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Naik et al. Vessel Plus 2018;2:38 I http://dx.doi.org/10.20517/2574-1209.2018.62 Page 7 of 10

Odds ratio Odds ratio
Study or subgroup Weight IV, random, 95% CI IV, random, 95% CI
1.1.1 RCT
Nowicki; 2011 8.3% 0.11 [0.01, 2.01]
Rudez; 2007 53.8% 0.37 [0.12, 1.17]
Shapira; 2006 Not estimable
Subtotal (95% CI) 62.2% 0.31 [0.11, 0.92]
Total events
2
2
2
Heterogeneity: Tau = 0.00; χ = 0.60, df = 1 (P = 0.44); I = 0%
Test for overall effect: Z = 2.12 (P = 0.03)
1.1.2 Matched
Bisleri; 2016 8.6% 0.07 [0.00, 1.29]
Navia; 2011 29.3% 0.58 [0.12, 2.76]
Subtotal (95% CI) 37.8% 0.29 [0.04, 2.00]
Total events
2
2
2
Heterogeneity: Tau = 0.78; χ = 1.56, df = 1 (P = 0.21); I = 36%
Test for overall effect: Z = 1.25 (P = 0.21)
Total (95% CI) 100.0% 0.33 [0.14, 0.77]
Total events
2
2
Heterogeneity: Tau = 0.00; χ = 2.18, df = 3 (P = 0.54); I = 0%
2
0.1
10
Test for overall effect: Z = 2.57 (P = 0.01) 0.005 Favours [ERAH] 1 Favours [ORAH] 200
2
Test for subgroup differences: χ = 0.00, df = 1 (P = 0.95); I = 0%
2
Figure 2. Forest plot of wound infection in endoscopic radial artery harvest (ERAH) vs. open radial artery harvest (ORAH)
The RA offers a decreased risk of atherosclerosis and post-operative complications compared to other graft
options like venous grafts. ORAH has a higher risk of wound infection with a larger scar but a shorter
harvest time and is easier to learn. ERAH is feasible in all patients when performed by skillful personnel,
has fewer arm complications, and provides a higher patient satisfaction with better cosmetic results but
takes a longer time to perform when compared to ORAH [58,59] The post-operative cardiac complications and
outcomes remain comparable in the two approaches.

DECLARATIONS
Authors’ contributions
Wrote the paper, created figures for paper: Naik A
Idea generation, helped in writing: Rahouma M
Author for different parts of paper: Rahouma M, Spadaccio C, Khan F
Reviewed and edited of paper: Spadaccio C, Mehta K, Baudo M, Kamel M, Khan F, Hameed I, Wingo M,
Ruan Y, Abouarab A, Hossny M, Girardi LN, Gaudino M
Helped with review of figures and tables: Mehta K
Made table for paper: Baudo M

Availability of data and materials
Data and materials used to help write this article are available for public access.

Financial support and sponsorship
None.

Conflicts of interest
All authors declared that there are no conflicts of interest.

Ethical approval and consent to participate
Not applicable.