Less than 30 % of the patients achieved hemostasis within 30 seconds in the hemostatic sponge group ; approximately 50 % of the patients in the simple LED irradiation group achieved hemostasis within 30 seconds ; and 86.7 % of the patients in the LED and hemostatic sponge combined group achieved hemostasis within 30 seconds , indicating that combined treatment with LED and hemostatic sponges provided a significantly higher hemostasis than in the hemostatic sponge group ( P < .01 ) .