Heart failure & cardiomyopathies

Identification of Wild-Type Transthyretin Cardiac Amyloidosis in Patients with Carpal Tunnel Syndrome Surgery (CACTuS)

ESC Heart FailPublished Cross-sectional screening study

Authors' conclusion

The study found an ATTRwt prevalence of 8.3% in a population of age and gender-selected patients with a recent history of CTS. The identified patients with ATTRwt had less structural and functional cardiac involvement than clinical ATTRwt controls.

Study context

Population
Patients aged ≥60 years at the time of carpal tunnel syndrome (CTS) surgerymean age 74.5 years, 90% male
Participants
120 patients
Exposure
Screen-detected ATTRwt vs clinical ATTRwt controls
  • Screened ATTRwtn = 10
  • Clinical ATTRwtn = 51reference
Outcome
ATTRwt prevalence on red-flag screening
Methodological detailsmatched comparison with clinical ATTRwt controls
  • Matched comparison with clinical ATTRwt controls

Main finding

As reported in the abstract

ATTRwt prevalence

Suspicion of ATTR raised

67

55.8%

Diagnosed with ATTRwt

10

8.3%

Observational data: associations, not effects.

Further findings

Disease severity, screened vs clinical ATTRwt

Screened ATTRwt predominantly asymptomatic, mildly elevated NT-proBNP, mildly increased left ventricular hypertrophy (LVH), preserved LVEF and systolic longitudinal function; differed significantly from clinical ATTRwt controls
P < 0.001

Original publication

Identification of Wild-Type Transthyretin Cardiac Amyloidosis in Patients with Carpal Tunnel Syndrome Surgery (CACTuS). ESC Heart Fail. Published 3 October 2022. doi:10.1002/ehf2.14173

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