacryocystorhinostomy (DCR) is the surgical correction of NLDO, which aims to establish a new drainage pathway between the lacrimal sac and the nose. The success of DCR is variable; the most common cause of failure is fibrosis and stenosis of the surgical ostium. Antimetabolites such as mitomycin-C (MMC) and 5-fluorouracil (5-FU) have been shown to be safe and effective in reducing fibrosis and improving clinical outcomes in other ophthalmic surgery settings (e.g. glaucoma and cornea surgery). Application of antimetabolites at the time of DCR has been studied, but the utility of these treatments remains uncertain. OBJECTIVES Primary objective: To determine if adjuvant treatment with antimetabolites improves functional success in the setting of DCR compared to DCR alone. Secondary objectives: To determine if anatomic success of DCR is increased with the use of antimetabolites, and if the surgical ostium is larger in participants treated with antimetabolites. SEARCH METHODS We searched the Cochrane Register for Controlled Trials (CENTRAL) (which contains the Cochrane Eye and Vision Trials Register) (2019, Issue 9), Ovid MEDLINE, Embase.com, PubMed, LILACS (Latin American and Caribbean Health Sciences Literature database), ClinicalTrials.gov, and the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP). We did not use any date or language restrictions in the electronic searches. We last searched the electronic databases on 6 September 2019. SELECTION CRITERIA We only included randomized controlled trials. Eligible studies were those that compared the administration of antimetabolites of any dose and concentration versus placebo or another active treatment in participants with NLDO undergoing primary DCR and reoperation. We only included studies that had enrolled adults 18 years or older. We also included studies that used silicone intubation as part of the DCR procedure. DATA COLLECTION AND ANALYSIS We used standard methodological procedures expected by Cochrane. Two review authors independently screened the search results, assessed risk of bias, and extracted data from the included studies using an electronic data collection form. MAIN RESULTS We included 31 studies in the review, of which 23 (1309 participants) provided data relating to our primary and secondary outcomes. Many of the 23 studies evaluated functional success, while others also assessed our secondary outcomes of anatomic success or ostium size, or both. Study characteristics Participant characteristics varied across studies, with the age of participants ranging from 30 to 70 years. Participants were predominantly women. These demographics correspond to those most frequently affected by nasolacrimal duct obstruction. Almost all of the studies utilized MMC as the antimetabolite, with only one using 5-FU. We assessed most trials as at unclear risk of bias for most domains. Conflicts of interest were not frequently reported, although the antimetabolites used are generic medications, and studies were not likely to be conducted for financial interest. Findings Twenty studies provided data on the primary outcome of functional success, of which 7 (356 participants) provided data at 6 months and 14 (909 participants) provided data beyond 6 months. At six months, the results showed no evidence of effect of antimetabolite on functional success (risk ratio (RR) 1.12, 95% confidence interval (CI) 0.98 to 1.29; low-certainty evidence). Beyond six months, the results favored the antimetabolite group (RR 1.15, 95% CI 1.07 to 1.25; moderate-certainty evidence). Fourteen studies reported data on the secondary outcome of anatomic success, of which 4 (306 participants) reported data at 6 months and 12 (831 participants) provided data beyond 6 months. Results at six months showed no evidence of effect of antimetabolite on anatomic success (RR 1.02, 95% CI 0.95 to 1.11; low-certainty evidence). Beyond six months, participants in the antimetabolite group were more likely to achieve anatomic success than those receiving DCR alone (RR 1.09, 95% CI 1.04 to 1.15; moderate-certainty evidence). At six months and beyond six months follow-up, two studies reported mean change in ostium size. We did not conduct meta-analysis for the various follow-up periods due to clinical, methodological, and statistical heterogeneity. However, point estimates from these studies at six months consistently favored participants in the antimetabolite group (low-certainty evidence). Beyond six months, while point estimates from one study favored participants in the antimetabolite group, estimates from another study showed no evidence of a difference between the two groups. The certainty of evidence at both time points was low. Adverse events Adverse events were rare. One study reported that one participant in the MMC group experienced delayed wound healing. Other studies reported no significant adverse events related to the application of antimetabolites. AUTHORS' CONCLUSIONS There is moderate-certainty evidence that application of antimetabolites at the time of DCR increases functional and anatomic success of DCR when patients are followed for more than six months after surgery, but no evidence of a difference at six months, low-certainty of evidence. There is low-certainty evidence that combining antimetabolite with DCR increases the size of the lacrimal ostium at six months. However, beyond six months, the evidence remain uncertain. Adverse effects of the application of antimetabolites were minimal.
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Affiliation(s)
- Paul O Phelps
- NorthShore University HealthSystemDepartment of Surgery2050 Pfingsten Rd.Suite 280GlenviewILUSA60026
- University of ChicagoDepartment of OphthalmologyChicagoIllinoisUSA60637
| | - Samuel A. Abariga
- Johns Hopkins Bloomberg School of Public HealthEpidemiology615 N. Wolfe StreetBaltimoreMarylandUSA
| | - Benjamin J Cowling
- University of Hong KongDivision of Epidemiology and Biostatistics, School of Public Health624‐627, 6/F, Core F, Cyberport 3, 100 Cyberport RoadCyperportHong Kong00000
| | - Dinesh Selva
- University of AdelaideSouth Australian Institute of OphthalmologyLevel 8, Health Sciences Building 16/910AdelaideAustralia5000
| | - Marcus M Marcet
- University of Hong KongDepartment of OphthalmologyRm 301, Blk B, Cyberport 4, 100 Cyberport RoadCyberportHong Kong00000
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