Perforated acute appendicitis in a term neonate

Acute appendicitis is rare in term neonates. In most of the reported cases, it is seen as a complication of necrotizing enterocolitis, Hirschsprung’s disease, cystic fibrosis, meconium plug, inguinal hernia, umbilical hernia, Group B Streptococcal septicemia and chorioamnionitis. A surviving term male newborn with isolated acute appendicitis with perforation is reported. A high index of suspicion of acute appendicitis, early surgery and the importance of a thorough search for a perforation in cases of neonatal acute abdominal distention is stressed. Literature of this rare condition is reviewed briefly     

The value of vaccination in chronic kidney disease

There has been much attention directed toward the high mortality of patients with end-stage renal disease (ESRD), with much of the focus on cardiovascular disease. However, infectious disease is the second most common cause of death in late-stage chronic kidney disease (CKD) patients. Although CKD patients are immunocompromised, some vaccines such as influenza, retain their efficacy and reduce infection rates with a standard immunization schedule. Other vaccines, such as hepatitis B and pneumococcal vaccines, require more frequent and/or higher doses to produce and maintain protective antibody levels. Attention has recently been given to the efficacy of influenza vaccination in ESRD patients in reducing morbidity and mortality. Centers with vaccination protocols have demonstrated reduced infection rates and resultant decreased morbidity and mortality. It could be extrapolated from this that widespread vaccination would reduce the total cost of ESRD patient care, and potentially improve patient well-being. However, vaccination appears to be underutilized in CKD patients, and it is a readily available intervention to improve outcomes.     

Effect of intraoperative magnesium infusion on perioperative analgesia in open cholecystectomy

STUDY OBJECTIVE: To study the role of magnesium sulphate (MgSO4) on analgesic requirement, pain, discomfort, and sleep during perioperative period. DESIGN: prospective, double-blinded, randomized study. SETTINGS: Operating room and recovery ward at a university teaching hospital. PATIENTS: 50 ASA physical status I and II patients scheduled for elective open cholecystectomy with general anesthesia. INTERVENTIONS: patients were randomly allocated to receive MgSO4 or saline intravenously (i.v.). Patients in the magnesium group received 50% MgSO4 (50 mg kg(-1)) in 100 mL saline and those in the control group received an equal volume of saline i.v. during the preoperative period followed by 50 mL hr(-1) infusion of either MgSO4 (15 mg kg(-1) hr(-1)) or saline until the end of surgery. MEASUREMENTS AND MAIN RESULTS: Morphine requirement, pain during rest and on coughing, discomfort, and insomnia were assessed during the postoperative period for 24 hours. Intravenous morphine 40 microg kg(-1) increments were given to all patients in the postoperative period for analgesia. Patients in the magnesium and control groups had similar morphine requirement during the first 24 hours postoperatively (p = 0.07). Patients in the magnesium group experienced less discomfort during the first hour after the operation. They also had better sleep quality during the first postoperative night than did the control group patients (p < 0.05). The frequency of side effects was similar in the two groups. CONCLUSION: Administration of intraoperative MgSO4 as an adjuvant analgesic in patients undergoing open cholecystectomy resulted in better pain relief and comfort in the first postoperative hour, but it did not significantly decrease the postoperative morphine requirement. Magnesium sulphate resulted in better sleep quality during the postoperative period, without any significant adverse effects. The role of MgSO4 as an adjuvant analgesic in open cholecystectomy needs to be studied further.     

Anesthesia for removal of inhaled foreign bodies in children

BACKGROUND: Foreign body aspiration may be a life-threatening emergency in children requiring immediate bronchoscopy under general anesthesia. Both controlled and spontaneous ventilation techniques have been used during anesthesia for bronchoscopic foreign body removal. There is no prospective study in the literature comparing these two techniques. This prospective randomized clinical trial was undertaken to compare spontaneous and controlled ventilation during anesthesia for removal of inhaled foreign bodies in children. METHODS: Thirty-six children posted for rigid bronchoscopy for removal of airway foreign bodies over a period of 2 years and 2 months in our institution were studied. After induction with sleep dose of thiopentone or halothane, they were randomly allocated to one of the two groups. In group I, 17 children were ventilated after obtaining paralysis with suxamethonium. In group II, 19 children were breathing halothane spontaneously in 100% oxygen. RESULTS: All the patients in the spontaneous ventilation group had to be converted to assisted ventilation because of either desaturation or inadequate depth of anesthesia. There was a significantly higher incidence of coughing and bucking in the spontaneous ventilation group compared with the controlled ventilation group (P = 0.0012). CONCLUSION: Use of controlled ventilation with muscle relaxants and inhalation anesthesia provides an even and adequate depth of anesthesia for rigid bronchoscopy.     

Prediction of mortality in an Indian intensive care unit

Objective To compare hospital outcome prediction using an artificial neural network model, built on an Indian data set, with the APACHE II (Acute Physiology and Chronic Health Evaluation II) logistic regression model.Design Analysis of a database containing prospectively collected data.Setting Medical-neurological ICU of a university hospital in Mumbai, India.Subjects Two thousand sixty-two consecutive admissions between 1996 and1998.Interventions None.Measurements and results The 22 variables used to obtain day-1 APACHE II score and risk of death were recorded. Data from 1,962 patients were used to train the neural network using a back-propagation algorithm. Data from the remaining 1,000 patients were used for testing this model and comparing it with APACHE II. There were 337 deaths in these 1,000 patients; APACHE II predicted 246 deaths while the neural network predicted 336 deaths. Calibration, assessed by the Hosmer-Lemeshow statistic, was better with the neural network (=22.4) than with APACHE II (=123.5) and so was discrimination (area under receiver operating characteristic curve =0.87 versus 0.77, p=0.002). Analysis of information gain due to each of the 22 variables revealed that the neural network could predict outcome using only 15 variables. A new model using these 15 variables predicted 335 deaths, had calibration (=27.7) and discrimination (area under receiver operating characteristic curve =0.88) which was comparable to the 22-variable model (p=0.87) and superior to the APACHE II equation (p<0.001).Conclusion Artificial neural networks, trained on Indian patient data, used fewer variables and yet outperformed the APACHE II system in predicting hospital outcome.Electronic Supplementary Material Supplementary material is available in the online version of this article at Part of this work was presented at the Sixth Annual Critical Care Congress of the Indian Society for Critical Care Medicine, Bangalore, India     

Small bowel obstruction in an adolescent: a case of Meckel's diverticulum

Meckel's diverticulum is a relatively uncommon cause of small bowel obstruction in the adolescent population. Here we discuss a patient with clinical and radiographic evidence of a complete bowel obstruction and describe the subsequent operative management. Finally, current literature concerning the diagnosis and management of Meckel's diverticulum is reviewed.     

Abnormal brain response of chronic schizophrenia patients despite normal performance during a visual vigilance task

Deficits of attention are common among individuals with schizophrenia (SZ) and are related both to genetic liability to the disorder and to functional outcome among patients. To explore the brain systems underlying these attentional abnormalities, we compared the response of nine patients with chronic SZ or schizoaffective disorder to that of 10 matched healthy individuals performing a simple visual vigilance task during functional magnetic resonance imaging. The two groups performed equivalently on the task. When the blood oxygen level dependent (BOLD) signal during identification of a target letter among similar-looking letters was compared to the response during fixation trials, both groups showed multiple clusters of significant brain response in widespread cortical regions. Compared with healthy participants, SZ patients showed a diminished response in the inferior frontal cortex and an abnormally enhanced response in right postcentral gyrus, right medial temporal lobe and left cerebellum. The results suggest that abnormalities of functional brain response to attentional tasks can be observed among patients with SZ even when behavioral performance is unimpaired, and provide further evidence that brain systems related to attention are likely to be involved in the pathophysiology of the disorder.     

Proxy and surrogate consent in geriatric neuropsychiatric research: update and recommendations

OBJECTIVE: The ethics of involving decisionally incapable adults in research will continue to grow in importance as more research is conducted to address the problems of decisionally impaired persons, especially elderly persons. The authors provide an updated discussion, critique, and recommendations regarding the need for clear legal and regulatory policy on this issue. METHOD: The authors summarize and build on discussions of a workshop on proxy and surrogate consent in geriatric neuropsychiatric research sponsored by the Aging Research Consortium of the National Institute of Mental Health. They incorporate the views of various stakeholders present at the workshop as well as review recent federal and state initiatives, recent empirical research and media reports, and various commission reports and relevant regulations. RESULTS: Despite a wave of initiatives in the late 1990s to clarify policy, surrogate consent for research continues to be a murky legal area and incapable subjects in the United States still lack clear regulatory protection. There is evidence that conservative risk management strategies by institutional review boards and their institutions may severely restrict research with decisionally impaired subjects. A passive approach to this problem may no longer be feasible. A recent federal advisory report on human research protections and legislative initiatives in some states could begin to provide a blueprint for future policy making. Interim recommendations for various stakeholders are given. CONCLUSIONS: It is imperative that the scientific community, patients and their advocates, and policy makers at all levels establish a constructive dialogue to clarify ethical and legal standards in the area of proxy and surrogate consent for research.     

Costs of illness due to typhoid fever in an Indian urban slum community: implications for vaccination policy

Data on the burden of disease, costs of illness, and cost-effectiveness of vaccines are needed to facilitate the use of available anti-typhoid vaccines in developing countries. This one-year prospective surveillance was carried out in an urban slum community in Delhi, India, to estimate the costs of illness for cases of typhoid fever. Ninety-eight culture-positive typhoid, 31 culture-positive paratyphoid, and 94 culture-negative cases with clinical typhoid syndrome were identified during the surveillance. Estimates of costs of illness were based on data collected through weekly interviews conducted at home for three months following diagnosis. Private costs included the sum of direct medical, direct non-medical, and indirect costs. Non-patient (public) costs included costs of outpatient visits, hospitalizations, laboratory tests, and medicines provided free of charge to the families. The mean cost per episode of blood culture-confirmed typhoid fever was 3,597 Indian Rupees (US$ 1=INR 35.5) (SD 5,833); hospitalization increased the costs by several folds (INR 18,131, SD 11,218, p<0.0001). The private and non-patient costs of illness were similar (INR 1,732, SD 1,589, and INR 1,865, SD 5,154 respectively, p=0.8095). The total private and non-patient ex-ante costs, i.e. expected annual losses for each individual, were higher for children aged 2-5 years (INR 154) than for those aged 5-19 years (INR 32), 0-2 year(s) (INR 25), and 19-40 years (INR 2). The study highlights the need for affordable typhoid vaccines efficacious at 2-5 years of age. Currently-available Vi vaccine is affordable but is unlikely to be efficacious in the first two years of life. Ways must be found to make Vi-conjugate vaccine, which is efficacious at this age, available to children of developing-countries.     

Association of diabetes with dyskinesia in older psychosis patients

Rationale Older patients treated with antipsychotics are more likely to develop tardive dyskinesia (TD) than younger individuals. Advanced age is also an important risk factor for diabetes, which may be associated with TD. These observations suggest that older diabetic patients may be particularly vulnerable to developing TD.Objective To examine whether older psychosis patients with diabetes exhibit more severe dyskinesia than well-matched patients without diabetes and to test whether there are differences in dyskinesia severity between diabetic patients treated with conventional versus atypical antipsychotics versus those not taking antipsychotic medications.Method Sixty-one psychosis patients with diabetes and 122 case-matched non-diabetic comparison patients were studied. Observer-based and quantitative instrumental measures were administered to assess prevalence and severity of dyskinesia. Raters were unaware of patients diabetes status.Results Diabetic patients exhibited significantly more severe TD than non-diabetic comparison patients. Groups did not differ in terms of severity of parkinsonism. Significantly more diabetic (27.9%) than non-diabetic (14.6%) patients met research diagnostic criteria for TD. Diabetic patients treated with atypical antipsychotics at the time of assessment had significantly more severe TD than all other patient subgroups, including patients treated with conventional antipsychotics. Results from the instrumental measures of force steadiness were consistent with observer-based severity ratings.Conclusion The deleterious effect of diabetes on TD in the absence of any effect of parkinsonism supports preclinical studies of glucose-related dopamine hyperfunction and has implications for the pharmacologic management of psychosis in patients with pre-existing diabetes.