Clinical Research Directory

Intracoronary Cryotherapy Effect on Stabilization of Vulnerable Plaque in Patients With (N)STEMI or Unstable Angina

The POLARSTAR study is an early safety and feasibility study to evaluate the performance and safety of the CryoTherapy System (CTS) for the treatment of coronary plaque lesions that are not obstructing blood flow but are at high-risk of rupture which would cause a major heart attack. The CTS is used to apply local freezing of the lesion using a balloon catheter, controlled by a console that regulates in- and outflow of a cooling agent into the catheter. The treatment is expected to stabilize the lesion, diminishing the risk of rupture. The study will enrol subjects with acute coronary disease who have suitable coronary lesions. Subjects will be followed for 1 year after the CTS treatment. Baseline identification of lesions will be done using Coronary CT-angiography (CCTA), which will be repeated at 3 and 9 months after procedure.

Evaluation of Effectiveness and Safety of Rotational Atherectomy in Routine Clinical Practice

This study evaluates the effectiveness and safety rotational atherectomy in routine clinical practice.

Safety and Clinical Performance of the Freesolve Resorbable Magnesium Scaffold System

The objective of this study is to assess the safety and efficacy of the Freesolve in the treatment of subjects with up to two de novo lesions in native coronary arteries compared to a contemporary drug eluting stent (DES).

Latvian Early Atherosclerosis Registry

Atherosclerosis and its complications are a global problem. There are several widely known and proven risk factors that promotes atherogenesis in the majority of patients. However, significant proportion of apparently healthy and young patients with cardiovascular disease but yet without recognized atherogenesis promoting risk factors can be observed in clinical practice. It highlights the need of new risk markers for early atherosclerosis diagnostics to prevent serious cardiovascular complications in these patients and in population in general. The interest in the negative impact of genetic variance, gene regulation on atherogenesis is growing. Therefore the purpose of this study is to analyze the impact of genetic variance and microRNA expression on early atherosclerosis development in the population of young, apparently healthy patients with coronary atherosclerosis. The primary hypothesis is that the group of patients with premature atherosclerosis have common genetic variations promoting early atherosclerosis development. The secondary hypothesis is that specific circulating microRNA expression (miR-126, miR-145 and miR-155) correlate with plaque lipid core by near infrared spectroscopy (NIRS) analysis.