Non-invasive assessment of risk for severe tachyarrhythmias by means of non-linear analysis techniques

Sudden death remains a phenomenon of disturbing proportions, displaying a mean incidence of 300,000-350,000 persons/year in the USA (0.1-0.2% of the general population). In Europe, the figures are very similar. In 90% of cases, sudden death has an arrhythmic cause. Prevention of Sudden Cardiac Death (SCD) constitutes one of the most important challenges of modern cardiology. In order to make a real progress in this field it is crucial to precisely identify increased risk for serious ventricular tachyarrhythmias. In this study the effectiveness of different methods of the non-linear analysis (NLA) of ECG in the risk stratification of patients with ventricular arrhythmias is evaluated, and these non-invasive parameters are correlated with the results of invasive electrophysiological study (EPS). We evaluated 25 patients with history of cardiac arrest, syncope, sustained or nonsustained ventricular tachycardia (VT). The study group was compared with a control group of 25 healthy subjects. All patients underwent both electrophysiologic study (EPS) and non-linear analysis (NLA) of ECG. Patients were classified through the application of a clustering procedure to the whole set of functions, and a comparison between the results of non-linear analysis of ECG and EPS was performed. Results are presented and discussed

Non-invasive assessment of risk for severe tachyarrhythmias by means of non-linear analysis techniques

Sudden death remains a phenomenon of disturbing proportions, displaying a mean incidence of 300,000-350,000 persons/year in the USA (0.1-0.2% of the general population). In Europe, the figures are very similar. In 90% of cases, sudden death has an arrhythmic cause. Prevention of Sudden Cardiac Death (SCD) constitutes one of the most important challenges of modern cardiology. In order to make a real progress in this field it is crucial to precisely identify increased risk for serious ventricular tachyarrhythmias. In this study the effectiveness of different methods of the non-linear analysis (NLA) of ECG in the risk stratification of patients with ventricular arrhythmias is evaluated, and these non-invasive parameters are correlated with the results of invasive electrophysiological study (EPS). We evaluated 25 patients with history of cardiac arrest, syncope, sustained or nonsustained ventricular tachycardia (VT). The study group was compared with a control group of 25 healthy subjects. All patients underwent both electrophysiologic study (EPS) and non-linear analysis (NLA) of ECG. Patients were classified through the application of a clustering procedure to the whole set of functions, and a comparison between the results of non-linear analysis of ECG and EPS was performed. Results are presented and discussed

Effects of a salsobromoiodine water on patients treated with photodynamic therapy for acne

Skripsi ini mengkaji tentang Arsitektur Masjid Jami’ Gresik. Adapun masalah yang dibahas pada skripsi ini adalah sebagai berikut: 1) Bagaimana latar belakang fungsi pembangunan Masjid Jami’? 2) Bagaimana dinamika peradaban Islam diwilayah sekitar masjid Jami’ Gresik? 3) Apa makna yang terdapat dalam arsitektural Masjid Jami’ Gresik ? Untuk menjawab permasalahan tersebut, penulis menggunakan metode sejarah. Metode ini menggunakan empat tahap penelitian yaitu, Heuristik (Pengumpulan sumber), Verifikasi (Kritik Sumber), Interpretasi (Penafsiran Sumber), dan Historiografi (Penulisan Sejarah). Penelitian ini menggunakan pendekatan etnografi, pendekatan ini bertujuan mendapatkan deskripsi dan analisis mendalam berkaitan dengan perubahan sosial dan kebudayaan manusia. Serta menyajikan fakta secara sistematis tentang obyek yang diteliti yaitu Analisis, Makna dan Simbol dari Arsitektur Masjid Jami’ Gresik. Adapun teori yang digunakan dalam skripsi ini adalah Continuity and Change. Dengan teori ini penulis berharap dapat menguraikan analisis, makna dan simbol arsitektur Masjid Jami’ Gresik. Dengan rumusan yang ada serta dari beberapa penelusuran yang yang penuis lakukan dari sumber-sumber primer dan sekunder, membuktikan bahwa: 1) Masjid Jami’Gresik awalnya merupakan mushola kecil yang dibangun pada masa islamisasi Maulana Malik Ibrahim. Awal mulanya, latar belakang fungsi pembangunan Masjid Jami’Gresik adalah tidak lain untuk menampung jamaah yang semakin bertambah banyak dan tersebar diberbagai wilayah; 2) Masjid Jami’ Gresik merupakan bagian dari tata letak kota yang sudah ada sejak masa awal penyebaran Islam di Indonesia; 3) Masjid Jami’ Gresik merupakan salah satu masjid tua yang ada di Kabupaten Gresik, keberadaannya dijadikan sebagai warisan budaya

Labial piercing resulting in gingival recession. A case series

Several complications of oral piercing have been recently reported in the medical and dental literature. Even though few people have had problems related to oral piercing, dentists should familiarise themselves with the potential associated oral and dental problems. We present three cases of young people with gingival recession in the mandibular incisor area related to labial piercing. The clinical examination and the dental history of the three cases revealed the relationship between the gingival recession and the presence of labial piercing. In particular, a stud in the lower lip was held in place by a metal disk on the inner labial mucosa in each case. The metal disk was in close proximity to the mandibular front teeth and it would appear that it was responsible for local trauma and recession. This case series reinforces previously reported concerns regarding the practice of piercing and the role of the dentist, both in advising patients with oral or facial piercing and in the treatment of related oral, gingival and dental problems

Data Mining methods for the stratification of the arrhythmic risk in young and master athletes

The paper describes the data mining procedures concerning ECG signals and other cardiovascular blood parameters collected at the Ospedale Maggiore di Crema to evaluate the cardiovascular response to exercise in young and master athletes, compared with control groups of untrained subjects. After recruiting four groups of healthy athletes and sedentary subjects, with age under and over 40, we analyzed the collected ECG and cardiovascular data by means of clustering techniques and Artificial Neural Networks, obtaining cross-validated classifications and significant variable differences among clusters. We could establish some important relationships between physical activity, age, sex, and cardiovascular parameters. In particular the existence of significant differences in the cardiovascular status of these groups was shown, depending in particular on the MSE1, PNN20, VO and FC variables. This will make it possible to follow the subjects examining the variability of these parameters over time, in order to identify indicators of arrythmic risk that may help to prevent possibly fatal cardiac events