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Articles (92)
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1

Photocell Contact Mat: A New Instrument to Measure Contact and Flight Times in Running

Viitasalo, Jukka T., Luhtanen, Pekka, Mononen, Harri V., Norvapalo, Kare, Paavolainen, Leena, Salonen, Matti

Journal:

Journal of Applied Biomechanics

Année:

1997

Langue:

english

Fichier:

PDF, 3.58 MB

english, 1997

2

Molecular genetics of the long QT syndrome: Two novel mutations of the KVLQT1 gene and phenotypic expression of the mutant gene in a large kindred

Kirsi Saarinen, Heikki Swan, Katariina Kainulainen, Lauri Toivonen, Matti Viitasalo, Kimmo Kontula

Journal:

Année:

1998

Langue:

english

Fichier:

PDF, 213 KB

english, 1998

3

Survey of the coding region of the HERG gene in long QT syndrome reveals six novel mutations and an amino acid polymorphism with possible phenotypic effects

Päivi Laitinen, Heidi Fodstad, Kirsi Piippo, Heikki Swan, Lauri Toivonen, Matti Viitasalo, Jaakko Kaprio, Kimmo Kontula

Journal:

Année:

2000

Langue:

english

Fichier:

PDF, 24 KB

english, 2000

4

Forearm tremor during isometric elbow flexion

Jukka T. Viitasalo, Sirpa Mikkonen, Matti Salonen, Ossi Aura, Jan Gajewski, Andrzej Wit

Journal:

Journal of Biomechanics

Année:

1992

Langue:

english

Fichier:

PDF, 124 KB

english, 1992

5

Postmyocardial Infarction Patients Susceptible to Ventricular Tachycardia Show Increased T Wave Dispersion Independent of Delayed Ventricular Conduction

LASSE OIKARINEN, MATTI VIITASALO, PETRI KORHONEN, HEIKKI VÄÄNÄNEN, HELENA HÄNNINEN, JUHA MONTONEN, MARKKU MÄKIJÄRVI, TOIVO KATILA, LAURI TOIVONEN

Journal:

Journal of Cardiovascular Electrophysiology

Année:

2001

Langue:

english

Fichier:

PDF, 168 KB

english, 2001

6

Search for cardiac calcium cycling gene mutations in familial ventricular arrhythmias resembling catecholaminergic polymorphic ventricular tachycardia

Annukka Marjamaa, Päivi Laitinen-Forsblom, Annukka M Lahtinen, Matti Viitasalo, Lauri Toivonen, Kimmo Kontula, Heikki Swan

Journal:

BMC Medical Genetics

Année:

2009

Langue:

english

Fichier:

PDF, 954 KB

english, 2009

7

Linkage of the long QT syndrome to the short arm of chromosome 11: use of five highly polymorphic markers towards more detailed localization of the mutant gene

Katariina Kainulainen, Heikki Swan, Helena Miettinen, Matti Viitasalo, Liisa Rovamo, Lauri Toivonen, Kimmo Kontula

Journal:

Année:

1995

Langue:

english

Fichier:

PDF, 433 KB

english, 1995

8

Magnetocardiographic QT dispersion during cardiovascular autonomic function tests

Petri Haapalahti, Markku Mäkijärvi, Petri Korhonen, Panu Takala, Juha Montonen, Yrjö Salorinne, Lasse Oikarinen, Matti Viitasalo, Lauri Toivonen

Journal:

Basic Research in Cardiology

Année:

2000

Langue:

english

Fichier:

PDF, 58 KB

english, 2000

9

Tremor in elbow flexion with reference to some anthropometric and muscle structure variables

Jukka T. Viitasalo, Sirpa Mikkonen, Matti Salonen, Ossi Aura, Jan Gajewski, Adrzej Wit

Journal:

Journal of Biomechanics

Année:

1992

Langue:

english

Fichier:

PDF, 124 KB

english, 1992

10

Comparison of QT peak and QT end interval responses to autonomic adaptation in asymptomatic LQT1 mutation carriers

Petri Haapalahti, Matti Viitasalo, Merja Perhonen, Heikki Väänänen, Markku Mäkijärvi, Heikki Swan, Lauri Toivonen

Journal:

Clinical Physiology and Functional Imaging

Année:

2011

Langue:

english

Fichier:

PDF, 133 KB

english, 2011

11

The Performance of the Probability Density Function in Differentiating Supraventricular from Ventricular Rhythms

LAURI TOIVONEN, MATTI VIITASALO, ANTERO JÄRVINEN

Journal:

Pacing and Clinical Electrophysiology

Année:

1992

Langue:

english

Fichier:

PDF, 284 KB

english, 1992

12

Magnetocardiographic QT Interval Dispersion in Postmyocardial Infarction Patients with Sustained Ventricular Tachycardia: Validation of Automated QT Measurements

LASSE OIKARINEN, MIKA PAAVOLA, JUHA MONTONEN, MATTI VIITASALO, MARKKU MÄKIJÄRVI, LAURI TOIVONEN, TOIVO KATILA

Journal:

Pacing and Clinical Electrophysiology

Année:

1998

Langue:

english

Fichier:

PDF, 4.01 MB

english, 1998

13

Effects of Epinephrine on Right Ventricular Monophasic Action Potentials in the LQT1 Versus LQT2 Form of Long QT Syndrome: Preferential Enhancement of “Triangulation” in LQT1

MATTI VIITASALO, KRISTIAN J. PAAVONEN, HEIKKI SWAN, KIMMO KONTULA, LAURI TOIVONEN

Journal:

Pacing and Clinical Electrophysiology

Année:

2005

Langue:

english

Fichier:

PDF, 183 KB

english, 2005

14

Ventricular Repolarization and Heart Rate Responses During Cardiovascular Autonomic Function Testing in LQT1 Subtype of Long QT Syndrome

PETRI HAAPALAHTI, MATTI VIITASALO, MERJA PERHONEN, MARKKU MÄKIJÄRVI, HEIKKI VÄÄNÄNEN, LASSE OIKARINEN, ANNA-MARI HEKKALA, YRJÖ SALORINNE, HEIKKI SWAN, LAURI TOIVONEN

Journal:

Pacing and Clinical Electrophysiology

Année:

2006

Langue:

english

Fichier:

PDF, 258 KB

english, 2006

15

Interlead Difference in QT Interval Rate Adaptation During Exercise in Coronary Artery Disease Patients Susceptible to Ventricular Fibrillation

Lasse Oikarinen, Lauri Toivonen, Matti Viitasalo

Journal:

Annals of Noninvasive Electrocardiology

Année:

2000

Langue:

english

Fichier:

PDF, 720 KB

english, 2000

16

Reproducibility of Computerized Measurements of QT Interval from Multiple Leads at Rest and During Exercise

Anna-Mari Hekkala, Heikki Väänänen, Heikki Swan, Lasse Oikarinen, Matti Viitasalo, Lauri Toivonen

Journal:

Annals of Noninvasive Electrocardiology

Année:

2006

Langue:

english

Fichier:

PDF, 359 KB

english, 2006

17

Electrocardiographic Transmural Dispersion of Repolarization in Patients with Inherited Short QT Syndrome

Olli Anttonen, Heikki Väänänen, Juhani Junttila, Heikki V. Huikuri, Matti Viitasalo

Journal:

Annals of Noninvasive Electrocardiology

Année:

2008

Langue:

english

Fichier:

PDF, 1.71 MB

english, 2008

18

Epinephrine Bolus Test in Detecting Long QT Syndrome Mutation Carriers with Indeterminable Electrocardiographic Phenotype

Anna-Mari Hekkala, Heikki Swan, Matti Viitasalo, Heikki Väänänen, Lauri Toivonen

Journal:

Annals of Noninvasive Electrocardiology

Année:

2011

Langue:

english

Fichier:

PDF, 273 KB

english, 2011

19

The Effect of Antihistamine Cetirizine on Ventricular Repolarization in Congenital Long QT Syndrome

ANNA-MARI HEKKALA, HEIKKI SWAN, HEIKKI VÄÄNÄNEN, MATTI VIITASALO, LAURI TOIVONEN

Journal:

Journal of Cardiovascular Electrophysiology

Année:

2007

Langue:

english

Fichier:

PDF, 79 KB

english, 2007

20

Provocation of ventricular tachycardia by antimalarial drug halofantrine in congenital long QT syndrome

Lauri Toivonen, Matti Viitasalo, Sinikka Pohjola-Sintonen, Heli Siikamäki, Marja Raatikka

Journal:

Clinical Cardiology

Année:

1994

Fichier:

PDF, 278 KB

1994

21

Reproducibility of computer measurement of maximal isometric strength and electromyography in sedentary middle-aged women

Ari Heinonen, Harri Sievänen, Jukka Viitasalo, Matti Pasanen, Pekka Oja, Ilkka Vuori

Journal:

European Journal of Applied Physiology

Année:

1994

Langue:

english

Fichier:

PDF, 589 KB

english, 1994

22

Aortic distensibility in children with the Marfan syndrome

Aslak Savolainen, Pekka Keto, Pauli Hekali, Liisa Nisula, Ilkka Kaitila, Matti Viitasalo, Veli-Pekka Poutanen, Carl-Gustaf Standertskjöld-Nordenstam, Markku Kupari

Journal:

The American Journal of Cardiology

Année:

1992

Langue:

english

Fichier:

PDF, 414 KB

english, 1992

23

Exclusion of coronary artery disease by exercise thallium-201 tomography in patients with aortic valve stenosis

Markku Kupari, Kari S. Virtanen, Heikki Turto, Matti Viitasalo, Matti Mänttäri, Magnus Lindroos, Eero Koskela, Hannu Leinonen, Sinikka Pohjola-Sintonen, Juhani Heikkilä

Journal:

The American Journal of Cardiology

Année:

1992

Langue:

english

Fichier:

PDF, 1.64 MB

english, 1992

24

Temporal repolarization lability differences among genotyped patients with the long QT syndrome

Kenneth Bilchick, Matti Viitasalo, Lasse Oikarinen, Barry Fetics, Gordon Tomaselli, Heikki Swan, P.äivi J. Laitinen, Heikki Väänänen, Kimmo Kontula, Ronald D. Berger

Journal:

The American Journal of Cardiology

Année:

2004

Langue:

english

Fichier:

PDF, 125 KB

english, 2004

25

Changing Capacity of Electrocardiographic Ventricular Repolarization in Post-Myocardial Infarction Patients With and Without Nonfatal Cardiac Arrest

Jere Järvenpää, Lasse Oikarinen, Petri Korhonen, Heikki Väänänen, Lauri Toivonen, Matti Viitasalo

Journal:

The American Journal of Cardiology

Année:

2007

Langue:

english

Fichier:

PDF, 195 KB

english, 2007

26

Effect of the antimalarial drug halofantrine in the long QT syndrome due to a mutation of the cardiac sodium channel gene SCN5A

Kirsi Piippo, Sam Holmström, Heikki Swan, Matti Viitasalo, Marja Raatikka, Lauri Toivonen, Kimmo Kontula

Journal:

The American Journal of Cardiology

Année:

2001

Langue:

english

Fichier:

PDF, 267 KB

english, 2001

27

Differentiation between LQT1 and LQT2 patients and unaffected subjects using 24-hour electrocardiographic recordings

Matti Viitasalo, Lasse Oikarinen, Heikki Väänänen, Heikki Swan, Kirsi Piippo, Kimmo Kontula, Hal V Barron, Lauri Toivonen, Melvin M Scheinman

Journal:

The American Journal of Cardiology

Année:

2002

Langue:

english

Fichier:

PDF, 160 KB

english, 2002

28

Relation of twelve-lead electrocardiographic T-wave morphology descriptors to left ventricular mass

Lasse Oikarinen, Heikki Väänänen, Juhani Dabek, Maija Kaartinen, Helena Hänninen, Toivo Katila, Markku S Nieminen, Lauri Toivonen, Matti Viitasalo

Journal:

The American Journal of Cardiology

Année:

2002

Langue:

english

Fichier:

PDF, 86 KB

english, 2002

29

Effects of Acute Alcohol Ingestion on Heart Rate Variability in Patients With Documented Coronary Artery Disease and Stable Angina Pectoris

Juhani Rossinen, MD, Matti Viitasalo, MD, Juhani Partanen, MD, Pekka Koskinen, MD, Markku Kupari, MD, Markku S Nieminen, MD

Journal:

The American Journal of Cardiology

Année:

1997

Langue:

english

Fichier:

PDF, 298 KB

english, 1997

30

Dispersions of the QT Interval in Postmyocardial Infarction Patients Presenting With Ventricular Tachycardia or With Ventricular Fibrillation

Lasse Oikarinen MD, Matti Viitasalo MD, Lauri Toivonen MD

Journal:

The American Journal of Cardiology

Année:

1998

Langue:

english

Fichier:

PDF, 63 KB

english, 1998

31

Autonomic modulation of qt intervals in post-myocardial infarction patients with and without ventricular fibrillation

Matti Viitasalo, Jouko Karjalainen, Markku Mäkijärvi, Lauri Toivonen

Journal:

The American Journal of Cardiology

Année:

1998

Langue:

english

Fichier:

PDF, 125 KB

english, 1998

32

QT interval and QT dispersion in endurance athletes and in power athletes using large doses of anabolic steroids

Anu Stolt, Tuomo Karila, Matti Viitasalo, Matti Mäntysaari, Urho M Kujala, Jouko Karjalainen

Journal:

The American Journal of Cardiology

Année:

1999

Langue:

english

Fichier:

PDF, 71 KB

english, 1999

33

Effects of cardiovascular autonomic function tests on QT dispersion in the 12-lead electrocardiogram of healthy patients

Petri Haapalahti, Markku Mäkijärvi, Juha Montonen, Petri Korhonen, Yrjö Salorinne, Lasse Oikarinen, Matti Viitasalo, Lauri Toivonen

Journal:

Journal of Electrocardiology

Année:

2000

Langue:

english

Fichier:

PDF, 167 KB

english, 2000

34

Ambulatory ECG Recording in Patients Referred because of Syncope or Dizziness

Risto Kala, Matti T. Viitasalo, Lauri Toivonen, Antti Eisalo

Journal:

Journal of Internal Medicine

Année:

1982

Langue:

english

Fichier:

PDF, 479 KB

english, 1982

35

β1-Adrenergic receptor polymorphisms, QTc interval and occurrence of symptoms in type 1 of long QT syndrome

Kristian J. Paavonen, Heikki Swan, Kirsi Piippo, Päivi Laitinen, Heidi Fodstad, Seppo Sarna, Lauri Toivonen, Kimmo Kontula, Matti Viitasalo

Journal:

International Journal of Cardiology

Année:

2007

Langue:

english

Fichier:

PDF, 298 KB

english, 2007

36

Electrocardiographic transmural dispersion of repolarization in patients with inherited short QT syndrome

Olli Anttonen, Juhani Junttila, H. Väänänen, Heikki Huikuri, Matti Viitasalo

Journal:

International Journal of Cardiology

Année:

2007

Langue:

english

Fichier:

PDF, 72 KB

english, 2007

37

Interventricular difference of electrocardiographic repolarization times in patients with arrhythmogenic right ventricular dysplasia

Petri Haapalahti, Matti Viitasalo, Maija Kaartinen, Markku Mäkijärvi, Lauri Toivonen

Journal:

International Journal of Cardiology

Année:

2007

Langue:

english

Fichier:

PDF, 64 KB

english, 2007

38

Sudden sympathetic activation and electrocardiographic interventricular dispersion of repolarization in type 1 long QT syndrome

Petri Haapalahti, Matti Viitasalo, Merja Perhonen, Markku Mäkijärvi, Heikki Väänänen, Lasse Oikarinen, Yrjö Salorinne, Heikki Swan, Lauri Toivonen

Journal:

International Journal of Cardiology

Année:

2007

Langue:

english

Fichier:

PDF, 70 KB

english, 2007

39

Relation of QT interval and QT dispersion to regression of echocardiographic and electrocardiographic left ventricular hypertrophy in hypertensive patients: the Losartan Intervention For Endpoint Reduction (LIFE) study

Lasse Oikarinen, Markku S Nieminen, Lauri Toivonen, Matti Viitasalo, Kristian Wachtell, Vasilios Papademetriou, Sverker Jern, B.jörn Dahlöf, Richard B Devereux, Peter M Okin

Journal:

American Heart Journal

Année:

2003

Langue:

english

Fichier:

PDF, 108 KB

english, 2003

40

Risk stratification in Brugada syndrome

Kathryn A Glatter, Nipavan Chiamvimonvat, Matti Viitasalo, Qing Wang, Dipika Tuteja

Journal:

Année:

2005

Langue:

english

Fichier:

PDF, 198 KB

english, 2005

41

Measurement of QT interval

Matti Mäntysaari, Jouko Karjalainen, Matti Viitasalo

Journal:

Journal of the American College of Cardiology

Année:

1996

Langue:

english

Fichier:

PDF, 390 KB

english, 1996

42

Electrocardiographic Repolarization During Stress From Awakening on Alarm Call

Lauri Toivonen, Kirsi Helenius, Matti Viitasalo

Journal:

Journal of the American College of Cardiology

Année:

1997

Langue:

english

Fichier:

PDF, 223 KB

english, 1997

43

Effects of Epinephrine and Phenylephrine on QT Interval Dispersion in Congenital Long QT Syndrome

Zhi-hong Sun, Heikki Swan, Matti Viitasalo, Lauri Toivonen

Journal:

Journal of the American College of Cardiology

Année:

1998

Langue:

english

Fichier:

PDF, 115 KB

english, 1998

44

Evaluation of QT interval duration and dispersion and proposed clinical criteria in diagnosis of long QT syndrome in patients with a genetically uniform type of LQT1

Heikki Swan, Kirsi Saarinen, Kimmo Kontula, Lauri Toivonen, Matti Viitasalo

Journal:

Journal of the American College of Cardiology

Année:

1998

Langue:

english

Fichier:

PDF, 138 KB

english, 1998

45

Ambulatory electrocardiographic recording in mild or moderate myotonic dystrophy and myotonia congenita (Thomsen's disease)

Matti T. Viitasalo, Risto Kala, Pauli Karli, Antti Eisalo

Journal:

Journal of the Neurological Sciences

Année:

1983

Langue:

english

Fichier:

PDF, 542 KB

english, 1983

46

Relation between QT intervals and heart rates from 40 to 120 beats/min in rest electrocardiograms of men and a simple method to adjust QT interval values

Jouko Karjalainen, Matti Viitasalo, Matti Mänttäri, Vesa Manninen

Journal:

Journal of the American College of Cardiology

Année:

1994

Langue:

english

Fichier:

PDF, 372 KB

english, 1994

47

Reply

Matti Viitasalo, Matti Mänttäri, Vesa Manninen, Jouko Karjalainen

Journal:

Journal of the American College of Cardiology

Année:

1995

Langue:

english

Fichier:

PDF, 146 KB

english, 1995

48

745-6 Inherited Disorder with Exercise-induced Ventricular Tachycardia and Sudden Death in Young Adults Mimicking Long QT Syndrome

Heikki Swan, Matti Viitasalo, Paivi Heikkila, Lauri Toivonen

Journal:

Journal of the American College of Cardiology

Année:

1995

Langue:

english

Fichier:

PDF, 141 KB

english, 1995

49

Ratio of Late to Early T-Wave Peak Amplitude in 24-h Electrocardiographic Recordings as Indicator of Symptom History in Patients With Long-QT Syndrome Types 1 and 2

Matti Viitasalo, Lasse Oikarinen, Heikki Swan, Kathryn A. Glatter, Heikki Väänänen, Heidi Fodstad, Nipavan Chiamvimonvat, Kimmo Kontula, Lauri Toivonen, Melvin M. Scheinman

Journal:

Journal of the American College of Cardiology

Année:

2006

Langue:

english

Fichier:

PDF, 368 KB

english, 2006

50

Effects of Beta-Blocker Therapy on Ventricular Repolarization Documented by 24-h Electrocardiography in Patients With Type 1 Long-QT Syndrome

Matti Viitasalo, Lasse Oikarinen, Heikki Swan, Heikki Väänänen, Jere Järvenpää, Harri Hietanen, Jouko Karjalainen, Lauri Toivonen

Journal:

Journal of the American College of Cardiology

Année:

2006

Langue:

english

Fichier:

PDF, 407 KB

english, 2006