Introduction Sparse data and conflicting evidence exist on the prevalence and prognosis of organophosphate (OP)-related cardiac toxicity. We aimed to characterize the cardiac abnormalities of OP after an acute cholinergic crisis in adults without previous cardiovascular conditions. Patients and Methods We did a prospective observational study in a tertiary-care hospital of north India (Postgraduate Institute of Medical Education and Research, Chandigarh) in 74 patients aged ≥ 13 years admitted with acute OP poisoning after self-ingestion. A systemic evaluation, including clinical characteristics, electrocardiography, and echocardiography, was performed to estimate the prevalence and prognosis of cardiac injury. A rate-corrected QT interval was calculated using Bazett’s method, and >440 milliseconds was used to define prolongation. Results Chlorpyrifos was the most commonly ingested OP (n = 29). The patients had a similar occurrence of hypotension (n = 10) and hypertension (n = 9) at admission, and electrocardiography demonstrated sinus tachycardia in 38 (51.3%) and sinus bradycardia in one case. During the hospital stay, 3 out of 74 patients had a prolonged rate-corrected QT interval (457, 468, and 461 milliseconds), and one patient developed supraventricular tachycardia. Eight (10.8%) patients developed the intermediate syndrome, and six (8.1%) died. None of the hemodynamic or electrocardiographic abnormalities was associated with in-hospital mortality or intermediate syndrome development on univariant analysis. Baseline echocardiography at hospital discharge was performed in 27 patients (admitted during 2018) and normal in all except mild tricuspid regurgitation in one. At a 6-month follow-up, 23 cases were available for cardiovascular screening (including echocardiography) and had a normal evaluation. Conclusion Cardiac toxicity is uncommon after acute OP self-ingestion and lacks prognostic significance.

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Introduction: Computerized Treatment planning system (TPS) is an integral part of radiation treatment procedure. The main part of treatment planning system is a calculation algorithm incorporated in the Treatment Planning System. Various algorithms used in the TPS have capabilities and limitation on specific situations. Oobjective: The objective of the work is to analyse the depth dose distribution generated by different dose calculation algorithms used in TPS in regions of low and high dose gradient. Materials and Methods: Four different dose calculation algorithms used for treatment planning such as Modified Clarkson, Sector integration, Fast Fourier Transform, Convolution-Superposition algorithm was used to generate the percentage depth dose distribution in a water phantom up to 25 cm depth. The values are compared with experimental results using Radiation Field Analyser. The PDD values also generated at build up region and the values were compared with experimental results using a Parallel plate ionization chamber. Rresults: The results show that the dose calculated by different algorithms shows difference at build up region and at larger depths. Conclusion: In the study, it was observed that the algorithms are reliable at the regions of dose uniformity, but care should be taken to interpret the dose distribution at the regions dose inhomogeneity.

Introduction: Pneumonia Severity Index (PSI) and CURB-65 rule for community acquired pneumonia (CAP) have been developed to stratify patients based on mortality. Lack of a risk stratifying score like PSI or CURB-65 can lead to significant delay in starting treatment. This study was conducted to find out the ability of CURB-65 score and PSI to predict clinically relevant outcomes. Methods: 78 patients diagnosed as CAP admitted to a tertiary care hospital were enrolled into the study. Detailed clinical history was noted and CURB-65 and PSI scores were given with the help of a structured questionnaire in <24 hours of admission. The patients were revisited at day 3 and at discharge and data collected. Results:Out of 78 patients included in the study, 60 were males and 18 were females. Of the 78 patients, 14 died accounting for aninhospital mortality of 17.94%. Mortality in the mild, moderate and severe groups of CURB-65 were 0%, 16.7% and 47.8% respectively. Mortality in the mild, moderate and severe groups of PSI were 1.8%, 50% and 80% respectively. Area under the curve (AUC) for CURB-65 and PSI in terms of in hospital mortality were 0.935 and 0.920 respectively. Conclusion: The CURB-65 and PSI scores correlated well with mortality and other severity indicators. The CURB-65 has a better discriminatory power than PSI inour study. Because of its simplicity in addition to its better discriminatory power than PSI, CURB-65 may be better suited as a severity scoring system in CAP.