PMID- 15492308 OWN - NLM STAT- MEDLINE DCOM- 20050512 LR - 20071115 IS - 1524-4539 (Electronic) IS - 0009-7322 (Linking) VI - 110 IP - 17 DP - 2004 Oct 26 TI - Abnormalities of neurohormonal and cardiac autonomic nervous activities relate poorly to functional status in fontan patients. PG - 2601-8 AB - BACKGROUND: Impaired cardiac autonomic nervous activities and increased neurohumoral activities (CANA, NHA) characterize Fontan patients. However, the clinical significance of these changes is not clearly understood. Our purpose was to clarify the clinical significance of the CANA and NHA in stable Fontan patients. METHODS AND RESULTS: We divided 22 atriopulmonary connection (APC) and 75 total cavopulmonary connection (TCPC) patients into 4 subgroups according to New York Heart Association (NYHA) class (1.8+/-0.6) and measured various CANA and NHA indices. All NHA indices were elevated in the symptomatic patients (P<0.001). Natriuretic peptides were higher in the APC than in the TCPC patients, and the hemodynamics showed no correlation with brain natriuretic peptide in the APC patients. Low arterial oxygen saturation and impaired hemodynamics greatly influenced all elevated NHA indices (P<0.01), except for plasma renin activity, in the TCPC patients. Impaired CANA indices did not relate to NYHA class, although surgeries were associated with lower heart rate variability. In addition to poor correlation between NHA and CANA, age and ventricular morphology had no impact on all CANA and NHA indices, except for high norepinephrine in right ventricular Fontan patients. CONCLUSIONS: Although symptomatic Fontan patients exhibit higher NHA, CANA is not related to either NYHA class or NHA. APC itself is responsible for higher natriuretic peptides, and arterial oxygen desaturation has a great impact on elevated NHA in the TCPC patients. These characteristics of the NHA and CANA differ from those of heart failure patients with biventricular physiology. FAU - Ohuchi, Hideo AU - Ohuchi H AD - Department of Pediatrics, National Cardiovascular Center, Osaka, Japan. ouchi.hideo@mayo.edu FAU - Takasugi, Hisashi AU - Takasugi H FAU - Ohashi, Hiroyuki AU - Ohashi H FAU - Yamada, Osamu AU - Yamada O FAU - Watanabe, Ken AU - Watanabe K FAU - Yagihara, Toshikatsu AU - Yagihara T FAU - Echigo, Shigeyuki AU - Echigo S LA - eng PT - Clinical Trial PT - Comparative Study PT - Controlled Clinical Trial PT - Journal Article DEP - 20041018 PL - United States TA - Circulation JT - Circulation JID - 0147763 RN - 0 (Neurotransmitter Agents) SB - IM MH - Adolescent MH - Adult MH - Autonomic Nervous System/*physiopathology MH - Child MH - Child, Preschool MH - Exercise Test MH - Female MH - *Fontan Procedure MH - Heart/*innervation/physiopathology MH - Heart Defects, Congenital/classification/diagnosis MH - Hemodynamics MH - Humans MH - Male MH - Neurotransmitter Agents/*blood MH - Vital Capacity EDAT- 2004/10/20 09:00 MHDA- 2005/05/13 09:00 CRDT- 2004/10/20 09:00 PHST- 2004/10/20 09:00 [pubmed] PHST- 2005/05/13 09:00 [medline] PHST- 2004/10/20 09:00 [entrez] AID - 01.CIR.0000145545.83564.51 [pii] AID - 10.1161/01.CIR.0000145545.83564.51 [doi] PST - ppublish SO - Circulation. 2004 Oct 26;110(17):2601-8. doi: 10.1161/01.CIR.0000145545.83564.51. Epub 2004 Oct 18.