The aim of this study is to report and describe cardiac manifestations associated with IMD in a cohort of patients followed in a reference center for rare diseases (Lausanne University Hospital, CHUV) from 2017-2020.
Inherited metabolic diseases (IMD) are genetic disorders resulting from an enzyme defect and/or transport proteins in metabolic pathways affecting proteins, fat, carbohydrate metabolism or impaired organelle function. As IMDs can affect the primary sources of energy (glycogen, fatty acids), they can lead to cardiac dysfunction. Although most of IMDs are multisystemic diseases, in some cases, the cardiac dysfunction they cause is the main clinical feature and source of major complications which will determine the prognosis, like heart failure, ventricular arrythmias or even sudden death. Information regarding cardiac manifestations in adult IMDs is currently scarce and little is known about their clinical and radiological characteristics. A database was created in 2017 including all patients with IMD followed at the Adult Metabolic Clinic in the CHUV. This database was part of a protocol submitted and approved by the Ethics committee (# 2017-02328). The results of this first analysis were published in the Journal of Orphan Rare Diseases. Investigators will use this database to identify all the patients who had cardiac examination. Only patients from the Lausanne University Hospital followed jointly with the Division of Cardiology will be included in the analysis. Electronic and paper patient charts from the Division of Genetic Medicine and Division of Cardiology (Lausanne University Hospital) will be reviewed for type of IMD and cardiac investigations (cardiac ultrasound, multiple resonance Imaging, electrocardiogram). All variables will be entered in an excel database.
Study Type
OBSERVATIONAL
Enrollment
30
Lausanne University Hospital
Lausanne, Canton of Vaud, Switzerland
Specific diagnosis of Inborn Errors of Metabolism listed by their frequency
Clinical outcome
Time frame: Day 1
Age at diagnosis (years/months)
Clinical outcome
Time frame: Day 1
Current age (years/months)
Clinical outcome
Time frame: through study completion, an average of 1 year
Weight (kg)
Clinical outcome
Time frame: through study completion, an average of 1 year
Height (cm)
Clinical outcome
Time frame: through study completion, an average of 1 year
BMI (kg/m^2)
Clinical outcome. Weight and height will be combined to report BMI
Time frame: through study completion, an average of 1 year
Cardiac involvement
Type of complications (restrictive cardiomyopathy, hypertrophic cardiomyopathy, dilated cardiomyopathy, arrythmia, heart failure, valvlulopathy, cardiomegaly, thrombosis)
Time frame: 3 years
Left ventricular mass (g/m^2)
Cardiac ultrasound and multiple resonance imaging description of left ventricular mass
Time frame: 3 years
Left ventricular volume (cc/m^2)
Cardiac ultrasound and multiple resonance imaging description of left ventricular volume
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Time frame: 3 years
Right ventricular volume (cc/m^2)
Cardiac ultrasound and multiple resonance imaging description of right ventricular volume
Time frame: 3 years
Left ventricular diameter (mm)
Cardiac ultrasound and multiple resonance imaging description of left ventricular diameter
Time frame: 3 years
Left ventricular ejection fraction (%)
Cardiac ultrasound and multiple resonance imaging description of left ventricular ejection fraction
Time frame: 3 years
Right ventricular ejection fraction (%)
Cardiac ultrasound and multiple resonance imaging description of right ventricular ejection fraction
Time frame: 3 years
aortic root diameter (mm)
Cardiac ultrasound and multiple resonance imaging description of aortic root diameter
Time frame: 3 years
Additional cardiac investigations
ECG-QT interval
Time frame: 3 years
Specific treatment for inherited metabolic diseases
Treatment specific to each diseases including ammonia scavenger, enzyme replacement therapy, vitamin cofactors
Time frame: 3 years
Gender (Male/Female)
Demography outcome
Time frame: Day 1