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1、麻 疹 Measles第十章第一节（1）中南大学儿科学教研室*1麻疹目的要求熟悉麻疹的病因、流行病学及发病机制掌握麻疹早期诊断要点及典型临床经过熟悉其它类型麻疹的临床表现熟悉麻疹常见并发症掌握麻疹与其它发疹性传染病的鉴别要点掌握麻疹的防治原则及方法Date2麻疹概 述(overview)麻疹是一种由麻疹病毒引起的急 性呼吸道传染病(Measles is an acute respiratory contagious disease caused by measles virus )Date3麻疹概 述(overview)临床特征为：发热、上呼吸道炎症、结 合膜炎、Koplik斑及全身性斑丘疹
2、(clinical features: fever,upper respiratory inflammation, conjunctivitis, Kopliks spots and generalized maculopapular rash)Date4麻疹病 原(ETIOLOGY)麻疹病毒(measles virus)属副粘液病毒，无亚型，仅一种抗原型 ( RNA-containing virus of the Paramyxovirus family ,only one serotype)Date5麻疹病 原(ETIOLOGY)麻疹病毒(measles virus)麻疹病毒不耐热，对日光
3、和消毒剂均敏 感，但在低温中能长期保存(Measles virus are rapidly inactivated by heat,light , and all kinds of desinfectant,but can be stored indefinitely at low temperature)。Date6麻疹病 原(ETIOLOGY)麻疹病毒(measles virus)存在于患者前驱期和出疹期的眼结膜、 鼻、咽、气管等分泌物中(During the prodromal period and eruption period,it is found in sections of c
4、onjunctiva, nose , pharynx ,trachea and so on)。Date7麻疹麻疹的发病机制鼻、咽 短期繁殖 病毒 局部粘膜 血流 远处器官 单核眼结膜 （第一次） 巨噬细胞 系统潜伏期 大量繁殖 局部症状 血流 （第二次） 前驱期 全身症状Date8麻疹病理(PATHOGEY)全身淋巴组织增生，有多核巨细胞形成(Hyperplasia of all lymphoid tissue usually occurs,multinucleated giant cells may be found )Date9麻疹病理(PATHOGEY)n多核巨细胞(multinucle
5、ated giant cells)：多个 巨噬细胞融合形成的具有核内外包涵体的巨细胞n网状内皮巨细胞也称华-佛细胞（ reticuloendothelial giant cells or Warthin- Finkeldey cells)：存在于全身淋巴组织和肝、脾 等脏器中n上皮巨细胞（epithelial giant cells）：主要位于 皮肤、眼结合膜、呼吸道和消化道粘膜等处 Date10麻疹病理(PATHOGEY)n皮肤、眼结合膜、鼻咽部、支气管、肠道粘膜等 处可见单核细胞增生及围绕在毛细血管周围的多 核巨细胞，淋巴样组织肥大(Prolifieration of mononuclea
6、r cells is found in the skin,in the conjunctivae and in the mucous membranes of the nasopharynx, bronchi, and intestinal tract,multinucleated giant cells occur around the capillaries. Hyperplasia of lymphoid tissue occurs.)Date11麻疹病理(PATHOGEY)颊粘膜下层的微小分泌腺发炎，其病变内有浆液 渗出及内皮细胞增殖形成Koplik斑(An inflammatory
7、reaction occurs in the fine secretor of the buccal mucosa, where serous exudate and proliferation of endothelial cells result in Kopliks spots) Date12麻疹病理(PATHOGEY)n麻疹引起的间质性肺炎为Hecht巨细胞肺炎 (Interstitial pneumonitis resulting from measles virus takes the form of Hecht giant cell pneumonia)Date13麻疹病理(PA
8、THOGEY)n麻疹皮疹的病理改变：真皮毛细血管内皮增生 、血浆渗出、红细胞相对增多形成淡红色斑丘疹 (Maculopapular rash consists of proliferation of capillary endothelial cells in skin,serous exudate and relative increase of red cells)n疹退后，表皮细胞坏死、角化形成脱屑。n皮疹处红细胞裂解，疹退后形成棕色色素沉着 。Date14麻疹典型麻疹(Typical measles)潜伏期(Incubation stage) 一般为1014天(亦可短至1周)，此 期可
9、有轻度体温上升(It lasts usually 1014 days after contact,maybe as short as 1 week.The temperature may increased slightly)。 临床表现Date15麻疹典型麻疹前驱期 (Prodromal stage)指从发热至出疹,一般为3-4天(from fever to rash appearance,usually lasts 3-4 days)临床表现Date16麻疹典型麻疹主要表现：发热、上呼吸道炎症、眼结合膜炎、Stimson线(fever,upper respiratory inflammat
10、ion, conjunctivitis ) 麻疹粘膜斑(Kopliks spots)前驱期 (Prodromal stage)临床表现Date17麻疹Kopliks spots (麻疹粘膜斑) 时间：发疹前24 48小时出现(24-48 hours before the appearance of the rash) ； 位置：开始对着下臼齿的颊粘膜上；以 后累及整个颊部并蔓延至唇部粘膜 (initially opposite the lower molars but may spread the rest of the buccal and lip mucosa)。临床表现Date18麻疹K
11、opliks spots (麻疹粘膜斑)形态：直径约1的灰白色小点，外有 红晕(grayish white dots with 1mm in diameter,usually as small as grains of sand,that reddish areolae)； 发展：1天内很快增多，皮疹出现后逐 渐消失(They spread rapidly within one day and disappear gradually after the appearance of the rash)。临床表现Date19麻疹Date20麻疹典型麻疹出疹期 (eruption stage) 在发
12、热3-5天后出现,持续3-5天出疹顺序:耳后、发际额、面部颈躯干四肢,达手掌、足底 (initially occurring behind the ears and hairline and spreading down from the forehead and faceto neck ,the trunk and the extremities).临床表现Date21麻疹典型麻疹出疹期 (eruption stage) 皮疹性质:红色斑丘疹，疹间皮肤 正常(red maculupapular rash, there is normal skin among rashes.)临床表现Date
13、22麻疹Date23麻疹典型麻疹恢复期 (convalescent period) 皮疹按出疹先后顺序消退,伴有糠麸样脱 屑及棕色色素沉着,经710天消失(The rash fades downward in the same sequence in which it appeared .As the rash fades , branny desquamation and brownish discoloration occur and then disappear within 7-10 days)临床表现Date24麻疹并发症(complications)肺炎(pneumonia) 是麻
14、疹常见的并发症，多见于出疹 期，继发细菌或其它病毒感染喉、气管、支气管炎 (laryngitis,trachitis, bronchitis)心肌炎(myocarditis)Date25麻疹并发症(complications)麻疹脑炎及亚急性硬化性全脑炎（ measles encephalitis and subacute sclerosing panencephalitis 简称SSPE)结核病恶化(tuberculosis exacerbating)营养障碍与维生素A缺乏症(malnutrition and vitamin A deficiency)Date26麻疹诊 断 (DIAGNOS
15、IS)麻疹接触史(exposure to measles previously)典型临床表现(typical clinical manifestations)Date27麻疹诊 断 (DIAGNOSIS) 前驱期鼻咽部找多核巨细胞及尿中 检测包涵体细胞(During the prodromal stage, multinucleated giant cells are found in nasopharynx,intrancuclear and intracytoplasmic inclusion bodies cells are found in urine)Date28麻疹诊 断(DIAG
16、NOSIS)ELISA法检测麻疹抗体(Measles virus antibodies become detectable by ELISA when the rash ppears;testing of acute and convalescent sera shows the diagnostic seroconversion or fourfold increase in titer)Date29麻疹鉴别诊断 病原全身症状和其他 特征皮疹特点发热发热 与皮疹 的关系麻疹 (rubeola)麻疹 病毒卡他症状 结结膜炎、发热发热 Koplik斑红红色斑丘疹，特 别别的出疹顺顺序， 退疹后有色素
