Electrocardiographic changes in an athlete before and after detraining

Introduction: Surgical repair in anomalous aortic origin of a coronary artery (AAOCA) aims at mitigating the risk of sudden cardiac death in a subset of patients (pts). The pattern and behavior of electrocardiogram (ECG) changes in a large cohort of these pts is lacking. We aim to describe post-operative (post-op) ECG changes in this population with medium term follow up (f/u). Methods: Observational study evaluating ECGs before and after surgery to describe peri-operative changes through f/u. All patients <21 years (yrs) with AAOCA were prospectively evaluated and managed following a standardized approach from 12/2012-11/2019. A subset underwent repair given high-risk features. ECGs were reviewed at 5 specific time intervals from pre-operative (pre-op) to 90-day post-op f/u. Significant findings included new ST elevation (STE), T wave inversion (TWI) and/or new q waves. Results: A total of 64 pts were identified (median age 13.7 yrs, 64% male). Two patients had evidence of STE and TWI pre-op and were not included. Of 62 pts: 47 (75%) had new STE early post-op and all but 1 had resolution at 90-day f/u; 50 (81%) had no evidence of new TWI or q waves early post-op and 96% of these remained stable at 90-day f/u. Conversely, 12 (19%) had new TWI in the early post-op: 8 had isolated changes (75% resolved at 90 days) and 4 associated with new q waves (50% resolved at 90 days). Including all ECG changes in the total cohort, 92% resolved completely at 90-day f/u. In those pts (8%) with persistent changes, none required late reintervention and all but 1 were cleared for return to exercise. All patients were alive at medium f/u of 4 yrs (IQR 2-6) with normal ventricular function. Conclusions: New STE is a common finding in the early post-op period following repair of AAOCA and is not correlated with persistent ECG changes at 90-day follow up. TWI is infrequently seen but less likely to resolve if associated with new q waves. Despite these changes in the early post-op, clinical outcomes medium-term are excellent.

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Electrocardiographic Changes in Ostium Secundum Atrial Septal Defect- Before and after Shunt Closure- A Retrospective Cohort Analysis

Indian Heart Journal ◽

10.1016/j.ihj.2019.11.068 ◽

2019 ◽

Vol 71 ◽

pp. S34-S35

Author(s):

S. Anbarasan ◽

N. Swaminathan ◽

G. Ravishankar ◽

G.J. Paul ◽

S. Venkatesan ◽

...

Keyword(s):

Atrial Septal Defect ◽

Retrospective Cohort ◽

Septal Defect ◽

Cohort Analysis ◽

Secundum Atrial Septal Defect ◽

Retrospective Cohort Analysis ◽

Before And After ◽

Electrocardiographic Changes ◽

Shunt Closure

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THE STUDY OF HEMODYNAMICS AND ELECTROCARDIOGRAPHIC CHANGES BEFORE AND AFTER EXERCISE

The Kurume Medical Journal ◽

10.2739/kurumemedj.16.203 ◽

1969 ◽

Vol 16 (4) ◽

pp. 203-218

Author(s):

RYOTARO TANAKA

Keyword(s):

Before And After ◽

Electrocardiographic Changes

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POST-PRANDIAL ELECTROCARDIOGRAPHIC CHANGES BEFORE AND AFTER GASTRECTOMY

Heart ◽

10.1136/hrt.24.2.221 ◽

1962 ◽

Vol 24 (2) ◽

pp. 221-232 ◽

Cited By ~ 1

Author(s):

J. W. Kerr ◽

H. L. Duthie

Keyword(s):

Before And After ◽

Electrocardiographic Changes

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Electrocardiographic changes before and after successful kidney transplantation and associations with cardiovascular and mortality outcomes

Clinical Transplantation ◽

10.1111/ctr.13242 ◽

2018 ◽

Vol 32 (5) ◽

pp. e13242

Author(s):

Hanna Paajanen ◽

Ilkka Helanterä ◽

Kati Kaartinen ◽

Kjell Nikus ◽

Markku Eskola ◽

...

Keyword(s):

Kidney Transplantation ◽

Before And After ◽

Electrocardiographic Changes

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Mechanism of action of honey bee (Apis mellifera L.) venom on different types of muscles

Human & Experimental Toxicology ◽

10.1177/096032719801700311 ◽

1998 ◽

Vol 17 (3) ◽

pp. 185-190 ◽

Cited By ~ 2

Author(s):

Zohour I Nabil ◽

Aida A Hussein ◽

Samy M Zalat ◽

Miran Kh Rakha

Keyword(s):

Apis Mellifera ◽

Blocking Agent ◽

Progressive Increase ◽

Bee Venom ◽

Conduction Disturbances ◽

Before And After ◽

Cardiac Muscles ◽

Electrocardiographic Changes ◽

Perfused Hearts ◽

Depressor Effect

1 The effect of crude honeybee (Apis mellifera)venom on the skeletal, smooth as well as cardiac muscles were studied in this investigation. 2 Perfusion of gastrocnemius-sciatic nerve preparation of frogs with 1 mg/ml venom solution has weakened the mechanical contraction of the muscle without recovery. Blocking of nicotinic receptors with 3 mg/ml flaxedil before bee venom application sustained normal contraction of gastrocnemius muscle. 3 The electrical activity of duodenum rabbits was recorded before and after the application of 1 mg/ml venom solution. The venom has depressed the amplitude of the muscle contraction after 15 min pretreatment with atropine nearly abolished the depressor effect of the venom on smooth muscle. 4 In concentrations from 0.5-2 mg/ml, bee venom caused decrease of heart rate of isolated perfused toad heart. This bradycardia was accompanied by elongation in the P-R interval. A gradual and progressive increase in the R-wave amplitude reflected a positive inotropism of the venom. Application of 5 mg/ml verapamil, a calcium channels blocking agent, abolished the noticed effect of the venom. 5 Marked electrocardiographic changes were produced within minutes of the venom application on the isolated perfused hearts, like marked injury current (elevation or depression of the S-T segment), atrioventricular conduction disturbances and sinus arrhythmias. Atropine and nicotine could decrease the toxic effect of the venom on the myocardium. 6 Results of the present work lead to the suggestion that bee venom is mediated through the peripheral cholinergic neurotransmitter system. General neurotoxicity of an inhibitory nature involving the autonomic as well as neuromuscular system are established as a result of the venom, meanwhile a direct effect on the myocardium membrane stabilization has been suggested.

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Electrocardiographic Changes in Male and Female Amateur Marathon Runners: A Comparison Study

International Journal of Sports Medicine ◽

10.1055/a-1323-3215 ◽

2021 ◽

Author(s):

Zofia Lasocka ◽

Alicja Dąbrowska-Kugacka ◽

Anna Maria Kaleta ◽

Zuzanna Lewicka-Potocka ◽

Anna Faran ◽

...

Keyword(s):

P Wave ◽

Right Atrial ◽

Marathon Runners ◽

Male And Female ◽

Cardiac Adaptation ◽

Before And After ◽

Atrial Enlargement ◽

Electrocardiographic Changes ◽

Exercise Induced ◽

Stage 1

AbstractPhysical training is gaining popularity among amateurs. Males and females exhibit different cardiac adaptation to exercise. The aim of the study was to compare the incidence of electrocardiographic abnormalities before and after the marathon between sexes. 12-lead electrocardiogram was performed in 40 male (39±8 years) and 27 female (40±7 years) amateur runners: 2–3 weeks before (Stage 1) and immediately after (Stage 2) the marathon. Abnormalities in the resting (Stage 1) and exercise (Stage 2) electrocardiograms were compared between sexes. At rest left atrial enlargement was more frequent in females than males (48 vs. 20%; p<0.05). The incidence of right atrial enlargement was significantly more common at Stage 2 than 1, both in men (43 vs. 0%; p<0.001) and in women (48 vs. 4%; p=0.001). Significant increase of P-wave amplitude was found in male runners after the marathon (0.12±0.05 vs. 0.21±0.09 mV; p<0.001 Stage 1 vs. 2), but was absent in females. QTc prolongation was observed in both sexes, however to a higher degree in males (p<0.05 for the interaction stage and sex). Although both male and female amateur marathon runners exhibit abnormalities in resting and exercise electrocardiograms, men present more exercise-induced electrocardiographic changes, which might indicate a higher propensity for post-marathon arrhythmias. Electrocardiographic screening in amateurs should be considered.

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