Key result
Right atrial appendage noradrenaline content was significantly higher in patients with ischaemic heart disease (2.81 microng/g) than in those with atrial septal defect or heart failure (P<0.001).
Why the study?
Does right atrial appendage noradrenaline content differ between patients with ischaemic heart disease and those with other cardiac conditions?
Observational (n=47)
Does right atrial appendage noradrenaline content differ between patients with ischaemic heart disease and those with other cardiac conditions?
Patients with ischaemic heart disease have significantly higher auricular noradrenaline content compared to those with atrial septal defect or congestive heart failure, which may contribute to ischaemia-related metabolic and systemic changes.
Elevated right atrial noradrenaline in ischaemic heart disease should not yet change practice; leaves open its mechanistic or biomarker role.
The noradrenaline (NA) content (mean +/- S.D.) of tissue samples from the right atrial appendage in 19 patients with ischaemic heart disease (IHD) was 2.81 +/- 0.94 microng/g and in 7 patients with valvular heart disease (VHD) 2.79 +/- 1.12 microng/g. In 10 patients with uncomplicated atrial septal defect (ASD) the NA content was 1.64 +/- 0.32 microng/g and in 11 patients with congestive heart failure (CHF) 0.75 +/- 0.41 microng/g. The difference in NA content between the IHD group and the ASD and CHF groups is significant (p is less than 0.001). Small amounts of adrenaline and dopamine were found in all groups. There was no significant correlation between auricular NA content and either systemic diastolic blood pressure. The relatively high level of NA in the IHD group is assumed to be a contributory factor in the intracellular metabolic as well as in the systemic changes typical of ischaemia and infarction.
No takes yet. Share an insight, caveat, or question.
Penttilä et al. (1977) conducted an observational in Ischaemic heart disease (n=47). Ischaemic heart disease vs. Atrial septal defect and congestive heart failure was evaluated on Noradrenaline (NA) content of tissue samples from the right atrial appendage (p=<0.001). Right atrial appendage noradrenaline content was significantly higher in patients with ischaemic heart disease (2.81 microng/g) than in those with atrial septal defect or heart failure (P<0.001).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: