Patients' Characteristics and Clinical Course of Hypertrophic Cardiomyopathy in a Regional Japanese Cohortã- Results From Kochi RYOMA Study.
Circ J
; 82(3): 824-830, 2018 02 23.
Article
in En
| MEDLINE
| ID: mdl-29332907
ABSTRACT
BACKGROUND:
There have been few studies on the clinical course of hypertrophic cardiomyopathy (HCM) in a community-based patient cohort in Japan.MethodsâandâResults:
In 2004, we established a cardiomyopathy registration network in Kochi Prefecture (the Kochi RYOMA study) that consisted of 9 hospitals, and finally, 293 patients with HCM were followed. The ages at registration and at diagnosis were 63±14 and 56±16 years, respectively, and 197 patients (67%) were male. HCM-related deaths occurred in 23 patients during a mean follow-up period of 6.1±3.2 years. The HCM-related 5-year survival rate was 94%. In addition, a total of 77 cardiovascular events that were clinically severe occurred in 70 patients, and the HCM-related 5-year event-free rate was 80%. Multivariate Cox proportional hazards model analysis showed that the presence of NYHA class III at registration was a significant predictor of HCM-related deaths and that the presence of atrial fibrillation, lower fractional shortening and presence of left ventricular outflow tract obstruction in addition to NYHA class III were significant predictors of cardiovascular events.CONCLUSIONS:
In our unselected registry in an aged Japanese community, HCM mortality was favorable, but one-fifth of the patients commonly suffered from HCM-related adverse cardiovascular events during the 5-year follow-up period. Careful management of HCM patients is needed, particularly for those with the above-mentioned clinical determinants.Key words
Full text:
1
Database:
MEDLINE
Main subject:
Cardiomyopathy, Hypertrophic
/
Cardiovascular Diseases
Type of study:
Clinical_trials
/
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Adult
/
Aged
/
Humans
/
Middle aged
Country/Region as subject:
Asia
Language:
En
Journal:
Circ J
Journal subject:
ANGIOLOGIA
/
CARDIOLOGIA
Year:
2018
Type:
Article