Exercise Diego Medvedofsky 2/2012
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Transcript of Exercise Diego Medvedofsky 2/2012
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Exercise
Diego Medvedofsky 2/2012
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Background• ~50% of pts with symptomatic HF
experience HFpEF
• Morbi-mortality is high and comparable to HF with reduced LVEF (HFrEF)
• In HFpEF no effective therapeutic strategies shown to be effective in large clinical trials
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Background• In HFrEF exercise training (ET) improves
exercise capacity and reduces morbidity (Van Tol, Eur J Heart Fail 2006)
• HF-ACTION also demonstrated a benefit with ET in HFrEF (Piepoli, BMJ 2004, O’Connor, JAMA 2009)
• Conditions associated with HFpEF (endothelial dysfunction, systemic inflammation, metabolic sme) are improved by ET (Adamopoulos, Eur Heart J 2001, Boulé, JAMA 2001, Linke, JACC 2001)
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
ObjectivesTo determine whether structured exercise
training (ET) improves
– Exercise performnce
– LV diastolic FC
– Quality of life (QoL)
in pts with HF with preserved ejection fraction (HFpEF)
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Methods• Prospective, multicenter, blind, RCT in
HFpEF
• NYHA II/III
• LVEF≥50%
• Sinus
• At least 1 of: overweight, DM, HTN, hyperlipidemia, smoking
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Methods: Exclusion criteria
• Significant valvular disorders, pulmonary disease, angina, untreated CAD>50%, S/P MI, anemia, BP>150/100 mmHg, relevant arrhythmia, change in CV cardiovascular medication in previous 4 weeks
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Methods• 64 pts (age 65±7, 56% female) with
HFpEF were prospectively randomized (2:1) to– From 1/2007-8/2007– Supervised endurance/resistance training in
addition to usual care (ET, n=44) – Usual care alone (UC) (n=20)
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Intervention• Supervised, facility based training program
• Endurance and resistance (32 sessions)
• Weeks 1-4: aerobic endurance (cycling)
– Target HR of 50-60% of peak oxygen uptake (peak VO2) baseline
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Intervention• From week 5:
– ↑ training freq and workload
– Added resistance training (bench press, leg press, leg curl, rowing machine, triceps dip, latissimus pull down)
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Methods• Primary endpoint
– Change in peak VO2 after 3 months
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Methods• Secondary endpoints
– Systolic and diastolic function– Effects on cardiac structure [LV mass index
(LVMI) and LA volume index (LAVI)]– QoL [Health Survey (SF-36) and Minnesota
Questionnaire (MLWHFQ)]– Serum biomarkers:
• NT-proBNP• PINP (serum procollagen type I-NP)
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Results• Peak VO2
– The mean benefit of ET was 3.3 ml/min/kg (95% CI: 1.8 to 4.8, p<0.001), NNT 3.5
– Increase in 6 min walk of 24 m (<0.001)
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Results• E/e' and LA volume index
– ↓ with ET, unchanged with UC
• The physical functioning score (36-Item Short-Form Health Survey)
– ↑ with ET, unchanged with UC
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Safety• Brief episodes of palpitations (2)
• Dyspnea (3)
• Mild musculoskeletal discomfort (9)
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Compliance• Training group - exercise sessions
– N=15 (34%) participated in >90%– N=23 (52%) in 70% to 90%– N=6 (14%) in <70%
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Conclusions• 1ST multicenter, prospective RCT• Effects of supervised, structured ET on HFpEF pts– exercise capacity– diastolic function (atrial reverse remodeling and
improved LV diastolic function)– QoL
• Endurance/resistance ET over 3 months was a feasible, safe, and effective intervention
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Limitations• Nature of ET interventions prohibits pure
blinding
• Small number of younger and middle aged pts in short-term follow-up
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Background• Adults with congenital heart disease
(CHD) are at increased risk of mortality and morbidity
• Parameters of cardiopulmonary exercise testing (CPX) identified as strong predictors of mortality in adults with CHD
– guide clinicians in assessing prognosis and planning interventions
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Investigation• Relation between CPX parameters
and their combination• may provide optimal prognostic info
on midterm survival in this population
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Methods• 1375 pts w/adult (>14y) CHD (33±13 y)
– Retrospectively– CPX – Single center, 10 years (1999-2008)– All cause mortality
• Measured:– Peak oxygen consumption (peak VO2)– Ventilation/CO2 (VE/VCO2 slope)– HR reserve (peak - resting HR)
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Cardiopulmonary Exercise Testing
• On a treadmill - modified Bruce protocol
• All patients were encouraged to exercise to exhaustion
• Respiratory mass spectrometer: ventilation, VO2, VCO2
• ECG: HR
• Manually sphygmomanometry: BP
• Pulse oximetry: O2 saturation
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Simple:ASDVSDPDA
AO coartat
SO2<90%
I 51%II 39%
16%
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
BB, CCB ,AMIODAR
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Results• Follow-up of 5.8 years
– 117 patients died:• HF 41• SCD 34• Perioperative 12• Inf 5• PE 1• Hemoptysis 1• Brain hemorrhage 1• Out of Hospital 21
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Results
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Results• Risk of death ↑ with:
– ↓ peak VO2– ↓ HR reserve– ↑ VE/VCO2 slope in noncyanotic pts
• Not predictive in cyanotic pts– Combination of peak VO2+HR reserve
• greatest predictive info• ↓ in pts with peak respiratory exchange
ratio <1.0
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Sheba Medical CenterTel Hashomer The Leviev Heart Center)Neg chronotropic agents(
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Conclusions• Peak VO2 and HR reserve data can be
used to generate estimates of 5-year survival across a wide spectrum of adults with CHD
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Conclusions• CPX: strong prognostic info in adult pts
w/CHD
– Data useful for comparing the exercise capacity of a particular patient vs pts in the same diagnostic group
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
Limitations• Retrospective
• Part of routine evaluation
• Tertiary center
• Ed: patients terminated exercise before reaching their cardiovascular limit
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Sheba Medical CenterTel Hashomer The Leviev Heart Center
THANKS
THANKS