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Author Leslaw Szydlowski

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The Differences in the Diagnostic Profile in Children with Vasovagal Syncope between the Result of Head-Up Tilt Table Test.

Ewelina Kolarczyk, Lesław Szydłowski, Agnieszka Skierska, Grażyna Markiewicz-Łoskot,

(1) Background: The features characterizing vasovagal syncope (VVS) are an important factor in the correct evaluation of diagnostic risk stratification in children and adolescents. The aim of the study was to determine the value of identifying the clinical characteristics in children with VVS. (2) Methods: We made a retrospective analysis ... Read more >>

Int J Environ Res Public Health (International journal of environmental research and public health)
[2020, 17(12):]

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The Repolarization Period during the Head-Up Tilt Test in Children with Vasovagal Syncope.

Ewelina Kolarczyk, Grażyna Markiewicz-Łoskot, Lesław Szydłowski,

BACKGROUND:Electrocardiography (ECG) and the head-up tilt test (HUTT) are vital in clinical work-up in children with vasovagal syncope (VVS). Ventricular repolarization parameters (QT) measured during the HUTT can be indicative of electrical instability; however, these parameters are not frequently assessed. This study aimed to investigate if ventricular repolarization parameters measured ... Read more >>

Int J Environ Res Public Health (International journal of environmental research and public health)
[2020, 17(6):]

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Feasibility and performance of catheter ablation with zero-fluoroscopy approach for regular supraventricular tachycardia in patients with structural and/or congenital heart disease.

Aleksandra Morka, Janusz Śledź, Karol Deutsch, Bartosz Ludwik, Magdalena Zagrodzka, Lesław Szydłowski, Sebastian Stec,

Patients with structural heart disease (SHD) are more difficult to ablate than those with a structurally healthy heart. The reason may be technical problems. We compared periprocedural data in unselected patients (including SHD group) recruited for zero-fluoroscopy catheter ablation (ZF-CA) of supraventricular arrhythmias (SVTs).Consecutive adult patients with atrioventricular nodal reentry ... Read more >>

Medicine (Baltimore) (Medicine)
[2019, 98(41):e17333]

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Electrocardiographic T-wave parameters in families with long QT syndrome.

Grażyna Markiewicz-Łoskot, Ewa Moric-Janiszewska, Bogusław Mazurek, Marianna Łoskot, Mariola Bartusek, Agnieszka Skierska, Lesław Szydłowski,

BACKGROUND:T-wave parameters, especially the Tpeak-Tend interval (TpTe), reflect the total dispersion of repolarization, whose amplification may lead to the development of life-threatening ventricular arrhythmias observed in the long QT syndrome (LQTS). OBJECTIVES:The study attempted to evaluate QT, QTp (Q-Tpeak) and TpTe (Tpeak-Tend) intervals in unaffected and affected blood relatives of ... Read more >>

Adv Clin Exp Med (Advances in clinical and experimental medicine : official organ Wroclaw Medical University)
[2018, 27(4):501-507]

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Usefulness of cutting balloon angioplasty for the treatment of congenital heart defects.

Jacek Kusa, Magdalena Mazurak, Agnieszka Skierska, Leslaw Szydlowski, Pawel Czesniewicz, Lukasz Manka,

BACKGROUND:Patients with complex congenital heart defects may have different hemodynamic prob-lems which require a variety of interventional procedures including angioplasty which involves using high-pressure balloons. After failure of conventional balloon angioplasty, cutting balloon angioplasty is the next treatment option available. The purpose of this study was to evaluate the safety ... Read more >>

Cardiol J (Cardiology journal)
[2018, 25(2):165-170]

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A simplified approach for evaluating sustained slow pathway conduction for diagnosis and treatment of atrioventricular nodal reentry tachycardia in children and adults.

Janusz Sledz, Michal Labus, Mariusz Mazij, Monika Klank-Szafran, Dariusz Karbarz, Bartosz Ludwik, Jacek Kusa, Karol Deutsch, Leslaw Szydlowski, Adrian Mscisz, Jerzy Spikowski, Aleksandra Morka, Tomasz Kameczura, Aleksandra Swietoniowska-Mscisz, Sebastian Stec,

PURPOSE:During incremental atrial pacing in patients with atrioventricular nodal reentrant tachycardia, the PR interval often exceeds the RR interval (PR > RR) during stable 1:1 AV conduction. However, the PR/RR ratio has never been evaluated in a large group of patients with pacing from the proximal coronary sinus and after isoproterenol challenge. ... Read more >>

Adv Med Sci (Advances in medical sciences)
[2018, 63(2):249-256]

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Early results of aortic arch reconstruction and bilateral pulmonary artery banding: modification of the Norwood operation for treatment of hypoplastic left heart syndrome.

Jacek W Pająk, Michał Buczyński, Piotr Stanek, Grzegorz Zalewski, Marek Wites, Lesław Szydłowski, Lidia Tomkiewicz-Pająk,

BACKGROUND:In the period from 2003 to the end of 2015, 96 Norwood I procedures were performed in the Paediatric Heart Surgery Department in Katowice, Poland, in children with hypoplastic left heart syndrome (HLHS). AIM:This paper presents a retrospective analysis of early surgical results. METHODS:The patients consisted of two groups: group ... Read more >>

Kardiol Pol (Kardiologia polska)
[2018, 76(4):770-775]

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Electrocardiographic algorithms to guide the management strategy of idiopathic outflow tract ventricular arrhythmias.

Bartosz Ludwik, Karol Deutsch, Mariusz Mazij, Janusz Śledź, Aleksandra Morka, Michał Labus, Michał Chrabąszcz, Bartosz Szafran, Jerzy Śpikowski, Lesław Szydłowski, Sebastian M Stec,

INTRODUCTION    The current guidelines of the European Society of Cardiology outlined electrocardiographic (ECG) differentiation of the site of origin (SoO) in patients with idiopathic ventricular arrhythmias (IVAs). OBJECTIVES    The aim of this study was to compare 3 ECG algorithms for differentiating the SoO and to determine their diagnostic value for ... Read more >>

(Polish archives of internal medicine)
[2017, 127(11):749-757]

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Preoperative single ventricle function determines early outcome after second-stage palliation of single ventricle heart.

Jacek Pająk, Michał Buczyński, Piotr Stanek, Grzegorz Zalewski, Marek Wites, Lesław Szydłowski, Bogusław Mazurek, Lidia Tomkiewicz-Pająk,

Second-stage palliation with hemi-Fontan or bidirectional Glenn procedures has improved the outcomes of patients treated for single-ventricle heart disease. The aim of this study was to retrospectively analyze risk factors for death after second-stage palliation of single-ventricle heart and to compare therapeutic results achieved with the hemi-Fontan and bidirectional Glenn ... Read more >>

Cardiovasc Ultrasound (Cardiovascular ultrasound)
[2017, 15(1):21]

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Risk factors of immunoglobulin resistance and coronary complications in children with Kawasaki disease.

Elżbieta Berdej-Szczot, Ewa Małecka-Tendera, Tomasz Gawlik, Małgorzata Firek-Pędras, Lesław Szydłowski, Aneta Gawlik,

The risk of immunoglobulin resistance is still likely to occur in Kawasaki disease (KD) despite adequate treatment. The Kobayashi score (KS) is used to predict unresponsiveness to treatment although the usefulness of the score in populations other than Asian seems to be debatable.The analysis of clinical and laboratory parameters predisposing ... Read more >>

Kardiol Pol (Kardiologia polska)
[2017, 75(3):261-266]

Cited: 4 times

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Comparison of the Degree of Exercise Tolerance in Children After Surgical Treatment of Complex Cardiac Defects, Assessed Using Ergospirometry and the Level of Brain Natriuretic Peptide.

Boguslaw Mazurek, Leslaw Szydlowski, Magdalena Mazurek, Grazyna Markiewicz-Loskot, Jacek Pajak, Aleksandra Morka,

Children who underwent surgery for complex congenital heart defects present worse exercise capacity than their healthy peers. In adults and adolescents, heart failure is assessed on the basis of clinical symptoms using the New York Heart Association (NYHA) score, while in an infant Ross scale; heart failure can also be ... Read more >>

Medicine (Baltimore) (Medicine)
[2016, 95(8):e2619]

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Left Ventricular Diastolic Dysfunction Assessed by Conventional Echocardiography and Spectral Tissue Doppler Imaging in Adolescents With Arterial Hypertension.

Aleksandra Morka, Leslaw Szydlowski, Ewa Moric-Janiszewska, Boguslaw Mazurek, Grazyna Markiewicz-Loskot, Sebastian Stec,

Compared to conventional echocardiography, spectral tissue Doppler imaging (s-TDI) allows more precise evaluation of diastolic cardiac function. The purpose of this study was to conduct s-TDI to analyze the slow movement of the left ventricular (LV) myocardium in adolescents with systemic arterial hypertension (HT) and to determine whether patients with ... Read more >>

Medicine (Baltimore) (Medicine)
[2016, 95(8):e2820]

Cited: 4 times

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Validation of Standard and New Criteria for the Differential Diagnosis of Narrow QRS Tachycardia in Children and Adolescents.

Karol Deutsch, Sebastian Stec, Piotr Kukla, Aleksandra Morka, Marek Jastrzebski, Artur Baszko, Maciej Pitak, Janusz Sledz, Kamil Fijorek, Mariusz Mazij, Bartosz Ludwik, Marcin Gubaro, Leslaw Szydlowski,

To establish an appropriate treatment strategy and determine if ablation is indicated for patients with narrow QRS complex supraventricular tachycardia (SVT), analysis of a standard 12-lead electrocardiogram (ECG) is required, which can differentiate between the 2 most common mechanisms underlying SVT: atrioventricular nodal reentry tachycardia (AVNRT) and orthodromic atrioventricular reentry ... Read more >>

Medicine (Baltimore) (Medicine)
[2015, 94(51):e2310]

Cited: 1 time

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Simplified automated right ventricular overdrive pacing for rapid diagnosis of supraventricular tachycardia.

Sebastian Stec, Janusz Sledź, Mariusz Mazij, Bartosz Ludwik, Michał Labus, Jerzy Spikowski, Lesław Szydłowski, Monika Klank-Szafran, Ewa Kraszewska, Adam S Budzikowski,

OBJECTIVES: The purpose of this study was to prospectively evaluate the feasibility and diagnostic value of right ventricular overdrive pacing (RVOP) during supraventricular tachycardia (SVT) using a 2-catheter approach with automatic pacing from the right ventricular inflow (RVIT) and outflow tract (RVOT). METHODS: One hundred and thirty-six consecutive patients (with ... Read more >>

Cardiology (Cardiology)
[2014, 129(2):93-102]

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Feasibility of implementation of a "simplified, No-X-Ray, no-lead apron, two-catheter approach" for ablation of supraventricular arrhythmias in children and adults.

Sebastian Stec, Janusz Śledź, Mariusz Mazij, Małgorzata Raś, Bartosz Ludwik, Michał Chrabąszcz, Arkadiusz Śledź, Małgorzata Banasik, Magdalena Bzymek, Krzysztof Młynarczyk, Karol Deutsch, Michał Labus, Jerzy Śpikowski, Lesław Szydłowski,

Although the "near-zero-X-Ray" or "No-X-Ray" catheter ablation (CA) approach has been reported for treatment of various arrhythmias, few prospective studies have strictly used "No-X-Ray," simplified 2-catheter approaches for CA in patients with supraventricular tachycardia (SVT). We assessed the feasibility of a minimally invasive, nonfluoroscopic (MINI) CA approach in such patients.Data ... Read more >>

J. Cardiovasc. Electrophysiol. (Journal of cardiovascular electrophysiology)
[2014, 25(8):866-874]

Cited: 8 times

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Recanalisation of the left superior caval vein after Fontan procedure: not so rare complication: possibilities of percutaneous closure using various devices.

Jacek Kusa, Leslaw Szydlowski, Ewa Nowakowska, Agnieszka Skierska,

Evaluation of possibilities of percutaneous closure of recanalised left superior caval vein after total cavopulmonary connection.We analysed 19 patients after total cavopulmonary connection catheterised because of a sudden increase of desaturation. In four of them, the recanalisation of the left superior caval vein was identified. For this reason, the balloon ... Read more >>

Cardiol Young (Cardiology in the young)
[2015, 25(3):485-490]

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Dyspnoea related to pre-excitation during sinus rhythm as a new indication for catheter ablation.

Sebastian M Stec, Sebastian Szmit, Lesław Szydłowski, Konrad Dudek, Magdalena Zagrodzka, Marian Futyma, Grzegorz Opolski, Piotr Kułakowski,

Patients with pre-excitation without arrhythmic symptoms are diagnosed as Wolff-Parkinson-White (WPW) pattern.To evaluate the efficacy of radiofrequency ablation (RFA) in patients with a WPW pattern and reported dyspnoea.Five patients (four adults and one adolescent, all female, age 33 ± 15 years) with a WPW pattern were referred due to dyspnoea ... Read more >>

Kardiol Pol (Kardiologia polska)
[2014, 72(7):646-653]

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Analysis of risk factors and prospective evaluation of cardiovascular complications of Kawasaki disease in children: a single centre study.

Elżbieta Berdej-Szczot, Małgorzata Firek-Pędras, Lesław Szydłowski, Joanna Krzystolik-Ładzińska, Katarzyna Klimek, Ewa Małecka-Tendera,

BACKGROUND: Kawasaki disease (KD) remains a diagnostic challenge due to its nonspecific clinical symptoms. Delayed treatment initiation increases the risk of coronary complications. AIM: To evaluate the risk of coronary artery involvement and perform a prospective analysis of its course in children hospitalised due to KD. METHODS: KD was diagnosed ... Read more >>

Kardiol Pol (Kardiologia polska)
[2013, 71(12):1279-1286]

Cited: 1 time

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Rare cardiovascular anomaly: congenital unilateral absence of the pulmonary artery.

Bogusław Mazurek, Lesław Szydłowski, Magdalena Mazurek, Joanna Kohut, Jan Głowacki,

Arch Med Sci (Archives of medical science : AMS)
[2013, 9(6):1162-1164]

Cited: 0 times

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[Paediatric echocardiography in clinical practice. 2012 Recommendations of the Echocardiography Working Group of the Polish Cardiac Society].

Aldona Siwińska, Bożena Werner, Andrzej Rudziński, Wanda Kawalec, Jadwiga Moll, Lesław Szydłowski, Jerzy Stańczyk, Jarosław D Kasprzak, Zbigniew Gąsior, Edyta Plońska-Gościniak, ,

Echocardiography has become the primary imaging tool in the diagnosis and assessment of cardiological disorders in children. The purposes of this paper are to describe indications for paediatric echocardiography, define optimal instrumentation and laboratory setup for paediatric echocardiographic examinations and establish a baseline list of recommended measurements ... Read more >>

Kardiol Pol (Kardiologia polska)
[2012, 70(6):632-640]

Cited: 1 time

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Age-and sex-dependent mRNA expression of KCNQ1 and HERG in patients with long QT syndrome type 1 and 2.

Ewa Moric-Janiszewska, Joanna Głogowska-Ligus, Monika Paul-Samojedny, Ludmiła Węglarz, Grażyna Markiewicz-Łoskot, Lesław Szydłowski,

INTRODUCTION: The main goal of this study was to examine the patient age and sex dependent expression of KCNQ1 and HERG genes that encode potassium channels responsible for the occurrence of long QT syndrome (LQTS). MATERIAL AND METHODS: The study enrolled 43 families whose members suffered from LQTS type 1 ... Read more >>

Arch Med Sci (Archives of medical science : AMS)
[2011, 7(6):941-947]

Cited: 8 times

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Blood pressure regulation and resting heart rate abnormalities in adolescent girls with polycystic ovary syndrome.

Agnieszka Zachurzok-Buczynska, Leslaw Szydlowski, Aneta Gawlik, Krzysztof Wilk, Ewa Malecka-Tendera,

OBJECTIVE: To assess the risk of cardiovascular disease on the basis of biochemical, echocardiographic, and 24-hour blood pressure (BP) monitoring parameters in adolescent girls with polycystic ovary syndrome (PCOS). DESIGN: Cross-sectional study. SETTING: Academic and research institution. PATIENT(S): Thirty-four obese and nonobese girls with PCOS were evaluated and compared with ... Read more >>

Fertil. Steril. (Fertility and sterility)
[2011, 96(6):1519-1525]

Cited: 9 times

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Role of toxicological determinations of amphetamines and cannabinoids in hair of adolescent patients in cardiologic diagnostic management.

Małgorzata Kłys, Lesław Szydłowski, Sebastian Rojek,

BACKGROUND: Parental suspicions that the child may possibly take narcotics may be substantiated by hair analysis, which may not only identify the narcotic abuse profile, but also define the minimum period of narcotic usage. OBJECTIVE: A toxicological hair analysis aiming at detecting the presence of amphetamines and cannabinoids in children ... Read more >>

Cardiol Young (Cardiology in the young)
[2012, 22(1):8-12]

Cited: 0 times

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Expression of genes KCNQ1 and HERG encoding potassium ion channels Ikr, Iks in long QT syndrome.

Ewa Moric-Janiszewska, Joanna Głogowska-Ligus, Monika Paul-Samojedny, Sławomir Smolik, Michał Woźniak, Grażyna Markiewicz-Łoskot, Urszula Mazurek, Ludmiła Węglarz, Lesław Szydłowski,

The KCNQ1 and HERG genes mutations are responsible for specific types of congenital long QT syndrome (LQT).To examine the expression of KCNQ1 and HERG genes that encode potassium channels (rapid and slow) responsible for the occurrence of particular types of LQT syndrome. The study also attempted to prove that beta-actin ... Read more >>

Kardiol Pol (Kardiologia polska)
[2011, 69(5):423-429]

Cited: 1 time

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The diagnosis, clinical course and follow-up of children with cardiac tumours - a single-centre experience.

Joanna Kohut, Joanna Krzystolik-Ładzińska, Lesław Szydłowski, Jolanta Smoleńska-Petelenz, Grazyna Giec-Fuglewicz, Jacek Pajak,

BACKGROUND: Rhabdomyoma is the most frequent primary cardiac tumour in children (about 50% of all cardiac neoplasms in this population). Fibroma, myxoma, teratoma and haemangioma are less frequent. AIM: To investigate the clinical presentation, diagnosis and follow-up of children diagnosed with cardiac tumours in our department between 1993 and 2008. ... Read more >>

Kardiol Pol (Kardiologia polska)
[2010, 68(3):304-309]

Cited: 5 times

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