unexpectedly slow recruitment rate

A randomized pilot study of spinal cord stimulation in patients with chronic heart failure aiming to show whether this therapy impacts central haemodynamic and autonomic regulations.

Patients will be randomized (1:1) for spinal cord stimulation as an addition to optimal guidelines-driven management or to control group on optimal management only. Spinal cord stimulation will be performed for 30 days, and outcome measures will be testes before stimulation, after 30 days stimulation and after 30 days of further follow-up. The control group will be studied at baseline and after 30 days only.

Inclusion Criteria:

1. Patients with chronic heart failure II-III class (NYHA);
2. Age 18-70 years;
3. Left ventricle ejection fraction ≤35%;
4. Optimal heart failure management according to the guidelines;
5. Signed informed consent

Exclusion Criteria:

1. Heart transplant list;
2. Acute conditions, including systemic infection;
3. Reversible cause of heart failure (thyroid gland diseases, alcoholic intoxication etc);
4. Planned elective heart surgery or intervention;
5. Recent (3 months) myocardial infarction, coronary intervention;
6. Heart failure decompensation;
7. Implanted cardiac resynchronization device < 6 months ago;
8. Contraindications for lumbal puncture or placement of a spinal cord pacing electrode;
9. Permanent atrial fibrillation;
10. Stroke or TIA < 6 months ago;
11. Pulmonary thromboembolist < 3 months ago;
12. Hypertrophic cardiomyopathy with obstruction;
13. Angina III-IV class, or congestive heart failure IV class;
14. Participation in any other clinical trial;
15. Women of childbearing possibility without appropriate contraception, pregnant, or breastfeeding women.