青蒿琥酯皮肤擦剂在小鼠和兔体内的药代动力学研究

将青蒿琥酯溶于苯二甲酸二甲酯,加适量氨酮制成皮肤擦剂。给兔脱毛后,皮肤涂抹此擦剂25mg/kg后,血药浓度达峰时间平均为2 h,峰浓度平均为1.80μg/ml。药物在兔体内平均驻留时间为3.54 h,清除半衰期约为2.46 h。给小鼠脱毛皮肤涂抹擦剂6.7,31.3和71.4 mg/kg,血药浓度在给药后0.5～4 h达高峰,峰浓度分别为0.82,2.05和7.11μg/ml,体内药物平均驻留时间为3.39,2.79及3.54 h,清除半衰期为2.35,1.93及2.45 h。可见,给兔及小鼠皮肤擦剂后,青蒿琥酯吸收良好,血药浓度维持时间较长。     

A study of 10 cases of velopharyngeal incompetence treated by flap pharyngoplasty

Velopharyngeal incompetence (VPI) is a condition of incomplete closure of V.P. port area, normally formed by velum and posterior pharyngeal watt. The condition primarily results in various types of speech defects, which form- the main complaint of the patient. We have studied 10 cases of VPI due to various causes and the speech improvement obtained by flap pharyngoplasty procedures. The results have been evaluated with a follow-up of six months. Highly encouraging results only indicate a more frequent need to undertake such surgery without any hesitation if the ENT surgeon is familiar with and has an adequate exposure to this simple and effective procedure.     

印度结核病流行病学:综述

印度的结核病形势可以用高患病率、高发病率高传染率来描述。自二十世纪50年代以来在印度不同地区进行的疾病监测报告显示:涂阳肺结核患病率为0.6-7.6/1000,培阳肺结核患病率为1.7-9.8/1000,培阳和/或涂阳结核患病率为1.8-12.7/1000。从已进行的有限的研究资料分析,涂阳肺结核的发病率在1.0-1.6/1000之间,培阳肺结核发病率在1.0-2.5/1000之间。根据不同时期在不同地区进行的结核菌素监测估计,结核年感染率(ARTI)为1-2%。在2000-2003年进行的全国范围研究估计,平均ARTI为1.5%。多数在第3级卫生保健中心进行的研究显示在结核病例中人类免疫缺陷病毒(HIV)血清阳性率在增加,不同研究的结果介于0.4%-28.8%之间。新病例中耐多药(MDR)率相对较低,约0.5-5.3%之间。但在复治病例中MDR为8%-67%。     

Oral clonidine pretreatment for haemodynamic stability during craniotomy.

We have studied the effect of clonidine pretreatment on cardiovascular responses to various stimuli during craniotomy. Fifty-eight patients (ASA Class I-II), scheduled for supratentorial surgery, were randomly given either oral clonidine, mean dose 3.6 micrograms/kg (n = 28), or oral diazepam, 0.2 mg/kg (n = 30), ninety to one hundred minutes before surgery. Anaesthesia was induced with thiopentone and maintained with nitrous oxide:oxygen, pentazocine and halothane. Pancuronium was used as a neuromuscular blocker. Mean arterial pressure and heart rate were recorded before and after several stimuli. In the clonidine group hypertensive response was significantly less on laryngoscopy (6.5% increases versus 11.2% in the diazepam group), intubation (9.2% versus 16.5%), Mayfield clamp application (14.5% versus 29.91%) and after skin infiltration with lignocaine-adrenaline solution (2.95% versus 5.42%). Heart rate response to laryngoscopy, intubation and skin infiltration was also significantly attenuated in the clonidine group. The sleep dose of thiopentone was smaller in patients pretreated with clonidine. Patients in the diazepam group required more medical intervention. No adverse effect occurred in any patient.