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Titolo:
TEMPORARY LOSS OF CARDIAC AUTONOMIC INNERVATION AFTER THE MAZE PROCEDURE
Autore:
VOGT PR; LAROCCA HPB; CANDINAS R; GASSER J; ZUND G; SCHONBECK M; GENONI M; TURINA MI;
Indirizzi:
UNIV ZURICH HOSP,DIV CARDIOVASC SURG,RAMISTR 100 CH-8091 ZURICH SWITZERLAND
Titolo Testata:
European journal of cardio-thoracic surgery
fascicolo: 1, volume: 12, anno: 1997,
pagine: 75 - 81
SICI:
1010-7940(1997)12:1<75:TLOCAI>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEART-RATE-VARIABILITY; CHRONIC ATRIAL-FIBRILLATION; EXERCISE; SINOATRIAL; RESPONSES; DISEASE; REPAIR;
Keywords:
MAZE OPERATION; HEART RATE VARIABILITY; AUTONOMIC DENERVATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
P.R. Vogt et al., "TEMPORARY LOSS OF CARDIAC AUTONOMIC INNERVATION AFTER THE MAZE PROCEDURE", European journal of cardio-thoracic surgery, 12(1), 1997, pp. 75-81

Abstract

Objective: Blunted sinus node response to exercise has been reported after the maze operation. We suggested the autonomic vegetative function of the heart to be disturbed after the maze procedure. Methods: 17 patients, mean age 63 +/- 15 years, with chronic atrial fibrillation for 49 +/- 46 months (range 5-65) underwent the maze procedure during mitral valve surgery. Bicycle stress test, 24-h electrocardiography andheart rate variability were analysed in 11 patients after three and in six after 14 +/- 3 months. Spectral analysis within two frequency bands, vector analysis of the main circular resultant and influence of orthostasis and Valsalva manoeuvre on different R-R intervals were calculated. Results: One patient died from a perioperative ischaemic stroke. At follow-up, all patients were in sinus rhythm. Heart rate reached84 +/- 14%, the mean circular resultant was 60 +/- 48%, the ratio of the longest to the shortest R-R interval during the Valsalva manoeuvrewas 92 +/- 8% and the ratio of maximal to minimal R-R interval after orthostasis was 98 +/- 4% of the age-adjusted normal value. Maximal workload was 116 +/- 31 watts. All patients had abnormal heart rate variability. Heart rate variability was significantly more blunted after three months, than after 14 months (P < 0.05). The minimal heart rate and the difference between the maximal and the minimal heart rate during the 24-h electrocardiography were significantly correlated to the number of normal physiological tests (r = - 0.52; P < 0.05; r = 0.71; P < 0.005); for the maximal heart rate, there was a positive trend only (r = 0.44; P = 0.07). Conclusions: Early after the maze procedure, a nearly total denervation of the sinus node is present, similar as seen after heart transplantation, with partial restoration of the autonomicfunction after one year. The exercise capacity of the patients was satisfactory. (C) 1997 Elsevier Science B.V.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 10:57:13