Spinal cord stimulation in severe angina pectoris

Area of Science:

• Cardiology
• Neuromodulation
• Medical Devices

Background:

• Severe angina pectoris (New York Heart Association classes III-IV) significantly impacts quality of life.
• Patients often have contraindications for traditional open-heart surgery.
• Spinal cord stimulation (SCS) presents a potential alternative therapy.

Purpose of the Study:

• To evaluate the long-term efficacy and safety of spinal cord stimulation (SCS) in patients with severe angina pectoris.
• To assess the impact of SCS on pain, medication intake, quality of life, and cardiac physiology.
• To investigate the antianginal and anti-ischemic effects of SCS.

Main Methods:

• Long-term follow-up of 225 patients treated with SCS since 1985.
• Invasive studies assessing heart muscle lactate metabolism, coronary sinus blood flow, and oxygen demand.
• Holter monitoring to detect arrhythmias and pacing studies to evaluate ischemia masking.

Main Results:

• Significant pain relief, reduced medication needs, and improved quality of life observed in long-term follow-up.
• Demonstrated improvements in heart muscle lactate metabolism, coronary sinus blood flow, and reduced oxygen demand.
• SCS did not induce arrhythmias or mask ischemia during extreme workloads.

Conclusions:

• Spinal cord stimulation (SCS) is an effective treatment for severe angina pectoris in patients unsuitable for surgery.
• SCS provides significant antianginal and anti-ischemic benefits, improving cardiac function and patient well-being.
• The therapy is safe and does not negatively impact cardiac electrical activity or ischemia detection.