Sökning: "myocardial infraction"

Hittade 3 uppsatser innehållade orden myocardial infraction.

1. 1. Automatic classification of cardiovascular age of healthy people by dynamical patterns of the heart rhythm

   Master-uppsats, Linköpings universitet/Statistik och maskininlärning

   Författare :priya kurian pullolickal; [2022]
   Nyckelord :Electrocardiogram ECG measures the electrical impulses of the heart. The time inter- val between two successive R peaks measured in millisecond using an ECG is called as an RR-interval. The distribution of the RR-intervals as well as classification of cardiovascu- lar age of healthy people from RR-interval was done in this thesis. For that; the data was preprocessed and time series plots were analyzed from sample dataset. The RR-intervals were then aligned to have the same start time using functions written and then an aver- age RR-interval series for each decade was created. The coefficient of variation was very less for this averaged dataset which concluded that averaging the RR-interval was a good approach. The averaged dataset per age decade as well agreed to the conclusion of the sample data set that the heart rate variability decreases with increasing age. Three clusters of age decade were also visible in the averaged dataset. The kurtosis; skew; mean; me- dian; histograms and Q-Q Plot were calculated for the sample as well as averaged dataset to find the distribution. The values all concluded that the RR-intervals follow Gaussian distribution or mixture of Gaussian distribution. The Poincaré plots showed that the dis- tribution of RR-interval is comet shaped for healthy individuals. The features were ex- tracted from the distribution as well as from the distribution of Discrete Fourier Transform DFT for classifying the age group from RR-intervals. Svitzky-Golay filtering was done to smooth the signal before taking the features from DFT. Random Forest and Support Vector Machine was the machine learning algorithms used to classify the age decade. Later the results were compared using a dataset from physionet that had RR-intervals of individuals suffering from myocardial infraction. The age classification using Random Forest and Sup- port Vector Machine concluded that the Gdańsk dataset using Random Forest Algorithm and three classes gave the highest test accuracy of 59% for the dataset.;

   Sammanfattning : .... LÄS MER

3. 2. Patientinformationens betydelse: En kvalitativ studie om information vid hjärtinfarkt

   Kandidat-uppsats, Högskolan i Skövde/Institutionen för hälsovetenskaper

   Författare :Annica Ericsson; Charlotta Lundberg; [2022]
   Nyckelord :Experience; Information; Myocardial Infraction; Patient; Suffering; Erfarenhet; Hjärtinfarkt; Information; Lidande; Patient;

   Sammanfattning : Bakgrund: Hjärtinfarkt är en av de vanligaste hjärt-kärlsjukdomarna i världen, i Sverige drabbas ungefär 40 000 personer varje år. En av orsakerna är åderförkalkning.  Behandlingsmetoderna Percutan coronar intervention (PCI) och Coronary artery bypassgrafting (CABG) är de vanligaste. LÄS MER

4. 3. Jämförelse mellan kvinnor och mäns överlevnad baserad på resultat från arbetsprov och myokardscintigrafi

   Kandidat-uppsats, Malmö högskola/Fakulteten för hälsa och samhälle (HS)

   Författare :SEYEDEH HOURIEH MIRBAZEL; [2011]
   Nyckelord :Angina pectoris; cardiac ischemia; coronary artery disease; exercise test; myocardial infraction; myocardial perfusion imaging; Arbetsprov; Angina pectoris; Hjärtischemi; Hjärtinfarkt; Koronarkärlssjukdom; Myokardscintigrafi;

   Sammanfattning : Mirbazel SH. Jämförelse mellan kvinnor och mäns överlevnad baserad på resultat från arbetsprov och myokardscintigrafi. Examensarbete i Biomedicinsk Laboratorievetenskap, 15 högskolepoäng. Malmö högskola: Hälsa och Samhälle, utbildningsområde för Biomedicinsk Laboratorievetenskap, 2011. LÄS MER