Table 2: Studies comparing dilatation methods for bleeding.

Study Intervention Bleeding
Frattini, et al. [18] One-step vs. Alken One step lower bleeding
Amjadi, et al. [19] One-step vs. Alken One step lower bleeding
Falahatkar, et al. [20] One-step vs. Alken One step lower bleeding
Aminsharif, et al. [21] One-step vs. Alken One step lower bleeding
Ozok, et al. [10] Alken vs. Amplatz No statistically significant difference
Hijazi, et al. [9] Alken vs. Amplatz No statistically significant difference
Nalbant, et al. [3] Amplatz vs. Alken vs. Balloon No statistically significant difference
Frattini, et al. [18] Balloon vs. Alken Balloon higher bleeding (statistically significant)
Wezel F, et al. [11] Balloon vs. Alken Balloon higher bleeding (statistically significant)
Lopes T, et al. [4] Balloon vs. Alken Balloon higher bleeding (statistically significant)
Yamaguchi A, et al. [15] Balloon vs. Alken Balloon higher bleeding (statistically significant)
Şafak M, et al. [6] Balloon vs. Amplatz Balloon lower bleeding (Not statistically significant)
Gönen M, et al. [17] Balloon vs. Amplatz Balloon lower bleeding (Not statistically significant)
Davidoff, et al. [16] Balloon vs. Amplatz Balloon lower bleeding (Not statistically significant)