The scores of Ramsay Sedation Scale in group S at AH @ , @ , @ , @ , and @ were respectively ( @ @ ) , ( @ @ ) , ( @ @ ) , ( @ @ ) , and ( @ @ ) points , which were higher than those in group DS -LSB- ( @ @ ) , ( @ @ ) , ( @ @ ) , ( @ @ ) , and ( @ @ ) points , with t values from @ to @ , P values below @ -RSB- .