prikaz prve stranice dokumenta Elektronička auskultacija disanja za otkrivanje astmatičnih napadaja u djece
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scientific master's theses
Elektronička auskultacija disanja za otkrivanje astmatičnih napadaja u djece
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2004. urn:nbn:hr:168:178358
Mazić, Igor
University of Zagreb
Faculty of Electrical Engineering and Computing

Institutional repository: FER Repository

Cite this document

Mazić, I. (2004). Elektronička auskultacija disanja za otkrivanje astmatičnih napadaja u djece (Scientific master's theses). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:178358

Mazić, Igor. "Elektronička auskultacija disanja za otkrivanje astmatičnih napadaja u djece." Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, 2004. https://urn.nsk.hr/urn:nbn:hr:168:178358

Mazić, Igor. "Elektronička auskultacija disanja za otkrivanje astmatičnih napadaja u djece." Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, 2004. https://urn.nsk.hr/urn:nbn:hr:168:178358

Mazić, I. (2004). 'Elektronička auskultacija disanja za otkrivanje astmatičnih napadaja u djece', Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 02 December 2024, https://urn.nsk.hr/urn:nbn:hr:168:178358

Mazić I. Elektronička auskultacija disanja za otkrivanje astmatičnih napadaja u djece [Scientific master's theses]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2004 [cited 2024 December 02] Available at: https://urn.nsk.hr/urn:nbn:hr:168:178358

I. Mazić, "Elektronička auskultacija disanja za otkrivanje astmatičnih napadaja u djece", Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2004. Available at: https://urn.nsk.hr/urn:nbn:hr:168:178358

Metadata
TitleElektronička auskultacija disanja za otkrivanje astmatičnih napadaja u djece
AuthorIgor Mazić
MentorRatko Magjarević (mentor)
Committee memberRatko Magjarević (predsjednik povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
Zagreb
Defense date and country2004, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Universal decimal classification
(UDC)		621.3 - Electrical engineering
Abstract
Auskultacija (slušanje) i mjerenje zvučnih signala tijekom disanja koristi se u dijagnostici plućnih bolesti, uglavnom u kliničkoj okolini i kontroliranim uvjetima. Za bronhijalnu astmu, jednu od učestalih kroničnih bolesti, karakteristična je prilikom izdisaja povremena i kratkotrajna pojava tonova (fićuka) u frekvencijskom području od nekoliko stotina herca. Amplituda tonova i učestalost njihove pojave ovisi o protoku zraka u dišnom sustavu, odnosno o stupnju opstrukcije kod bolesnika. Za ranu detekciju astmatičnih napadaja koriste se kod odraslih osoba jednostavna prijenosna mjerila protoka. Takva mjerila smatraju se neprimjerenim kod djece, zbog slabe mogućnosti kontrole jednolikosti disanja u različitim prilikama. Cilj ovog rada je ispitati mogućnosti rane detekcije astme u djece analizom i obradom respiracijskih signala dobivenih s pomoću mjernih pretvornika. Koristila su se dva tipa mjernih pretvornika: mikrofon i akcelerometar koji su se postavljali na dušnik i prsni koš. Spektri signala snimljenih fonopneumograma su se računali različitim metodama te su se grafički prikazivali u vremensko-frekvencijskoj ravnini. Ispitivanje se provelo u suradnji s Općom bolnicom Dubrovnik na uzorku od 28 djece koji su bili u fazi pozitivne remisije u dobi od jedne do sedam godina.
Abstract (english)
The auscultation and measurement of respiratory acoustical signals is used in pulmonary disease diagnostics, mainly under controlled conditions in clinical environment. The occasional and short breath occurrence of sounds (wheezing) in frequency range of a few hundred Hz is characteristic for expiration in cases of bronchial asthma, one of the common chronic diseases. The amplitude of the respiratory sounds and their appearance depend on the air flow in the respiratory system, meaning, they depend on patient's grade of pulmonary obstruction. Plane peak-flow meters are used for early detection of asthmatic seizures in adults. Such peak-flow meters are considered inadequate for children, due to weak control capacity of monotonous breathing in different situations. The aim of this study was to validate the possibility of early asthma detection in children by analysis and processing of respiratory signals attained from transducers. Two types of transducers were used: electret microphones and accelerometers, positioned over trachea and chest. The power spectra were calculated and analyzed using different methods, and the results were graphical presented in the time-frequency plane. The research was accomplished in cooperation with General Hospital in Dubrovnik within the sample group of 28 infants (1-7 years old) which were in state of possitive remission.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:168:178358
Study programmeTitle: Postgraduate master programme in electrical engineering
Study programme type: university
Study level: postgraduate
Academic / professional title: Magistar znanosti elektrotehnike (Magistar znanosti elektrotehnike)
Type of resourceText
Extent101 str. ; 30 cm
File originBorn digital
Access conditionsClosed access
Terms of useLicence In copyright icon
Created on2020-03-09 13:23:38