Athlete’s Heart vs. Cardiomyopathy · Athlete’s Heart vs. Cardiomyopathy Linda D. Gillam, MD,...
Transcript of Athlete’s Heart vs. Cardiomyopathy · Athlete’s Heart vs. Cardiomyopathy Linda D. Gillam, MD,...
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Athlete’s Heart vs. CardiomyopathyLinda D. Gillam, MD, MPH, FASE
Chair, Department of Cardiovascular MedicineMedical Director, Cardiovascular Service Line
Former Team Cardiologist to the New York Jets
No disclosures
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Sports Cardiology at Morristown
Mat Martinez, MD, FACCDirector of Sports Cardiology
Official Cardiologist to the New York Jets
Questions asked of Echo
• Is increased wall thickness physiologic or pathologic?
• Are increased dimensions physiologic or pathologic?
• Is “reduced” function physiologic or pathologic?
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Is this normal or abnormal?
• Can this patient play sports (make a living, take a scholarship)?
• Does this patient need a defibrillator?
• Are there genetic/family implications to my decision?
• What is the prognosis?
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CAUSE OF SCA IN YOUNG ATHLETES(N=387, BASED ON AUTOPSY REPORTS
Causes of SCD
• Structural
• Electrical
• Other– Commotio cordis
– Myocarditis, dcm
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Corrado: J Am CollCard 2003
Thanks to Mat Martinez, MD
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Thanks to Mat Martinez, MD
The Changing Face of the American Athlete - Collegiate
Thanks to Mat Martinez, MD
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The Changing Face of the American Athlete - Masters
Atletes Come in All Shapes and Sizes
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Pay attention to age,gender,race, body size and sport specific norms!
Reminder
Non-myopathicconditions affect athletes too
– CAD
– HTN
– BAV etc
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Exercise Physiology Basics
• Exercise requires oxygen
• Increased pulmonary oxygen uptake
• Increased cardiac output
• Increased peripheral oxygen extraction
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Exercise Physiology Basics
• Exercise requires oxygen
• Increased pulmonary oxygen uptake
• Increased cardiac output
• Increased peripheral oxygen extraction
Cardiac Output = HR X Stroke Volume
Stroke volume = End-diastolic volume minus End-systolic
volume*
* In the absence of valve regurgitation or intracardiac shunts
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• Cardiac output may increase 5-6 X with HR responsible for the majority of the change
• Max HR does not increase with exercise training (age-related)
• Stroke volume does increase with exercise training (resting and peak exercise)– SV increases because EDV ± ESV
2 Forms of Exercise Training(some overlap)
• Isotonic– Sustained increase in CO with normal or
reduced SVR
• Isometric– Increased SVR and normal or slightly
increased CO
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Athlete’s Heart
• Well recognized that repetitive physical exercise causes adaptive changes in cardiac structure and function
“Athlete’s Heart”
• Although historically some dispute as to whether changes were harmful, consensus is that this is a favorable adaptive response rather than pre-clinical disease
Athlete’s Heart
• Anatomic changes
• Functional changes
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Left Ventricular Response
• Increased cavity size• Increased wall thickness
– Generally associated with increased cavity size
– More pronounced in those who are large and Afro-Caribbean
• Morganroth hypothesis– Isotonic -> dilatation (eccentric LVH)– Isometric -> increased wall thickness
(concentric LVH)
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Similar Changes with RV
JASE 2017 Volume 30, Issue 9, Pages 845–858
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Wall thickness
Distribution of Maximal Left-Ventricular-Wall Thicknesses in the 947 Elite Athletes.
Pelliccia A et al. N Engl J Med 1991;324:295-301.
1.7% ≥ 1.3 cm
Pelliccia A et al. N Engl J Med 1991;324:295-301
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Gender Matters
Maron Circulation 2006 citing Pelliccia et al Ann Intern Med. 1999;130(1):23-31.
Race Matters
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Effect of specific sports training on LV cavity dimension or wall thickness in elite athletes, representing 27 different sporting disciplines.
Barry J. Maron, and Antonio Pelliccia Circulation. 2006;114:1633-1644
NFL 2011-2013
~ 10% ≥ 1.3 cm.
NFL data Courtesy of Dr Kovacs ACC 2013
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From: Athletic Cardiac Remodeling in US Professional Basketball Players: Engel et al
JAMA Cardiol. 2016;1(1):80-87.
~10% ≥ 1.3 cm.
Impact of Gender and Race
• Less remodeling in women (even with correcting smaller baseline heart sizes)
• More remodeling in blacks – LV wall thickness >12mm in 20% black
men vs 4 % whites
• Black women have thicker walls than white women
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Chamber dimensions
Pelliccia. Ann Intern Med. 1999;130(1):23-31.1309 elite athletes, all with EF >50%
LVEDD
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Abergel. J Am Coll Cardiol. 2004;44149
LVIDd >60m (51%)
Pro Cyclists LV chamber size
LV chamber size in the NBAFrom: Athletic Cardiac Remodeling in US Professional Basketball Players: Engel et alJAMA Cardiol. 2016;1(1):80-87.
All but 5 with normal EF > 50%
36%
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Gherardo Finocchiaro et al. JIMG 2017;10:965-972
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Gherardo Finocchiaro et al. JIMG 2017;10:965-972
Gherardo Finocchiaro et al. JIMG 2017;10:965-972
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Average training impulse (TRIMP) scores per month for all subjects over the training year.
Armin Arbab-Zadeh et al. Circulation. 2014;130:2152-2161
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Changes in left ventricular (LV) mass (left) and right ventricular (RV) mass (right) measured by magnetic resonance imaging every 3 months during the 1-year training program.
Armin Arbab-Zadeh et al. Circulation. 2014;130:2152-2161
Mean±SD changes in left ventricular end-diastolic volume (LVEDV; left) and right ventricular end-diastolic volume (RVEDV; middle) by magnetic resonance imaging measured every 3
months during the training program.
Armin Arbab-Zadeh et al. Circulation. 2014;130:2152-2161
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Systolic Function
LVEF/Systolic function
• Typically normal
• But may be borderline or mildly reduced (50-55%) leading to concern about dilated cardiomyopathy
• Role for stress echocardiography in establishing contractile reserve
• Strain also helpful
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Echocardiographic tissue Doppler imaging (A and C) and speckle-tracking radial strain analysis (B and D) in 2 different athletic patients presenting with left ventricular hypertrophy.
Baggish A L , Wood M J Circulation 2011;123:2723-2735
Atria
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Left atrium
• In Italian series >20% had enlarged left atria (as measured by AP diameter)– No volume data
• Questionable association with supraventricular arrhythmias
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Pelliccia. Ann Intern Med. 1999;130(1):23-31.
LA AP diameter
From Galderisi et al EACVI Recommendations
LA volumes
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Diastolic Function:Myopathy or Athlete’s Heart?
Diastolic Function
• Isotonic training– Enhanced relaxation
• Isometric training– Impaired or unchanged relaxation (less
well studied)
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• In athlete’s heart diastolic function is normal or super-normal
• In HCM, diastolic function is variably abnormal
Diastolic Function in the Athlete
• Increased early diastolic filling– E/A ratio > 1
• normal deceleration time – 100 -200 ms
• normal isovolumetric relaxation time – <100 ms.
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Galderisi et al European Heart Journal – Cardiovascular Imaging (2015) 16, 353
Diastolic Function in HCM• Decreased early diastolic filling
– E/A ratio <0.5
• Lengthened deceleration time
– >280 ms
• Ar-Ad > 30 ms
• Decreased annular e’
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Wall thickness = 1.2 cm
Decel time = 187 ms
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Athlete’s Heart
IVS = 1.4, PW = 1.2
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Hypertrophic CM
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When left atrial pressure is elevated
Journal of the American Society of Echocardiography 2011 24, 473-498DOI:
Diastolic abnormalities may be present prior to hypertrophy
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Individual data points showing septal and lateral Sa and Ea velocities at baseline and follow-up in both groups: the 12 subjects who had inherited the causal mutations for HCM and the 12
individuals in the control group.
Sherif F. Nagueh et al. Circulation. 2003;108:395-398
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Aorta
• Pathologic enlargement typically not encountered (>4 cm)
• Inconsistent data on impact of training on aortic root size
From: Athletic Cardiac Remodeling in US Professional Basketball PlayersEngel et al. JAMA Cardiol. 2016;1(1):80-87. doi:10.1001/jamacardio.2015.0252
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A word about complementary modalities
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EKG
Athlete’s EKG
Increased chamber size
Left ventricular hypertrophyIncomplete RBBB
Left atrial enlargementRight atrial enlargement
VagotoniaSinus bradycardiaSinus arrhythmiaFirst degree AVB
ST-elevationTall T waves
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MRI
• Assessment of LV/RV Mass, Dimensions
• Fibrosis
• Inflammation
• Pathognomonic findings in myopathies
Proposed Approach
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Galderisi EACVI Recommendation
Galderisi EACVI Recommendation
Galderisi EACVI Recommendation
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Sometimes even the experts are not sure
Deconditioning
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Impact of extreme endurance activity
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Figure 1. LV basal and apical circumferential and radial strains and LV longitudinal strains before (•) and after (○) the race.
Stéphane Nottin et al. Circ Cardiovasc Imaging. 2009;2:323-330
Sports CardiologistSports Cardiologist
Sports Medicine TeamATC / Ex Phys
Sports Medicine TeamATC / Ex Phys
EPEP CV ImagingCV ImagingAthleteCardiac Assess-
ment
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Take home messages
• Athlete’s heart may have altered anatomy and, to a lesser degree, function
• Published norms provide guidance but additional interventions (stress, deconditioning) may be essential
• Multimodality approach is essential– Advanced EKG interpretive skills
– MRI
• Meticulous echocardiography– Precise measurements
– Strain
– Stress echocardiography
• Specialized centers important