The occurrence of falling asleep while empty during an infusion is not a cause for undue concern and usually does not cause significant clinical symptoms or have any health implications. In most cases, falling asleep causes blood to enter the infusion tube due to the pressure in the vein, but this usually stops on its own after a few milliliters of blood have entered. Due to gravity, no more blood will enter the infusion tube, so it will not cause any other side effects such as anemia. However, sometimes a small amount of air bubbles may enter the bloodstream unnoticed before the infusion is emptied, for which there is no need to worry. For a person weighing 50 kilograms, at a rate of 0.2 milliliters of air per kilogram of body weight, that is, a total of 10 milliliters of air, it does not usually cause any effects on human health. Also, when this air enters the bloodstream, it is rapidly absorbed into the bloodstream without causing long-term complications. However, in order to prevent this situation from recurring, it is important to increase one’s concentration and not fall asleep during the infusion to avoid other unforeseen circumstances.