Acromioclavicular disjunctions: surgical treatment options

University of Medicine and Pharmacy, Targu Mures, Romania, The 6th International Medical Congress for Students and Young Doctors, May 12-14, 2016Introduction: Acromioclavicular disjunctions occur most commonly in active or athletic young adults and it is one of the most common shoulder problem, accounting 9% of all shoulder injuries. The aim of our paper is to present several surgical techniques. Material and methods: We conducted a retrospective analysis of the cases of acromioclvicular disjunction from the orthopedic department. It was found that from a total of 42 cases, 15 had surgical indication and the rest were either treated conservatively or refused treatment. Discussion: The two most used surgical techniques were Weaver - Dunn and Dewar – Barrington. Weaver - Dunn is a technique whereby the coracoid tip is fixed to the collarbone with a screw. Dewar - Barrington is a technique that consists in transferring the end coracoacromial external ligament of clavicle. Conclusion: Treatment of acromioclavicular disjunctions has been a subject of debate. In general, surgical management should be offered acutely only to those who require high-level upper extremity function and late to those with significant shoulder pain and/or dysfunction refractory to nonoperative treatment. The orthopedic surgeon has the freedom to choose from a variety of tehniques

Changes occured in the psychological behavior in children with a surgically corrected congenital heart disease

University of Medicine and Pharmacy Targu Mures, Romania, The 6th International Medical Congress for Students and Young Doctors, May 12-14, 2016Introduction: Congenital heart disease is a malformation of the heart, aorta or other large blood vessels, thatis the most frequent form of major birth defect in newborns.The objective of the study is to analyze the psychological changes that occur in patients after corrective surgery for congenital heart disease and the relation between the type of congenital heart disease and the psychological symptoms. Material and Metods: This is a retrospective study on a number of 43 patients admitted in the section Pediatric Cardiology III of Institute of Cardiovascular Disease and Transplant Targu Mures, between 01.01.2008-31.12.2015, diagnosed with congenital heart disease who undergo surgery and psychological evaluation. Discussion results: 86% of the studied patiens had complex congenital heart disease and only 14% presented simple congenital heart disease.67% of them are males, 33% females and 60% were from an urban background and 40% from a rural background.In 88% of the patients occured changes in their psychological behavior and the results show a correlation between emotional lability, hipersensitivity and female genders.No correlation were found between the type of the congenital heart disease the the psychologial symptoms. Conclusion: The type of the congenital heart disease has no effect on the psychological symptoms that occur in patients after corrective surgery for congenital heart disease

A rare case of multiple myeloma in a patient with an unresponsive to chemo-and radiotherapy frontoparietal gygantic plasmacytoma

University of Medicine and Pharmacy, Targu Mures, Romania, The 6th International Medical Congress for Students and Young Doctors, May 12-14, 2016Introduction: Multiple myeloma is a cancer of plasma cells, a type of white blood cell normally responsible for producing antibodies. In multiple myeloma, collections of abnormal plasma cells accumulate in the bone marrow, where they interfere with the production of normal blood cells. Most cases of multiple myeloma also feature the production of a paraprotein - an abnormal antibody which can cause bone lesions and hypercalcemia. Plasmacytoma refers to a tumour consisting of abnormal plasma cells that grows within the soft tissue or bony skeleton in the context of multiple myeloma disease. Objective: We will present the case of a 56 years old female patient admitted in the Medical Clinic I - Department of Hematology of Targu Mures, suffering from a rare hematological cancer - multiple myeloma of which onset was the appearance of a solitary extramedullary gigantic frontoparietal plasmacytoma which also did not responded at all to chemo-and radiotherapy treatment still increasing its size. Clinical case: We monitored the patient over a period of 13 months and we will display the evolution chronologically.Conclusions: Usually radiotherapy provides excellent local and regional control of plasmacytomas, but in our case it had no positive effect. The patient is having an evolution which leads to an continue worsening without obtaining remission, therefore the long-term prognosis is reserved while the medium one is favorable

A mobile detector for measurements of the atmospheric muon flux in underground sites

Muons comprise an important contribution of the natural radiation dose in air (approx. 30 nSv/h of a total dose rate of 65-130 nSv/h), as well as in underground sites even when the flux and relative contribution are significantly reduced. The flux of the muons observed in underground can be used as an estimator for the depth in mwe (meter water equivalent) of the underground site. The water equivalent depth is an important information to devise physics experiments feasible for a specific site. A mobile detector for performing measurements of the muon's flux was developed in IFIN-HH, Bucharest. Consisting of 2 scintillator plates (approx. 0.9 m2) which measure in coincidence, the detector is installed on a van which facilitates measurements at different locations at surface or underground. The detector was used to determine muon fluxes at different sites in Romania. In particular, data were taken and the values of meter water equivalents were assessed for several locations from the salt mine from Slanic Prahova, Romania. The measurements have been performed in 2 different galleries of the Slanic mine at different depths. In order to test the stability of the method, also measure- ments of the muon flux at surface at different elevations were performed. The results were compared with predictions of Monte-Carlo simulations using the CORSIKA and MUSIC codes

Measurement of the cosmic ray spectrum above 4×10184{\times}10^{18} eV using inclined events detected with the Pierre Auger Observatory

A measurement of the cosmic-ray spectrum for energies exceeding $4{\times}10^{18}$ eV is presented, which is based on the analysis of showers with zenith angles greater than $60^{\circ}$ detected with the Pierre Auger Observatory between 1 January 2004 and 31 December 2013. The measured spectrum confirms a flux suppression at the highest energies. Above $5.3{\times}10^{18}$ eV, the "ankle", the flux can be described by a power law $E^{-\gamma}$ with index $\gamma=2.70 \pm 0.02 \,\text{(stat)} \pm 0.1\,\text{(sys)}$ followed by a smooth suppression region. For the energy ($E_\text{s}$) at which the spectral flux has fallen to one-half of its extrapolated value in the absence of suppression, we find $E_\text{s}=(5.12\pm0.25\,\text{(stat)}^{+1.0}_{-1.2}\,\text{(sys)}){\times}10^{19}$ eV.Comment: Replaced with published version. Added journal reference and DO

Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory

The Auger Engineering Radio Array (AERA) is part of the Pierre Auger Observatory and is used to detect the radio emission of cosmic-ray air showers. These observations are compared to the data of the surface detector stations of the Observatory, which provide well-calibrated information on the cosmic-ray energies and arrival directions. The response of the radio stations in the 30 to 80 MHz regime has been thoroughly calibrated to enable the reconstruction of the incoming electric field. For the latter, the energy deposit per area is determined from the radio pulses at each observer position and is interpolated using a two-dimensional function that takes into account signal asymmetries due to interference between the geomagnetic and charge-excess emission components. The spatial integral over the signal distribution gives a direct measurement of the energy transferred from the primary cosmic ray into radio emission in the AERA frequency range. We measure 15.8 MeV of radiation energy for a 1 EeV air shower arriving perpendicularly to the geomagnetic field. This radiation energy -- corrected for geometrical effects -- is used as a cosmic-ray energy estimator. Performing an absolute energy calibration against the surface-detector information, we observe that this radio-energy estimator scales quadratically with the cosmic-ray energy as expected for coherent emission. We find an energy resolution of the radio reconstruction of 22% for the data set and 17% for a high-quality subset containing only events with at least five radio stations with signal.Comment: Replaced with published version. Added journal reference and DO

Measurement of the Radiation Energy in the Radio Signal of Extensive Air Showers as a Universal Estimator of Cosmic-Ray Energy

We measure the energy emitted by extensive air showers in the form of radio emission in the frequency range from 30 to 80 MHz. Exploiting the accurate energy scale of the Pierre Auger Observatory, we obtain a radiation energy of 15.8 \pm 0.7 (stat) \pm 6.7 (sys) MeV for cosmic rays with an energy of 1 EeV arriving perpendicularly to a geomagnetic field of 0.24 G, scaling quadratically with the cosmic-ray energy. A comparison with predictions from state-of-the-art first-principle calculations shows agreement with our measurement. The radiation energy provides direct access to the calorimetric energy in the electromagnetic cascade of extensive air showers. Comparison with our result thus allows the direct calibration of any cosmic-ray radio detector against the well-established energy scale of the Pierre Auger Observatory.Comment: Replaced with published version. Added journal reference and DOI. Supplemental material in the ancillary file