AmyloidosisAmyloidosis, FamilialCardiomyopathiesPrealbuminAmyloid Neuropathies, FamilialShock, SurgicalTechnetium Tc 99m PyrophosphateHeart DiseasesAmyloidCardiomyopathy, RestrictiveEndocardiumBiopsyMyocardiumImmunoglobulin Light ChainsFatal OutcomeEchocardiographyElectrocardiographyGadoliniumSerum Amyloid A ProteinEchocardiography, DopplerMyocytes, CardiacCardiomyopathy, HypertrophicGadolinium DTPAHeart FailurePredictive Value of TestsNatriuretic Peptide, BrainCardiac OutputContrast MediaFamilial Mediterranean FeverMagnetic Resonance ImagingHeartAmyloid NeuropathiesPrognosisCongo RedArrhythmias, CardiacCardiac Surgical ProceduresMutationDeath, Sudden, Cardiacbeta 2-MicroglobulinSerum Amyloid P-ComponentNephrotic SyndromeKidney DiseasesParaproteinemias