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Parathyroidectomy eliminates arrhythmic risk in primary hyperparathyroidism, as evaluated by exercise test
- Publication Year :
- 2013
- Publisher :
- BIOSCIENTIFICA LTD, 2013.
-
Abstract
- ObjectiveTo investigate whether parathyroidectomy (PTx) reverses risk factors for arrhythmias related to the QT dynamic changes evaluated during bicycle ergometry exercise test (ET).MethodsTwenty-four postmenopausal women with primary hyperparathyroidism (PHPT) (mean age 60.0±8.4 years) and 30 sex- and age-matched controls underwent ET, echocardiography, and biochemical evaluation. The following stages were considered during ET: rest, peak exercise, and recovery. The patients were randomized to two groups: 12 underwent PTx (group A) and 12 were followed-up conservatively (group B). After 6 months, the patients were studied again.ResultsGroups A and B showed no differences in mean baseline biochemical values, echocardiographic parameters, and QTc interval. PHPT patients showed an increased occurrence of ventricular premature beats (VPBs) during ET compared with controls (37.0 vs 6.6%,P=0.03). Serum calcium level was a predictor of VPBs (P=0.05). Mean value of QTc was in the normal range at baseline (group A: 401±16.9; group B: 402.25±13.5 ms) but significantly lower than controls (417.8±25.1 ms,PP=0.03). Physiological reduction of QTc interval from rest to peak exercise was not observed in PHPT patients before surgery. After PTx, group A had a significant reduction in VPBs compared with baseline (at baseline, 5 of 12 vs none of 12 patients after PTx,P=0.03) and a restored normal QT adaptation during ET. Group B showed no significant changes after a 6-month period.ConclusionsPTx reduces the occurrence of VPBs and restored the QTc adaptation during ET.
- Subjects :
- Parathyroidectomy
medicine.medical_specialty
Endocrinology, Diabetes and Metabolism
medicine.medical_treatment
QT interval
Group B
Statistics, Nonparametric
Electrocardiography
Endocrinology
Internal medicine
medicine
Humans
Normal range
Aged
Arrhythmic risk
medicine.diagnostic_test
business.industry
Arrhythmias, Cardiac
General Medicine
Middle Aged
medicine.disease
Hyperparathyroidism, Primary
Ventricular Premature Complexes
Ventricular Premature Complexe
Echocardiography
Exercise Test
Female
Bicycle ergometer
business
Primary hyperparathyroidism
Human
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....11d818d1e6e84e27b6c1804ecc2d4719