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Maija Vikmane, Oskars Kalējs, Ginta Kamzola, Dana Upīte, Madara Ventiņa, Nikolajs Ņesterovičs and Aivars Lejnieks

Abstract

The aim of this study was to evaluate treatment of patients with moderate and severe heart failure (HF) who were resistant to pharmacotherapy in Latvia and to assess the cardiac resynchronisation therapy (CRT) by exploring the predisposing factors which provides CRT efficacy. We accomplished prospective analysis of left ventricle ejection fraction (LVEF) and other parameter changes 12 and 24 months after CRT device implantation, dividing the population into two groups: responders — to whom LVEF improvement was ≥10% and non-responders where ≥ 10% LVEF improvement was not achieved. The study included 50 chronic HF patients with preserved sinus rhythm, who underwent CRT device implantation in Latvia at the Pauls Stradiņš Clinical University Hospital from June 2009 to March 2012. In the group of patients where 12 and 24 months after CRT device implantation LVEF improvement ≥10% was achieved, there were statistically significantly more patients with left bundle branch block (LBBB) QRS morphology, wider QRS complex, nonischemic genesis of HF, and normal systolic blood pressure. Patients with LVEF improvement had more pronounced ventricular dyssynchrony measured by Echo before CRT device implantation and, accordingly, the CRT mode was programmed as left ventricle paced before right ventricle and close to 100% biventricular pacing was achieved and the patient was female.

Open access

Aldis Strēlnieks, Alberts Bērziņš, Māra Karakone, Irina Pupkeviča, Kristīne Jubele, Maija Vikmane, Sandis Sakne, Oskars Kalējs and Aivars Lejnieks

Abstract

Patients with atrial fibrillation are faced with an increased risk of thromboembolic events, myocardial infarction, chronic heart failure and death. For some patients with atrial fibrillation, direct current cardioversion (DCCV) is a strategy that can be used to reacquire sinus rhythm. Our aim was to analyse the most commonly used medications after an electrical cardioversion, the reasons for not using them, the effects of pharmacotherapy on recurrence rates, and compare results with data from studies in 2014. The prospective study includes patients with electrocardiographically confirmed atrial fibrillation who underwent direct current cardioversion, hospitalised at Pauls Stradiņš Clinical University Hospital (Rīga, Latvia). The average age was 64.6 years. 50% of the patients were female. During the six-month study period, 14.3% patients were using amiodarone, 8.3% patients were on etacizine, 7.1% received propafenone, and 57.1% used beta blockers in monotherapy or in combination. Warfarin was used in 28.0% patients, direct oral anticoagulants (DOAC’s) in 29.9%, 21,4% of patients received aspirin and 16.7% did not use any antithrombotic therapy. Comparing the recurrence rate in patients using different antiarrhythmic drugs, amiodarone showed a statistically significant superiority compared to etacizine and propafenone (p = 0.02). The obtained data showed that over four years, the use of anticoagulants increased by 11.6%.