Heart failure & cardiomyopathies

The cardiac microcurrent (C-MIC) II follow-up study: safety and efficacy results 12 months after deactivation of cardiac microcurrent therapy

Eur J Heart FailPublished Prospective follow-up study

Authors' conclusion

Among patients previously treated with C-MIC device, improvements in LVEF, 6MWD, NYHA class and KCCQ-OSS were sustained, with a favorable safety profile 12 months post-deactivation.

Study context

Population
Patients with non-ischemic heart failure with reduced ejection fraction (HFrEF) previously treated with 6 months of cardiac microcurrent (C-MIC) therapy, after device deactivationof 32 eligible
Participants
31 patients
Outcome
Safety: all-cause, CV and device-related mortality and hospitalizations, and adverse events (AEs)
Follow-up
12 months post-deactivation
Methodological detailssingle-group
  • Single-group

Main finding

As reported in the abstract

Safety

Hospitalized

3

10%

Died

1

3%

Device-related hospitalizations or deaths

0

Device-related AE (resolved completely)

1

Observational data: associations, not effects.

Secondary outcomes

OutcomeChange (%) (95% CI)P value
LVEF change · 18 months18 monthsvs 6 months−0.1 (−2-2)P = 0.87
OutcomeChange (95% CI)P value
KCCQ-OSS change · 18 months18 monthsvs 6 months−2 (−8-4)P = 0.49
OutcomeChange (m) (95% CI)P value
6MWD change · 18 months18 monthsvs 6 months−31 (−56- −7)P = 0.013
OutcomeEstimateP value
LVEF change · 18 months18 months vs Pre-implantationchange +6 % (95% CI 5–8)P < 0.0001
KCCQ-OSS change · 18 months18 months vs Pre-implantationchange +43 points (95% CI 36–49)P < 0.0001
6MWD change · 18 months18 months vs Pre-implantationchange +150 m (95% CI 109–191)P < 0.0001

New York Heart Association (NYHA) class · 18 months

≥1-class improvement sustained
77%

Device reactivation · 18 months

Required device reactivation
3 (10%)

Original publication

The C-MIC II follow-up study: safety and efficacy results 12 months after deactivation of cardiac microcurrent therapy. Eur J Heart Fail. Published 26 August 2026. doi:10.1093/ejhf/xuag274

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