【例1】男,第三胎第二产,双胎中之大者。因其母患妊娠中毒症而于孕35~+周行剖宫产娩出。单卵双胎。哭声稍弱。出生体重2,300克。于生后1小时发现面色苍白转入儿科。体检:早产儿外貌,体温35.9℃,心率112次/分,呼吸70次/分。面色及全身皮肤均较苍白,无明显水肿。巩膜皮肤无黄染。前囟1×1厘米,平软。心音较弱,规则,未闻杂音。两肺未闻罗音。腹软,肝、脾未触及。吸吮反射存在,拥抱反射(±)。查末梢血血红蛋白为9.9克％,网织红细胞9.2％。经输血、保暖等治疗,于生后20天查血红蛋白为12.9克％,网织红细胞1.7％,痊愈出院。【例2】男,双胎中之小者,系例1之弟。出生体重3,000克,生后哭声响,面色及周身皮肤紫红色,未见黄染 [Example 1] male, third child second child, the big twin. Because of their mother suffering from gestosis and pregnancy 35 ~ + weeks cesarean delivery. Single egg twins. Crying weaker. Birth weight 2,300 grams. 1 hour after birth found pale to pediatric. Physical examination: appearance of premature children, body temperature 35.9 ℃, heart rate 112 beats / min, breathing 70 beats / min. Pale skin and body are pale, no significant edema. Scleral skin without yellow dye. Anterior fontanel 1 × 1 cm, flat and soft. Heart sounds weak, rules, no unheard noise. Two lungs did not hear rales. Abdominal soft, liver, spleen not touched. Sucking reflex exists, hug reflex (±). Check the peripheral hemoglobin 9.9%, reticulocytes 9.2%. After transfusion, warm and other treatment, 20 days after birth, hemoglobin check 12.9 grams, reticulocyte 1.7%, discharged. [Example 2] Male, the twins in the small, the case of 1 brother. Birth weight of 3,000 grams, crying after birth, complexion and whole body skin purple, no yellow dye