Drug utilization pattern in geriatric inpatients of medicine department in a Tertiary Care Teaching Hospital

Background: The objective of present study was to assess the drug utilization pattern among the geriatric patients.Methods: Totally, 150 prescriptions of patients’ ≥65 years admitted in the medicine inpatient department of MVJ Medical College and Research Hospital, Hoskote were noted from September 2013 to March 2014 and demographic profile, drug utilization pattern, commonly used drugs as per anatomical therapeutic chemical classification (ATC) and WHO core indicators were assessed after taking informed consent from the patients.Results: Out of 150 patients, average age of geriatric patients was 66.83 years with female preponderance (59%). Maximum number of patients were having respiratory disorders (66.67%) followed by diabetes mellitus (35.3%), and cardiovascular diseases (32.67%). 76% patients had co-morbid diseases like diabetes mellitus (n=53), hypertension (n=49), and chronic obstructive pulmonary disease (n=41). A total of 849 drug formulations, containing 1050 active ingredients, were prescribed with average number of 7 (1050/150) drugs per prescription. Only 70 formulations were prescribed by their generic names, which is less than that prescribed by their brand names 779 and total of 146 (17.19%) drugs were prescribed as fixed dose combinations. Only 45.47% drugs were according to WHO Essential Medicines List. Drugs acting on respiratory system (n=189) were the most commonly used drugs in our study followed by drugs acting on the gastrointestinal system (n=130), antimicrobials (n=113), cardiovascular system (n=112), endocrine (n=83), and nutritional supplements (n=72). Polypharmacy was prevalent in 62% and about 22.67% of patients received <5 drugs. Pantoprazole was most frequently prescribed drug followed by aspirin 75 mg, adrenergic, and anticholinergic bronchodilators.Conclusion: Thus, irrational prescribing and polypharmacy were prevalent among elderly. Drug utilization data can help in assessing the quality of care given to the geriatric patients and promote rational use of medicines

Effects of ramped wall temperature and concentration on viscoelastic Jeffrey’s fluid flows from a vertical permeable cone

In thermo-fluid dynamics, free convection flows external to different geometries such as cylinders, ellipses, spheres, curved walls, wavy plates, cones etc. play major role in various industrial and process engineering systems. The thermal buoyancy force associated with natural convection flows can exert a critical role in determining skin friction and heat transfer rates at the boundary. In thermal engineering, natural convection flows from cones has gained exceptional interest. A theoretical analysis is developed to investigate the nonlinear, steady-state, laminar, non-isothermal convection boundary layer flows of viscoelastic fluid from a vertical permeable cone with a power-law variation in both temperature and concentration. The Jeffery’s viscoelastic model simulates the non-Newtonian characteristics of polymers, which constitutes the novelty of the present work. The transformed conservation equations for linear momentum, energy and concentration are solved numerically under physically viable boundary conditions using the finite-differences Keller-Box scheme. The impact of Deborah number (De), ratio of relaxation to retardation time (λ), surface suction/injection parameter (fw), power-law exponent (n), buoyancy ratio parameter (N) and dimensionless tangential coordinate (Ѯ) on velocity, surface temperature, concentration, local skin friction, heat transfer rate and mass transfer rate in the boundary layer regime are presented graphically. It is observed that increasing values of De reduces velocity whereas the temperature and concentration are increased slightly. Increasing λ enhance velocity however reduces temperature and concentration slightly. The heat and mass transfer rate are found to decrease with increasing De and increase with increasing values of λ. The skin friction is found to decrease with a rise in De whereas it is elevated with increasing values of λ. Increasing values of fw and n, decelerates the flow and also cools the boundary layer i.e. reduces temperature and also concentration. The study is relevant to chemical engineering systems, solvent and polymeric processes

Radiative and magnetohydrodynamics flow of third grade viscoelastic fluid past an isothermal inverted cone in the presence of heat generation/absorption

A mathematical analysis is presented to investigate the nonlinear, isothermal, steady-state, free convection boundary layer flow of an incompressible third grade viscoelastic fluid past an isothermal inverted cone in the presence of magnetohydrodynamic, thermal radiation and heat generation/absorption. The transformed conservation equations for linear momentum, heat and mass are solved numerically subject to the realistic boundary conditions using the second-order accurate implicit finite-difference Keller Box Method. The numerical code is validated with previous studies. Detailed interpretation of the computations is included. The present simulations are of interest in chemical engineering systems and solvent and low-density polymer materials processing

Oil agglomeration of weakly hydrophobic coals and coal/pyrite mixtures

Fine particle suspensions of various materials in water were agglomerated with heptane in a modified blender to determine the agglomeration characteristics of the solids. The materials included Upper Freeport coal, oxidized Upper Freeport coal, two batches of Illinois No. 6 coal, graphite, and iron pyrite. The response of these materials to oil agglomeration varied over a wide range and seemed to depend on their relative hydrophobicity. Treating the weakly hydrophobic materials with traces of sodium oleate greatly enhanced their response to oil agglomeration. The separation of mixtures of pyrite and various carbonaceous materials by selective agglomeration with heptane was also studied. While an excellent separation of graphite and pyrite was achieved, the separation of coal and pyrite proved elusive.Reprinted (adapted) with permission from Energy Fuels, 1988, 2 (2), pp 145–150. Copyright 1988 American Chemical Society.</p

Entropy analysis of third-grade MHD convection flows from a horizontal cylinder with slip

In thermos fluid dynamics, free convection flows external to different geometries, such as cylinders, ellipses, spheres, curved walls, wavy plates, cones, etc., play major role in various industrial and process engineering systems. The thermal buoyancy force associated with natural convection flows can play a critical role in determining skin friction and heat transfer rates at the boundary. In thermal engineering, natural convection flows from cylindrical bodies has gained exceptional interest. In this article, we mathematically evaluate an entropy analysis of magnetohydrodynamic third-grade convection flows from permeable cylinder considering velocity and thermal slip effects. The resulting non-linear coupled partial differential conservation equations with associated boundary conditions are solved with an efficient unconditionally stable implicit finite difference Keller-Box technique. The impacts of momentum and heat transport coefficients, entropy generation and Bejan number are computed for several values of non-dimensional parameters arising in the flow equations. Streamlines are plotted to analyze the heat transport process in a two-dimensional domain. Furthermore, the deviations of the flow variables are compared with those computed for a Newtonian fluid and this has important implications in industrial thermal material processing operations, aviation technology, different enterprises, energy systems and thermal enhancement of industrial flow processes