A Meta-analysis to Compare Four-layer to Short-stretch Compression Bandaging for Venous Leg Ulcer Healing.

Abstract

Compression therapy is the standard of care for venous leg ulcers (VLUs), and some evidence suggests 4-layer compression is more effective than short-stretch bandages. A meta-analysis was conducted to compare the effectiveness of these 2 compression bandages for venous ulcer healing. In March 2016, a systematic review of the literature was conducted to identify randomized controlled trials. Databases used included Pubmed/MEDLINE, EMBASE, Cochrane Central, the Cumulative Index of Nursing and Allied Health Literature, and the Latin American and Caribbean of Health Sciences Information System. Search terms were varicose ulcer, venous leg ulcer, venous ulceration, leg ulcer, compression bandages, compressive therapy, multilayer system, four-layer system, elastic bandages, short-stretch bandage, short-stretch system, and inelastic bandage. No publication time or language restrictions were imposed, but findings subjected to analysis were limited to results of research that reported healing and healing time using 4-layer and short-stretch compression only. The quality of the studies was assessed using the Jadad scale. Data extracted included study design, country, target population demographics, VLU clinical aspects at baseline, sample size, interventions applied, follow-up period, complete healing, and healing time as outcomes. Relative risk was calculated considering a 95% confidence interval for dichotomous variables (complete healing), and heterogeneity was statistically assessed among the studies using the chi-squared test assuming random effect when I2 ≥50%. The search yielded 557 papers; 21 met the study criteria for full-text analysis, and 7 met the meta-analysis inclusion criteria. The studies included 1437 patients, average age 70 (range 23-97) years with 1446 venous leg ulcers. Most (5) studies were classified as being at low risk of bias. At 12 and 16 weeks, 259 ulcers (51.08%) healed completely in the 4-layer and 234 (46.34%) in the short-stretch bandage groups, respectively (P = .41). At 24 weeks, 268 ulcers (69.07%) in the 4-layer and 257 (62.23%) in the short-stretch bandage groups, respectively, had healed (P = .16). The 2 bandage systems evaluated were similar in achieving complete healing at their respective study endpoints. The average time for healing was 73.6 ± 14.64 days in the 4-layer and 83.8 ± 24.89 days in the short-stretch bandage groups; no meta-analysis was done for this outcome due the inability to retrieve all the individual patient data for each study. The choice of compression system remains at the discretion of the clinicians based on evidence of effectiveness, patient tolerability, and preference. Additional randomized controlled trials to compare various wound and patient outcomes between different compression systems are warranted.