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Publication details

Document type
Conference papers

Document subtype
Extended abstract/Short paper

Title
Should children with exercise induced intra-ventricular gradients, be treated with beta-blockers

Participants in the publication
Cotrim C. (Author)
Martins Rui (Author)
Dep. Estatística e Investigação Operacional
CEAUL - Centro de Estatística e Aplicações

Scope
International

Refereeing
Yes

Summary
Background: In our experience, treadmill exercise echocardiography (SE) is feasible and safe in children (C). Regional wall motion abnormalities (RWMA) are of limited usefulness, but Doppler often - (in 39% from 258 previously studied C) - documents significant intraventricular gradients (IVG), occult at rest, and allowing to document a possible explanation for exercise related symptoms, or abnormal resting or stress-ECG findings.\\n\\nPurpose - To assess the effect of ß blockers on the occurrence of IVG, in C, with symptoms or abnormal resting or stress-ECG findings.\\n\\nMethods – We repeated SE in 66 of the 101 C – (with normal echocardiogram at rest) - that developed IVG on exertion, under treatment with ß blockers. These 66 C who repeated the SE under treatment with ß blockers are the study group. 15 (23%) of them were female and the mean age of the group was 14,6 ± 1,7 years old (11 to 17).\\n\\nThey all underwent SE with 2D and Doppler echocardiographic evaluation of, and during treatment with ß blockers.\\n\\nResults: Mean IVG in those 66 C submitted to SE was 105 ± 38 mmHg in the first SE evaluation. In SE evaluation performed under ß blockers, 37 of them didn’t develop IVG and in 29 of them IVG was significantly reduced to a mean IVG of 58 ± 32 mmHg (p< 0,0001). The mean heart rate attained at peak exercise was 178 ± 15 bpm in the first SE evaluation and 157 ± 9 bpm in the evaluation performed under treatment with ß blockers (p<0, 0001). 47 of these C reproduced clinical symptoms (that were indication to SE) of beta-blockers, and only 7 reproduced the symptoms under treatment with beta blockers (p< 0,0001).\\n\\nConclusions: In C with symptoms, abnormal rest or exercise ECG on medical evaluation and IVG on exertion, treatment with oral ß blockers prevented the occurrence of IVG or significantly reduced its magnitude. These changes were associated to significant clinical improvement in 85 % of the symptomatic population.

Date of Publication
2019

Event
European Heart Journal - Cardiovascular Imaging

Publication Identifiers

Address
Austria

Organizers
EuroEcho-2019


Export

APA
Cotrim C., Martins Rui, (2019). Should children with exercise induced intra-ventricular gradients, be treated with beta-blockers. European Heart Journal - Cardiovascular Imaging, -

IEEE
Cotrim C., Martins Rui, "Should children with exercise induced intra-ventricular gradients, be treated with beta-blockers" in European Heart Journal - Cardiovascular Imaging, Austria, 2019, pp. -, doi:

BIBTEX
@InProceedings{44426, author = {Cotrim C. and Martins Rui}, title = {Should children with exercise induced intra-ventricular gradients, be treated with beta-blockers}, booktitle = {European Heart Journal - Cardiovascular Imaging}, year = 2019, pages = {-}, address = {Austria}, publisher = {} }