RESUMO
Indoor positioning systems (IPS) are used to locate people or objects in environments where the global positioning system (GPS) fails. The commitment to make bluetooth low energy (BLE) technology the leader in IPS and their applications is clear: Since 2009, the Bluetooth Special Interest Group (SIG) has released several improved versions. BLE offers many advantages for IPS, e.g., their emitters or beacons are easily deployable, have low power consumption, give a high positioning accuracy and can provide advanced services to users. Fingerprinting is a popular indoor positioning algorithm that is based on the received signal strength (RSS); however, its main drawbacks are that data collection is a time-consuming and labor-intensive process and its main challenge is that positioning accuracy is affected by various factors. The purpose of this work was to develop a semi-automatic data collection support system in a BLE fingerprinting-based IPS to: (1) Streamline and shorten the data collection process, (2) carry out impact studies by protocol and channel on the static positioning accuracy related to configuration parameters of the beacons, such as transmission power (Tx) and the advertising interval (A), and their number and geometric distribution. With two types of systems-on-chip (SoCs) integrated in Bluetooth 5 beacons and in two different environments, our results showed that on average in the three BLE advertising channels, the configuration of the highest Tx (+4 dBm) in the beacons produced the best accuracy results. However, the lowest Tx (-20 dBm) did not worsen them excessively (only 11.8%). In addition, in both scenarios, when lowering the density of beacons by around 42.7%-50%, the error increase was only around 8%-9.2%.
RESUMO
Se realizó un estudio descriptivo de una paciente a la cual se le diagnosticó un tumor carcinoide del apéndice, destacándose la poca frecuencia de la entidad en el niño y que a pesar de su poca malignidad, la vida del paciente puede ser amenazada por las complicaciones inmediatas, debiéndose pensar en este tipo de tumor ante cualquier paciente con síntomas de apendicitis aguda y/o tumoración palpable en fosa ilíaca derecha (FID). Se presenta un caso de una paciente de catorce años de edad que tuvo un cuadro de dolor abdominal en hipogastrio y FID, vómitos y fiebre, siendo operada en dos ocasiones con diagnóstico de plastrón apendicular abscedado con peritonitis y abscesos intrabdominales sucesivamente. En el estudio anatomo- patológico se encontró un tumor carcinoide del apéndice cecal. Su evolución final es considerada satisfactoria aunque aun esta bajo tratamiento en el Instituto de Oncología. Se recomendó insistir en el pesquizaje masivo de las tumoraciones abdominales a nivel de la atención primaria a través del médico de la familia(AU)
It was made a descriptive study to a patient with a carcinoide tumor of the appendix already diagnosed, detaching the low frequency of the entity. Instead of its few malignancy the life of the patient can be threatened by immediate complications, it leads to think in such a tumor on a patient with symptoms of acute appendicitis and/or palpable tumoration (FID). It is shown a case of a fourteen years old patient who had abdominal pains on hipogastrio and right iliac fosse (FID), vomiting and fever being operated for two times with plastrón apendicular abscedado with peritonitis diagnosed. On the anatomo- physiologic study it was found a carcinoide tumor of the cecal appendix. Her final evolution was successful. It was recommended to persist in the massive catching of abdominal tumorations at the primary attention(AU)
Assuntos
Humanos , Criança , Neoplasias/cirurgia , ApendicectomiaRESUMO
Se presenta el caso de una paciente de 1 año de edad que ingresó con vómitos biliosos, deshidratación severa y fiebre. Se realizaron estudios clínicos y radiológicos (tránsito intestinal) se diagnosticó oclusión a nivel duodeno-yeyunal. Se aplicó tratamiento quirúgico, encontrándose malrotación intestinal con vólvulo parcial de intestino con banda de Ladd, se realizó operación de Ladd y apendicectomía accesoria. La evolución fue favorable hasta presentar criterios de alta hospitalaria. Se realizó revisión bibliográfica de esta entidad médica, destacamos la poca frecuencia en nuestro medio por ser el único caso desde que se inauguró nuestra unidad de Terapia Intensiva Pediátrica en 1983(AU)
This is one year old female patient admited with vomits, severe deshidration and fever. Clinical and radiological studies (intestinal Rx contrasted) showed duodeno yeyunal obstruction. In cirurgicall treatment were fownd intestinal malrotation with parcial volvul of intestin with Ladd band. Ladd operation and apendicectomy were done. The patient had a good course. A bibliographic study of this disease was done becouse there is only this case since Intensive Care Unit inauguration in 1983(AU)
