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Automated Collection of Leukoreduced Double Red Blood Cell Units suing an Alyx Apheresis Device
배인철,이경애,이종한,백은정,김현옥 대한임상병리사협회 2008 임상수혈검사학회 발표자료집 Vol.10 No.1
Background: Automated collection of leukoreduced double red blood cell (RBC) units has been used to improve blood collection efficiency in many countries. The aim of this study was to evaluate leukoreduced double RBC unit collection using apheresis and to determine its clinical uses. Methods: Automated leukoreduced double RBC units were collected from 17 healthy male volunteers using an Alyx apheresis device CBaxter, DeerWeld, IL). Our institutional criteria for male donors were as follows: height 2 170 cm, weight 2 70 kg, and hemoglobin 2 14.5 g/dL. Each donor``s complete blood count (CBC) was determined before and after the apheresis procedure. In order to validate the final leukoreduced double RBC units, white blood cell (WBC) counts were measured manually using a Nageotte chamber. Results: Leukoreduced double RBC units were collected in an average of 27±7 min, without specific donor reactions. The average volume of one unit of leukoreduced RBCs was 281±6 mL. Each donor``s hemoglobin (P<O.OOl) and hematocrit (P< 0.001) were significantly lower after donation, though WBC and platelet counts were no different. No residual WBCs were found in the leukoreduced, filtered product upon Nageotte chamber counting. Twenty-eight units of leukoreduced RBCs from 14 donors were transfused to patients who required leukoreduced RBCs, without specific transfusion reactions. Conclusion: The Alyx apheresis device allowed for safe and effective collection of leukoreduced double RBC units from a single donor. Automatically collected leukoreduced double RBC units were transfused to patients for the first time in Korea.
裵寅喆 서울大學校 保健大學院 1975 公衆保健雜誌 Vol.12 No.1
A survey on 6.631 (Boys: 3.338, Girls: 3.293) primary, middle and high school students was conducted for assessing their physical growth and development from 1st to 17th May 1974, and the following results were obtained. 1. Physical Growth and Development a) Rapid growth has been observed among boys in age 11∼15 and 10∼14 of girls. b) Physical growth and developments such as height, weight, chestgirth and sitting height among female students were superior to those among male students in ages 11, 12, 13 and 14. c) The maximum annual growth velocities were as followings: Height: Boys-7.4㎝ from 13 to 14 years of age Girls-11.1㎝ from 11 to 12 Weight: Boys-6.5㎏ from 14 to 15 years of age Girls- 6.7㎏ from 11 to 12 Chestgirth: Boy-4.4㎝ from 14 to 15 years of age Girls- 6.0㎝ from 11 to 12 sitting height: Boys-4.0㎝ from 14 to 15 years of age Girls- 5.1㎝ from 11 to 12 The greatest individual differences in growth and development were observed also during maximum growth age. d) Increases of physical conditions during 6~17 years of age in comparison with those in age 6were as followings: Height: Boys-53.3㎝ (46.6%), Girls-42.2㎝ (37.1%) Weight: Boys-38.5㎏ (196.4%), Girls-32.5㎏ (170.2%) Chestgirth: Boys-29.0㎝ (51.2%), Girls-25.7㎝ (46.1%) Sitting height: Boys-26.0㎝ (39.8), Girls-21.6㎝ (33.6%) e) Physical conditions of Korea students were inferior to those of Japanese Students in all ages, specially in adolescence. f) The students of growth of recent Seoul students show remarkably improved comparing with those of 1966 and 1967. 2. Various Indices in relation with physical growth and development a) Relative body weight has been increased steadily during 6∼15 age group of boys and 6∼14 of girls. And the crossing point of boys and girls appeared at age 10 at which girls surpassed and at 15, boys surpassed girls. b) Relative chestgirth showed narrow chest style in boys from 6 to 15 and from 6 to 13 in girls and the chest style of the students of the higher ages showed normality. c) The students in Seoul demonstrated their superiority in relative sitting height except ages 12 in boys and 8, 12 in girls. The average relative sitting height was 54.5 in boys and 55.0 in girls. d) The Rohrer index was 1.16∼1.31 in boys and 1.15∼1.36 in girls. It was superior to that of 1966. e) The Kaup index was lower than 2.0 in boys during ages 6∼16 and 6∼14 girls. The crossing point of boys and girls was appeared at age 10 and after age 11 the index in girls was continuously superior to that of boys.