OBJECTIVE:To study the identification problems of pharmacokinetic compartment models.METHODS:Problems of the identification of classical compartment models in single administration were systematically discussed by Laplace transformation method.RESULTS:The classical compartment models in single administration don't have the character of u-niqueness and the identification for which is a problem.CONCLUSION:The drug level in plasma and the concentration of drugs that distributed in organs were in a direct ratio under the condition of two kinds of unidentifiable classical compartment models,in that case,it has theoretic bases and significance to predict the concentration of drugs that distributed in organs or target organs by means of determining the drug concentration in plasma;if on the other hand,if two kinds of classical com-partment models are identifiable,the drug level in plasma and the concentration of drugs that distributed in organs or target organs wouldn't be in a proportional relationship,in this case,it is advisable to make sure the relationship between the drug le_ vel in plasma and the concentration of drugs that distributed in organs or target organs before predicting drug concentration that distributed in organs or target organs by means of monitoring the drug concentration in plasma;otherwise,it is baseless and meaningless.

Objective To study the effect of early rehabilitation on motor function of hemiplegic patients after cerebral infarction. Methods Forty two patients were divided into two groups randomly: a rehabilitation group and a control group. Both groups were given the same internal medical treatment to stabilize the patients conditions in the early stage. In addition, the patients in the rehabilitation group were given early formal rehabilitation training, while those in the control group were given no formal rehabilitation training. The results of therapy were assessed by using SIAS method (Stroke Impairment Assessment Set). Results As shown by the SIAS result, the scores of motor function, muscle tone, range of motion (ROM), pain, trunk control and function on the unaffected side in the rehabilitation group were significantly better than those in the control group (all P

Non-vascular interventional diagnostic methods of thyroid nodules include ultrasonography-guided fine-needle aspiration cytology(USgFNAC)and ultrasonography-guided core-needle biopsy(USgCNB).USgFNAC is a practical method used to select and to guide the treatment of various thyroid nodules, however, it is difficult to make a differentiation between benign and malignant lesions simply to rely on the findings of a small number of cells.USgCNB has the advantage of being able to obtain satisfactory specimen enough for making a histological diagnosis, although this procedure is contraindicated in some patients.Non-vascular interventional treatments of thyroid nodules include percutaneous ethanol injection(PEI) and ultrasonography-guided interstitial laser photocoagulation(USgILP).Both PEI and USgILP have fine effect on the benign thyroid nodules.Compared with PEI, laser-induced necrosis can be well controlled, thus, the adverse reactions, such as the formation of fibrosis adjacent to the nodule, vocal cord paralysis, etc.can be avoided.Non-vascular interventional treatments may cause some untoward effects.For the diagnosis and treatment of thyroid nodules, the non-vascular interventional procedure is simple, safe, effective and economic with less complications, therefore, this technique is worth being popularized in clinical practice.

corrected visual acuity and good visual quality are clinic effects standard of laser in situ keratomeleusis.Visual quality descending for patients after LASIK surgery depends on many factors.This review recommends analyses the influence of visual quality for patients after LASIK surgery and it's guiding significance to LASIK from seven sides,such as visual acuity,refactive diopter,contrast sensitivity,wavefront aberration,increment of Q-value,binocular visual function,the change of dominant eye.

Objective To observe the effect of intermittent and continuous blue light therapy for pathological neonatal jaundice,and to evaluate the prognosis of newborns.Methods 214 patients with pathologic neonatal jaundice who treated with blue light irradiation were slected,they were randomly divided into two groups according to the admission number combined with single and double numbers,107 patients in each group.Group A received continuous blue light irradiation treatment.Group B received intermittent blue light irradiation.The clinical efficacy and prognosis of children,blue light exposure time,serum total bilirubin (TBiL) recovery time,the hospitalization time and the adverse reactions during the treatment were observed.The levels of serum TBiLwere measured before and after light exposure 3,5 days.Results The total effective rate of group B was 97.18％ (104/107),which was higher than that of group A [90.65 ％ (97/107)],the difference was statistically significant (x2 =10.30,P ＜ 0.05).The time of blue light irradiation and hospital stay time of group B were (71.59 ± 7.05) d and (11.51 ± 1.23) d,respectively,which were significantly shorter than those of group A [(79.54 ± 6.82) d and (13.64 ± 1.18) d],the differences were statistically significant (u =11.42,9.87,all P ＜ 0.05).The level of TBiL of group B was (96.28 ± 10.25) μmol/L,which was significantly lower than (104.52 ± 10.31) μmol/L of group A (u =8.94,P ＜ 0.05).The incidence rate of adverse reactions in group B was 2.55％ (4/157),which was lower than that in group A [7.01％ (11/157)],the difference was statistically significant (x2 =9.66,P ＜ 0.05).The prognosis of neonatal in the two groups was good.Conclusion The intermittent and continuous blue light in the treatment of pathological neonatal jaundice has good clinical effect and the neonatal prognosis is good.The clinical efficacy of intermittent blue light irradiation is better,which can significantly shorten the treatment time and has higher safety.

Objective To observe and discuss the effect of using the self-made pressure reduction bilateral nasal oxygen tube to prevent the ear pressure sore for the comatose patients. Methods Totally 86 cases of comatose patients which needed permanent oxygen inhale admitted during Jan 2016 to Dec 2016 were divided into observation group and control group:Each group 43 cases. Observation group used self-made pressure reduction bilateral nasal oxygen tube to inhale the oxygen, control group used the conventional disposable bilateral nasal oxygen tube to inhale the oxygen and the pressure ulcer stage. Results There was no significant difference in Braden score in two groups, the difference was statistically significant (P>0.05) . Observed two groups patients′ nasal oxygen tube ear pressure sore situation, these were only 2 patients happened nasal oxygen tube ear pressure sore in observation group, on the contrary, these were 9 patients happened in control group, occulting probability was higher than observation group significantly. and the extend of the pressure sore is much serious than the observation. Difference was statistically significant (χ2=5.11, P<0.05). Conclusions During the privation of the nasal oxygen tube ear pressure sore for the comatose patients, self-made pressure reduction bilateral nasal oxygen tube can alleviate the ear skin pressure effectively, reduce the pressure sore occur, the effect is obvious, nursing quality is improved, deserve the clinical expansion.

OBJECTIVE To investigate the infectivity and drug resistance of Ureaplasma urealyticum(Uu) and Mycoplasma hominis(Mh),and instruct reasonable application of antibiotics clinically.METHODS Mycoplasma IST kit was used to detect Uu and Mh and their drug resistance.RESULTS The prevalence of Mycoplasma in males was 44.7%,in females was 46.0%.The resistance rate of Uu to ciprofloxacin,ofloxacin and(erythromycin) was(85.1%),47.1%,and 24.8%;the resistance rate of Mh to ciprofloxacin,ofloxacin and(erythromycin) was 76.9%,54.2%,and 54.2%,respectively.The sensitive rate of Uu to doxycycline,(pristinamycin) and josamycin was 95.5%,95.5%,and 91.3%;the sensitive rate of Mh to doxycycline,(pristinamycin) and josamycin was 95.8%,95.8%,and 91.7%,respectively.CONCLUSIONS To deal with the(infection) of Uu and Mh,the antibiotics such as doxycycline,josamycin and(others) which are sensitive to such strains can be used.Uu and Mh have a high(resistance) rate to quinolones,which should be paid high clinical(attention).

Objective To explore the clinical value of early diagnosis of ovarian cancer by serum lysophosphatidic acid(LPA) and CA-125.Methods 50 patients with ovarian cancer from October 2005 to February 2008 were selected as ovarian cancer group,at the same period selected 44 patients with ovarian benign tumor(ovarian benign disease group),and 50 healthy women as the healthy control group.All patients were diagnosed and confirmed by preoperative blood and pathology.The serum LPA and CA-125 of two groups were detected.Results The serum LPA level and the positive rate in the ovarian cancer group was higher than that of the ovaries benign group or the control group(P＜0.05).The CA-125 level in the ovarian cancer group was similar to that of the ovaries benign group(P＞0.05),while the CA-125 level in the ovarian cancer group or the ovaries benign group was higher than that of the control group(P＜0.05).The specificity of the LPA was better than that of the CA-125 detection.In the early diagnosis of ovarian cancer,the sensitivity of the combination(85.7%) was better than either of them(P＜0.01);the plasma LPA level and positive rate of CA-125 of the phase Ⅱ～Ⅳ ovarian cancer patients were higher than that of phase Ⅰ (P＜0.01);the CA-125 positive rate of the serious cystadenocarcinoma was higher than that of the cystadenocarcinoma(P＜0.01).Conclusion LPA is a sensitive biomarker for the early diagnosis of ovarian cancer,especially combined with CA-125.It should be widely used in clinic.

Objective To detect the level of the serum estradiol-2 (E_2), tumor necrosis factor-alpha (TNF- α) and vascular endothelial growth factor (VEGF) in patients with endometriosis (EMS) and explore their clinical significance. Methods Fifty-nine EMS patients from January 2006 to January 2009 were selected as EMS group and 60 normal women were selected as control group. The serum E_2,TNF-αand VEGF in EMS group 24 h pre-operation, 7 d post-operation and 6 months after operation were detected, and compared with control group. Results The levels of the serum E_2[(216.5 ± 59.7) ng/L],TNF- α [(30.4 ± 17.5) μg/L]and VEGF [(250.7 ± 88.7) ng/L]in EMS group pre-operation were significantly higher than those in control group [(100.2 ± 33.2) ng/L, (11.2 ± 3.6) μg/L, (103.2 ± 49.2) ng/L]and post-operation [(121.3±44.6) ng/L, (13.4 ± 6.2) μg/L, (153.9 ± 58.7) ng/L](P < 0.01). But there was no significant difference between control group and post-operation of EMS group (P > 0.05). The levels of the serum E_2 [(316.5 ± 77.6) ng/L],TNF-α [(51.1 ± 12.3) μg/L]and VEGF [(305.1±69.7) ng/L]with stage Ⅲ-Ⅳ in EMS group were higher than those in control group or those with stage Ⅰ - Ⅱ [(170.7±48.2) ng/L, (25.8 ± 10.1) μ g/L, (169.2 ± 36.1) ng/L](P < 0.05 or < 0.01). The levels of the serum E_2,TNF- α and VEGF with stage Ⅰ - Ⅱ in EMS group were also higher than those in control group (P < 0.05). Nine patients recurred at 6 months after the operation. The levels of the serum E_2[(187.8 ± 46.7) ng/L],TNF- α [(23.9 ± 9.5) μg/L]and VEGF [(185.3 ± 57.4) ng/L]of the recurred EMS patients stepped up significantly higher than those of the non-recurred EMS patients [(112.7±30.3) ng/L, (13.2±4.7) μg/L, (116.4±30.3) ng/L](P < 0.01). While there was no significant difference between control group and non-recurred EMS patients (P >0.05). Conclusions The serum E_2,TNF-αand VEGF may play important roles in the development of the EMS. And the detection of the serum E_2,TNF-αand VEGF is useful to judge the patient's condition and the prognosis of the EMS.

Endothelial progenitor cells (EPCs) are a precursor cell of endothelium that has the ability of differentiation and proliferation. In given conditions, EPCs can be mobilized to the ischemic tissue to participate in repairing the injured blood vessels and angiogenesis, and EPCs are regarded as a marker of vascular reparative capacity. Studies in recent years have indicated that the changes of EPC number play an important role in the occurrence and prognosis of cerebral ischemia. As a potential therapeutic strategy, EPCs may be used in ischemic cerebrovascular disease. This article reviews the application progress of EPCs in ischemic cerebrovascular disease.