Objective To assess the influence of dexmedetomidine on the recovery of pediatric patients after sevoflurane anesthesia. Methods Such databases as PubMed (1966 to March 2012), The Cochrane Library (Issue 1, 2012), EBSCO (ASP) (1984 to March 2012), Journals@Ovid Full Text (1993 to March 2012), CBM (1978 to March 2012), CNKI (1979 to March 2012), VIP (1989 to March 2012), and WanFang Data (1998 to March 2012) were searched to collect randomized controlled trials (RCTs) about the influence of dexmedetomidine on the recovery of pediatric patients after sevoflurane anesthesia, and the references of the included studies were also retrieved. Two researchers extracted the data and evaluated the methodological quality of the included studies independently. Then the RevMan 5.2 software was used for meta-analysis. Results A total of 16 RCTs involving 1 217 patients were included. The results of meta-analysis showed that, compared with the placebo, dexmedetomidine could reduce the occurrence of emergence agitation (OR=0.18, 95%CI 0.13 to 0.25, Plt;0.000 01) and increase the occurrence of postoperative lethargy (OR=0.14, 95%CI 0.03 to 0.68, P=0.01), but there were no differences in the occurrence of side effects including bronchospasm, bucking, breathholding, and oxygen desaturation. Dexmedetomidine could also reduce mean arterial blood pressure (MAP) and heart rate (HR) of pediatric patients during the recovery period after sevoflurane anesthesia, but it increased emergence time (MD=2.14, 95%CI 0.95 to 3.33, P=0.000 4), extubation time (MD=1.26, 95%CI 0.51 to 2.00, P=0.000 9) and the time of staying in PACU (MD=4.72, 95%CI 2.07 to 7.38, P=0.000 5). Conclusions For pediatric patients recovering from sevoflurane-based general anesthesia, dexmedetomidine can reduce the occurrence of emergence agitation, and is helpful to maintain the hemodynamic balance. But it prolongs emergence time, extubation time (or the time of using the laryngeal mask) and the time of staying in PACU, and increases the occurrence of postoperative lethargy.
Abstract： Objective To analyze the manifestation, treatment，outcome and potentially predisposing risk factors of perioperative thromboembolism after cavo-pulmonary connection, and to assess the effects of our prophylactic antithrombotic strategy. Methods Clinical data of 264 cases of bidirectional Glenn and 224 cases of total cavopulmonary connection （TCPC） operations undertaken from September 2005 to December 2010 in Fu wai hospital were retrospectively analyzed. Perioperative thromboembolic complications occurred in 9 patients. 5 of them were after bidirectional Glenn, 4 were after TCPC. Most of the 9 patients had at least one thrombi-related risk factor. The routine prophylactic antithrombotic therapy after these operations were intravenous infusion of heparin 10 U/（kg·h） initially, followed with oral aspirin 1-3 mg/（kg·d）. Results Thromboembolic events occurred within 7 days after the operation in 6 cases, appeared 2 to 4 weeks after the surgery in 3 cases. All 9 patients received anticoagulation with heparin. One patient also undertook take-down operation. 3 （33%） patients died, accounting for 33% （1/3）, and 18% （2/11） of the early deaths after bidirectional Glenn and TCPC operations. Clinical symptoms improved or disappeared in the remaining 6 patients. Conclusion The mortality of perioperative thromboembolic complications after cavo-pulmonary connection is high, consisting of the important cause of early deaths after these procedures. Our prophylactic anticoagulation strategy proved to be effective, though some thrombi-relatedrisk factors still need to be avoided.
Objective Inappropriate drug dosage is a serious problem in pediatrics, mainly due to the lack of clinical evidence in children, suitable preparation formulation, and standardized methods for dose adjustment. A method for evaluating and monitoring appropriate dosage in pediatrics is urgently needed. The drug utilization index (DUI) based on the Anatomical Therapeutic Chemical/Defined Daily Dose (ATC/DDD) has been widely used in the assessment of appropriate dosage in adults. We explored possible methods for assessing appropriate dosage in children. Methods Based on our previous studies, we discuss cDUI in the assessment of appropriate dosage in children as follows: the meaning of cDDD, the establishment of a standardized system, and the classified evaluation of dosage in pediatrics. Results Although the definition of cDDD draws on the concept of defined daily dose (DDD), the meaning of cDDD is different from that of the latter. Specifically, the purpose of cDDD is to evaluate appropriate pediatric dose, while DDD is a unit of measurement. cDDD could be used to assess dose rationality for common and serious pediatric diseases, and would be refined over time. A single cDDD should be assigned per drug and indication and given per drug and route of administration. The influence of age, weight, diagnosis, and administration route on the dosage should be considered. Classified evaluation should be used and weight should be given to the above mentioned factors in order to evaluate the appropriate dose objectively and comprehensively. Conclusion Dosage regulation in pediatrics has an important role in improving medical quality and protecting the safety, effectiveness, and economy of medical therapy in children. The establishment of a cDUI system is a good try in pediatric dosage evaluation. Although there are still defects within this proposed system and methodology, the principle seems feasible.
Objective To determine the extent of off-label drug use in Pediatric Wards of West China Second University Hospital in 2010 and analyze its risk factors, so as to provide baseline data for getting acquainted with the extent of off-label drug use in pediatrics in China, and for making policies of off-label drug use. Methods The proportionate stratified random sampling was conducted to select medical advice and discharge medication for hospitalized children in Pediatric Wards in 2010. According to drug instructions, the off-label drug use of prescriptions of all selected children was analyzed in the following aspects, the category of off-label drug use, age, category of drugs and wards. In addition, a logistic regression was done that modeled the odds of receiving an off-label prescription as a function of the following possible risk factors: age, sex and the rank of doctors. Results The total 749 children were selected, and 14 374 prescriptions involving 385 drugs were analyzed. The rate of off-label drug use was 98.00%, 78.96% and 88.05% in children, prescriptions and drug categories, respectively. The main categories of off-label drug use were no pediatric information (29.41%), indication (18.35%), dosage (17.61%) and dosage range (±20%) (13.52%). The top 2 age groups of off-label drug use were adolescents (83.56%) and children (80.58%). The top 4 drugs of off-label use were those for alimentary tract and metabolism (82.28%), anti-infectives for systemic use (75.06%), blood and blood forming organs (79.27%) and respiratory (58.27%). The top 2 wards of off-label drug use were Pediatric Hematology (88.27%) and Neonates (79.12%). In hospital, children, adolescents and male patients had higher risk factors of off-label drug use, and doctors with senior rank prescribed more off-label prescriptions than those with intermediate rank. Conclusion The off-label drug use in Pediatric Wards is common in West China Second University Hospital. On the one hand, drug instructions lack the pediatric information, and, on the other hand, it’s badly in need of developing relevant legislations, regulations or guidelines to regulate off-label drug use, in order to avoid doctor’s professional risks and ensure the safety of pediatric drug use.
Objective To determine the extent of off-label drug use in pediatric outpatients of West China Second University Hospital in 2010, and to analyze its possible risk factors, so as to provide baseline data for getting acquainted with the extent of off-label drug use in pediatrics in China and developing policy of off-label drug use. Methods The stratified random sampling was conducted to select prescriptions of children aged 0 to 18 years in pediatric outpatients of the West China Second University Hospital in 2010. According to drug instructions, off-label drug use of prescriptions of all selected children was analyzed in the following aspects, the category of off-label drug use, age, category of drugs. In addition, an analysis was conducted to check the relationship between off-label use and following possible risk factors: age, sex, essential medicines and over-the-counter drugs. Results A total of 2 640 prescriptions with 8 588 medical advices involving 329 drugs were extracted and analyzed, with incidence rates of off-label drug use accounting for 76.59%, 40.88% and 83.89%, respectively. The main categories of off-label drug use were no pediatric information (35.57%), indication (25.44%), and dosage (25.31%). The top 2 age groups with highest incidence rate of off-label drug were neonates (54.35%) and adolescents (49.64%). The top 4 drugs with highest incidence rate of off-label drug were respiratory system medicines (48.12%), Chinese patent medicines (48.12%), digestive and metabolic system medicines (33.36%), and systemic anti-infectives (16.27%). The off-label use risks in all age groups in the hospital were indifferent, and the essential medicines and prescription medicines were likely to present higher risks of drug off-label. Conclusion Off-label drug use in pediatric outpatients is common with growth trend in pediatric outpatients of the West China Second University Hospital. On the one hand, drug instructions lack pediatric information, and on the other hand, it’s badly in need of developing relevant legislation, regulations or guidelines to regulate off-label drug use, providing more evidence by conducting clinical trials on pediatric drugs, encouraging the development and production of the applicable drugs and dosage forms for children, and establishing the children essential medicine list, so as to avoid doctor’s professional risk and ensure the safety of pediatric drug use.
Objective To investigate the off-label prescriptions in pediatrics in West China Second University Hospital and to analyze the reasons and performance, so as to provide the baseline data for improving the rationality drug use in pediatrics in China. Methods The prescriptions of pediatrics outpatient department were randomly selected from May 2008 to April 2009; and the off-label use was analyzed according to the package inserts in the following aspects, the types of off-label use, the rate of off-label use in different age groups and categories of medicine. Results Of the total 2 400 prescriptions, 1 398 (58.25%) involving off-label use. All sample prescriptions contained 6028 records, 1 923 (31.90%) involving off-label use. The problems such as dosage (45.98%), frequency (21.17%) and age (18.19%) were the top-three types of off-label use. The rate in different age groups ranked as the top-three were school-age (61.56%), followed by preschool (60.77%) and infants (57.56). The top-five categories of medicines in off-label use were anti-allergy drugs (49.45%), digestive system drugs (49.32%), externally applied drugs (41.49%), Chinese patent drugs (34.60%) and nervous system drugs (33.78%). Conclusion The off-label drug use is widespread in pediatrics outpatient department. It is an effective approach to reduce off-label use and improve drug safety through strictly abiding by the instruction of usage and dosage as well as selecting a suitable dosage form.
Objective We aimed to determine the efficacy and complication of sevoflurane maintenance in children. Methods Trials were collected through electronic searches of MEDLINE, EBSCO, OVID, Springer, Foreign Journals Integration System, CNKI, and CMBdisk (from the date of building the database to April 2008). We also checked the bibliographies of retrieved articles. Results A total of 20 trials involving 1 592 patients were included. The Metaanalysis showed: ① Recovery time: sevoflurane was similar with propofol [WMD=0.22, 95%CI (–2.86, 3.30)], but slower than desflurane [WMD=5.01, 95%CI (2.87, 7.16)], and faster than isoflurane [WMD= –0.55, 95%CI (– 0.74, –0.37)]; ② Discharge time: sevoflurane was similar with propofol [WMD= –4.39, 95%CI (–10.02, 1.25)], desflurane[WMD=1.13, 95%CI (–3.25, 5.51)], and isoflurane [WMD= –8.17, 95%CI (–17.94, 1.60)]; ③ Postoperative agitation: sevoflurane was much more obvious than propofol [RR=5.53, 95%CI (2.99, 10.21)], but superior than desflurane [RR=0.55, 95%CI (0.35, 0.88)], and similar with isoflurane [RR=1.24, 95%CI (0.85, 1.800]; ④ Postoperative nausea and vomiting (PONV): sevoflurane was much more severe than propofol [RR=2.17, 95%CI (1.21, 3.90)], and no difference with desflurane [RR=0.88, 95%CI (0.61, 1.25)]; ⑤ Oculocardiac reflex: sevoflurane was less than propofol [RD= – 0.42, 95%CI (–0.56, –0.27)], and no difference with desflurane [RR=0.93, 95%CI (0.61, 1.41)]. Conclusion The limited current evidence shows no difference between sevoflurane and propofol in recovery time, while the effect of sevoflurane is faster than isoflurane and slower than desflurane. There are no differences among sevoflurane, desflurane, isoflurane, and propofol in discharge time. The incidence of postoperative agitation of sevoflurane is higher than that of propofol, but lower than that of other inhaled anesthetics. The incidence of PONV of sevoflurane is higher than that of propofol. The incidence of oculocardiac reflex of sevoflurane is lower than that of propofol and similar with that of desflurane.
Objective To evaluate the diagnosis value of purified protein derivative (PPD) antibody tests in childhood tuberculosis. Methods We reviewed 126 cases of hospitalization children tested body fluid PPD antibody by Enzyme-Linked Immunosorbent Assay (ELISA). Twenty-two them were diagnosed with tuberculosis. We determined the sensitivity, specificity, diagnostic likelihood ratio, positive prognostic value, negative prognostic value, post-test probability, respectively. Results The following accuracy statistics for the PPD body liquid antibody tests in this study: sensitivity, 45.45%; specificity, 91.35%; diagnostic likelihood ratio positive, 5.25; diagnostic likelihood ratio negative, 0.597; positive predictive value, 52.63%; negative predictive value, 88.79% and post-test probability, 48.09% in 15% of prevalence. Conclusion This study shows that body fluid PPD tests have limited value for diagnosis of tuberculosis in pediatric tuberculosis. Clinic physicians should be wary of the positive results of body fluid PPD antibody tests. The value of diagnosis is related to prevalence of tuberculosis in the specific hospital.
Objective To discuss the criteria of recipient selection，surgical approach，and complications and its theray by using of pediatric donation after cardiac death liver graft in adult recipient. Methods The clinical data of one case of pediatric donation after cardiac death liver to adult recipient was analyzed retrospectively and the literatures were reviewed. Results A 6-year-old girl pronounced brain death due to drowning and on the basis of cardiopulmonary criteria donated the organ．The liver graft weight was 598 g and the warm ischemic time was 10 min. The liver donor was transplanted to a 64-year-old woman，the graft to recipient weight ratio was 1.09%，the graft volume/estimated standard liver volume was 61.8%．The classic orthotopic liver transplantation without bypass was underwent，the postoperative recovery was smooth after the liver transplantation．The CT scan showed that the liver graft volume was 1 003cm3 on day 14 after operation．The patient was discharged on 45 d after orthotopic liver transplantation and the liver function was normal when followed-up 3 months after the operation. Conclusions Pediatric donation after cardiac death liver graft can be successfully utilized to adult recipient．Recipient selection and surgical approach should be decided by conditions of both donor and graft．