ObjectiveTo investigate the effects on QT dispersion in patients who received maintenance hemodialysis by dialysate with different concentration of potassium. MethodsTook 57 patients who received maintenance hemodialysis as dialysis group, took another 30 healthy subjects as control group, patients in dialysis group alternatively received hemodialysis by dialysate with potassium concentration of 2.0mmol/L and 3.0mmol/L once. QT interval of both groups were recorded by 12-lead synchronized ECG and then QT dispersion and QTcd were calculated. ResultsQTd and QTcd of dialysis group were(52.7 ±8.2) and(63.2 ±9.0)ms respectively and which were significantly higher than control group, the difference between groups was statistically significant( t =2. 638,2. 750, both P ＜ 0.05 ) ; QTd, QTcd and the incidence of arrhythmia of 2.0mmol/L K + group were ( 63.5 ± 7.6), ( 72.3 ± 8.0)ms and 22.8％ ( 13/57)respectively and which were all significantly higher than 3.0mmol/L K + group,the differences between groups were statistically significant ( t =2. 245,2.351, x2 =5. 599, all P ＜ 0.05 ). ConclusionQT dispersion reflectsed the heterogeneity of ventricular repolarization and electrical instability,and the use of dialysate with potassium concentration of 3.0mmol/L could shorten QT interval and reduce the incidence of arthythmia.

The results of observation on experimental photolocalization and photochemotherapy with a new drug photocarcinorin (PsD-007) and argon laser (514.5+ 488nm) for different transplanted animal tumors are reported.The interrelationship among the dose of light irradiation,dose level of the drug and the efficiency of experimental photodiagnosis and photochemotherapy for animal tumors was studied.It has been shown that the degree of photodynamic damage on tumors is proportional to the light dose.The upper and lower thresholds of effective light-dose seem to be about 150 mw/cm2 and 40 mw/cm2 for 30 min respectively.The light dose for curing half of experimental animals ranged from 80 to 100 mw/cm2 for 30 min with a drug dose of 5mg/kg.The photodynamic damage on tumors in closely correlated to drug dose with a given light dose.The photodynamic effects on different tumors are essentially consistent with each other.A bright oranged-red fluorescence appeared on the fumor tissues of S180 sarcoma,Lewis lung carcinoma or U14 cervical carcinoma bearing mice on exposure to argon laser and/or UV light (365nm) 24 and 48 h after the injection of 5mg/kg of PsD-007.But no fluorescence was found on the normal tissues around the tumors under the same conditions.It is suggested that PsD-007 may be specifically uptaken into the malignant tissues.The intensity of fluorecence on tumors is directly proportional to drug dose and inversely proportional to the time interval between drug administration and observation on the fluorescence.The homogeneity of distribution of light energy was improved by using a "lens aperture" placed between the light source and irradiated animal.A model system was thus provided for the evaluation of the efficiency of drugs in the photochemodiagnosis and photochemotherapy for animal tumors.

Extracapsular cataract extraction (ECCE) with primary posterior chamber intraocular lens (IOL) implantation was performed on 31 cases (38 eyes)of cataract with high myopia of axial length over 26mm and preoperative retinal visual acuity of ≥0.5. They were followed up for 3～26 months. Postoperative visual acuity s. c. was ≥0.5 in 65.8％ of the eyes and visual acuity c.c. was ≥0.5 in 92.1％ and 1.0～1.5 in 52.6％ of the eyes. The results showed that it was fairly possible for cataract patients with high myopia to obtain normal vision after ECCE and IOL implantation when the preoperative retinal acuity was ≥0.5. The calculation of lens power and surgical procedures were described, and the indications for the operation and the managements of complications were discussed as well.

Objective To discuss the effect of psychological intervention in relieving anxiety and depression of patients with ocular injuries caused by automotive air bag.Methods.34 patients with ocular injuries caused by automotive air bag were selected and divided into the intervention group and the control group with 17 patients in each group.The control group adopted routine intervention,while the intervention group was given psychological intervention,including music therapy,Beck's cognitive therapy and before-discharge education.Self-rating anxiety and self-rating depression scale were used to evaluated the psychological status of patients at admission and one day before discharge.Results Incidence of anxiety and depression significantly decreased in the intervention group after intervention.Score of anxiety and depression reduced after intervention in the intervention group,also evidently lower than that of the control group.Conclusions Psychological intervention can relieve anxiety and depression of patients with ocular injuries caused by automotive air bag.

The incidence and prevalence of pancreatic cancer have been steadily increasing globally and domestically. The common risk factors of pancreatic cancer include diabetes mellitus, chronic panereatitis, cigarette smoking, family history of pancreatic cancer, and alcoholism. There is no specific symptom and early diagnostic marker of pancreatic cancer. CA19-9 is the most commonly used serum marker for the detection and follow-up of pancreatic cancer. However, its sensitivity and specificity precluded its use in screening of the disease. Enhanced spiral CT scan is the routine radiological modality for the diagnosis and staging of pancreatic cancer. Newly developed diagnostic modality such as ultrasound contrast imaging, endoscopic ultrasound, PET/CT scan further improved the sensitivity and specificity of diagnosis. Preoperative fine needle aspiration (FNA) is not recommended for patients with resectable pancreatic cancer. Pathological confirmation by FNA is necessary for patients who will be treated by chemotherapy or chemoradiotherapy. Preoperative staging laparoscopy can rule out the patients with abdominal seeding, so that unnecessary open surgery is avoided. In order to achieve better survival, every effort should be made to achieve R_0 resection for patients with stage Ⅰ or Ⅱ disease.

About 20％-30％ of pancreatic neuroendocrine neoplasms (pNENs) are resectable after the initial diagnosis,and about 70％-80％ of pNENs are locally advanced or metastatic tumors.For resectable pNENs,primary and metastatic lesions are suggested to be resected,and for locally advanced or metastatic functional tumors,debulking surgery is encouraged for controlling the symptoms and alleviating the life quality; debulking surgery could not improve the overall survival of patients with non-functional neuroendocrine tumors,unless there are lifethreatening complications such as bleeding or obstruction.For type Ⅰ liver metastasis,simultaneous resection of primary and metastatic lesions is advised; while for type Ⅱ liver metastasis,systemic treatment combined with local treatment (radio-frequency ablation,transcatheter arterial chemoembolization and transartery embolization) is effective; for type Ⅲ liver metastasis,target therapy such as Sunitinib,Everolimus combined with long acting Sandostatin is effective.No adjuvant therapy is needed after radical resection of pNENs,while following therapy is suggested for patients after metastatic pNENs resection.

Objective To investigate the iodine nutritional status of pregnant women during different pregnancy of Zhuhai area in 2013 .Methods Adoption iodine arsenic cerium catalytic reaction principle ,Hitachi 7600‐020 automatic biochemical analyzer was used to detect the concentration of urinary iodine .Results To detect the urine iodine of 2 214 cases of pregnant women whose con‐form the conditions ,iodine deficiency were found up to 1 421 cases ,accounting for 64 .19% ;Iodine qualifiers were found up to 767 cases ,accounting for 34 .64% ;Excess iodine people were found up to 26 cases ,accounting for 1 .17% .Conclusion The iodine defi‐ciency situation is more severe of pregnant women in Zhuhai area ,we should intensify propaganda it and it should be included in the routine monitoring of prevention .When a pregnant woman was abnormal urine iodine level in monitoring ,we should give the iodine nutrition health prescription guidance to them ,so as to continuously improve the qualification rate of pregnant women urine iodine level .

Neuroendocrine neoplasm (NENs) is a kind of rare tumor which occurs in multiple human organs.The prognosis of NENs is relatively good,but the diagnosis and treatment of NENs is complicated and involve different specialties.In major medical centers,comprehensive and standard diagnosis and treatment could improve the prognosis of NENs and reduce the waiting and treatment time via multidisciplinary team (MDT) model.The regional variation and differences in the techniques among hospitals are decreasing through communication and learning among the members of MDT.Recently,the excellent MDT is working in a spirit of cooperation and sharing to create the patients-centered model,with professional doctors and complete hardware facilities.The NENs clinical center needs to strengthen diagnosis,treatment,research and training.

Objective To investigate the effect of budesonide suspension combined with terbutaline on the ventilator-associated pneumonia (VAP) and rehabilitation in patients undergoing thoracic surgery. Methods Fifty-five patients underwent thoracic surgery from June 2006 to January 2017 in our hospital. The patients were treated with budesonide suspension combined with terbutaline atomization solution for inhalation. Forty patients with thoracic surgery were selected as the control group. Comparison of the two groups after the blood gas indicators, the incidence of VAP, mechanical ventilation and hospital stay. Results There was no significant difference in white blood cells, neutrophils and CRP between the two groups.The oxygen saturation of the observation group was higher than that of the control group, the arterial oxygen partial pressure was higher than the control group, PaCO2 was lower than the control group, the difference was statistically significant (P<0.05). The VAP of the observation group was lower than that of the control group. The time of mechanical ventilation was shorter than that of the control group. The hospitalization time was shorter than that of the control group, the difference was statistically significant (P<0.05). Conclusion The combination of budesonide suspension and terbutaline atomization can improve the postoperative effect of thoracic surgery and reduce the incidence of postoperative VAP and promote the early rehabilitation of patients.

The incidence of pancreatic neuroendocrine tumors is increasing in recent years. Scientific treatment strategy will improve the prognosis of patients. Surgical resection is the main treatment for pancreatic neuroendocrine tumors, especially for localized tumors. At present, there are still controversies about the treatment of pancreatic neuroendocrine tumors at home and abroad. Based on the literature and clinical practice, the author combs the related controversies and suggests that the age, physical condition, tumor location, staging, grading and functional status of the patients should be taken into consideration when making the surgical plan. The individualized treatment of pancreatic neuroendocrine tumor should be realized according to the specific situation of the patients and the evidence-based medicine.