Network Meta‐Analysis Comparing the Outcomes of Treatments for Intermittent Claudication Tested in Randomized Controlled Trials

Background No network meta‐analysis has considered the relative efficacy of cilostazol, home exercise therapy, supervised exercise therapy (SET), endovascular revascularization (ER), and ER plus SET (ER+SET) in improving maximum walking distance (MWD) over short‐ (<1 year), moderate‐ (1 to <2 ...

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Main Authors: Shivshankar Thanigaimani, James Phie, Chinmay Sharma, Shannon Wong, Muhammad Ibrahim, Pacific Huynh, Joseph Moxon, Rhondda Jones, Jonathan Golledge
Format: Article
Language:English
Published: Wiley 2021-05-01
Series:Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
Subjects:
Online Access:https://www.ahajournals.org/doi/10.1161/JAHA.120.019672
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author Shivshankar Thanigaimani
James Phie
Chinmay Sharma
Shannon Wong
Muhammad Ibrahim
Pacific Huynh
Joseph Moxon
Rhondda Jones
Jonathan Golledge
author_facet Shivshankar Thanigaimani
James Phie
Chinmay Sharma
Shannon Wong
Muhammad Ibrahim
Pacific Huynh
Joseph Moxon
Rhondda Jones
Jonathan Golledge
author_sort Shivshankar Thanigaimani
collection DOAJ
description Background No network meta‐analysis has considered the relative efficacy of cilostazol, home exercise therapy, supervised exercise therapy (SET), endovascular revascularization (ER), and ER plus SET (ER+SET) in improving maximum walking distance (MWD) over short‐ (<1 year), moderate‐ (1 to <2 years), and long‐term (≥2 years) follow‐up in people with intermittent claudication. Methods and Results A systematic literature search was performed to identify randomized controlled trials testing 1 or more of these 5 treatments according to Preferred Reporting Items for Systematic Review and Meta‐Analysis guidelines. The primary outcome was improvement in MWD assessed by a standardized treadmill test. Secondary outcomes were adverse events and health‐related quality of life. Network meta‐analysis was performed using the gemtc R statistical package. The Cochrane collaborative tool was used to assess risk of bias. Forty‐six trials involving 4256 patients were included. At short‐term follow‐up, home exercise therapy (mean difference [MD], 89.4 m; 95% credible interval [CrI], 20.9–157.7), SET (MD, 186.8 m; 95% CrI, 136.4–237.6), and ER+SET (MD, 326.3 m; 95% CrI, 222.6–430.6), but not ER (MD, 82.5 m; 95% CrI, −2.4 to 168.2) and cilostazol (MD, 71.1 m; 95% CrI, −24.6 to 167.9), significantly improved MWD (in meters) compared with controls. At moderate‐term follow‐up, SET (MD, 201.1; 95% CrI, 89.8–318.3) and ER+SET (MD, 368.5; 95% CrI, 195.3–546.9), but not home exercise therapy (MD, 99.4; 95% CrI, −174.0 to 374.9) or ER (MD, 84.2; 95% CrI, −35.3 to 206.4), significantly improved MWD (in meters) compared to controls. At long‐term follow‐up, none of the tested treatments significantly improved MWD compared to controls. Adverse events and quality of life were reported inconsistently and could not be meta‐analyzed. Risk of bias was low, moderate, and high in 4, 24, and 18 trials respectively. Conclusions This network meta‐analysis suggested that SET and ER+SET are effective at improving MWD over the moderate term (<2 year) but not beyond this. Durable treatments for intermittent claudication are needed.
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spelling doaj.art-220981bce1f84833a499d0d629dc90252022-12-21T21:09:57ZengWileyJournal of the American Heart Association: Cardiovascular and Cerebrovascular Disease2047-99802021-05-0110910.1161/JAHA.120.019672Network Meta‐Analysis Comparing the Outcomes of Treatments for Intermittent Claudication Tested in Randomized Controlled TrialsShivshankar Thanigaimani0James Phie1Chinmay Sharma2Shannon Wong3Muhammad Ibrahim4Pacific Huynh5Joseph Moxon6Rhondda Jones7Jonathan Golledge8The Queensland Research Centre for Peripheral Vascular Disease (QRC‐PVD) College of Medicine and Dentistry James Cook University Townsville Queensland AustraliaThe Queensland Research Centre for Peripheral Vascular Disease (QRC‐PVD) College of Medicine and Dentistry James Cook University Townsville Queensland AustraliaThe Queensland Research Centre for Peripheral Vascular Disease (QRC‐PVD) College of Medicine and Dentistry James Cook University Townsville Queensland AustraliaThe Queensland Research Centre for Peripheral Vascular Disease (QRC‐PVD) College of Medicine and Dentistry James Cook University Townsville Queensland AustraliaThe Queensland Research Centre for Peripheral Vascular Disease (QRC‐PVD) College of Medicine and Dentistry James Cook University Townsville Queensland AustraliaThe Queensland Research Centre for Peripheral Vascular Disease (QRC‐PVD) College of Medicine and Dentistry James Cook University Townsville Queensland AustraliaThe Queensland Research Centre for Peripheral Vascular Disease (QRC‐PVD) College of Medicine and Dentistry James Cook University Townsville Queensland AustraliaThe Queensland Research Centre for Peripheral Vascular Disease (QRC‐PVD) College of Medicine and Dentistry James Cook University Townsville Queensland AustraliaThe Queensland Research Centre for Peripheral Vascular Disease (QRC‐PVD) College of Medicine and Dentistry James Cook University Townsville Queensland AustraliaBackground No network meta‐analysis has considered the relative efficacy of cilostazol, home exercise therapy, supervised exercise therapy (SET), endovascular revascularization (ER), and ER plus SET (ER+SET) in improving maximum walking distance (MWD) over short‐ (<1 year), moderate‐ (1 to <2 years), and long‐term (≥2 years) follow‐up in people with intermittent claudication. Methods and Results A systematic literature search was performed to identify randomized controlled trials testing 1 or more of these 5 treatments according to Preferred Reporting Items for Systematic Review and Meta‐Analysis guidelines. The primary outcome was improvement in MWD assessed by a standardized treadmill test. Secondary outcomes were adverse events and health‐related quality of life. Network meta‐analysis was performed using the gemtc R statistical package. The Cochrane collaborative tool was used to assess risk of bias. Forty‐six trials involving 4256 patients were included. At short‐term follow‐up, home exercise therapy (mean difference [MD], 89.4 m; 95% credible interval [CrI], 20.9–157.7), SET (MD, 186.8 m; 95% CrI, 136.4–237.6), and ER+SET (MD, 326.3 m; 95% CrI, 222.6–430.6), but not ER (MD, 82.5 m; 95% CrI, −2.4 to 168.2) and cilostazol (MD, 71.1 m; 95% CrI, −24.6 to 167.9), significantly improved MWD (in meters) compared with controls. At moderate‐term follow‐up, SET (MD, 201.1; 95% CrI, 89.8–318.3) and ER+SET (MD, 368.5; 95% CrI, 195.3–546.9), but not home exercise therapy (MD, 99.4; 95% CrI, −174.0 to 374.9) or ER (MD, 84.2; 95% CrI, −35.3 to 206.4), significantly improved MWD (in meters) compared to controls. At long‐term follow‐up, none of the tested treatments significantly improved MWD compared to controls. Adverse events and quality of life were reported inconsistently and could not be meta‐analyzed. Risk of bias was low, moderate, and high in 4, 24, and 18 trials respectively. Conclusions This network meta‐analysis suggested that SET and ER+SET are effective at improving MWD over the moderate term (<2 year) but not beyond this. Durable treatments for intermittent claudication are needed.https://www.ahajournals.org/doi/10.1161/JAHA.120.019672cilostazolendovascular revascularizationexercise therapyintermittent claudicationmaximum walking distancenetwork meta‐analysis
spellingShingle Shivshankar Thanigaimani
James Phie
Chinmay Sharma
Shannon Wong
Muhammad Ibrahim
Pacific Huynh
Joseph Moxon
Rhondda Jones
Jonathan Golledge
Network Meta‐Analysis Comparing the Outcomes of Treatments for Intermittent Claudication Tested in Randomized Controlled Trials
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
cilostazol
endovascular revascularization
exercise therapy
intermittent claudication
maximum walking distance
network meta‐analysis
title Network Meta‐Analysis Comparing the Outcomes of Treatments for Intermittent Claudication Tested in Randomized Controlled Trials
title_full Network Meta‐Analysis Comparing the Outcomes of Treatments for Intermittent Claudication Tested in Randomized Controlled Trials
title_fullStr Network Meta‐Analysis Comparing the Outcomes of Treatments for Intermittent Claudication Tested in Randomized Controlled Trials
title_full_unstemmed Network Meta‐Analysis Comparing the Outcomes of Treatments for Intermittent Claudication Tested in Randomized Controlled Trials
title_short Network Meta‐Analysis Comparing the Outcomes of Treatments for Intermittent Claudication Tested in Randomized Controlled Trials
title_sort network meta analysis comparing the outcomes of treatments for intermittent claudication tested in randomized controlled trials
topic cilostazol
endovascular revascularization
exercise therapy
intermittent claudication
maximum walking distance
network meta‐analysis
url https://www.ahajournals.org/doi/10.1161/JAHA.120.019672
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