Patients With Heart Failure in the "Intermediate Range" of Peak Oxygen Uptake

被引:9
作者
Ritt, Luiz Eduardo [1 ,2 ]
Oliveira, Ricardo Brandao [3 ]
Myers, Jonathan [4 ]
Arena, Ross [5 ,6 ]
Peberdy, Mary Ann [7 ]
Bensimhon, Daniel [8 ]
Chase, Paul [8 ]
Forman, Daniel [9 ,10 ]
Guazzi, Marco [11 ]
机构
[1] Hosp Santa Izabel, Salvador, BA, Brazil
[2] Univ Fed Sao Paulo, Sao Paulo, Brazil
[3] Univ Estado Rio De Janeiro, Rio De Janeiro, Brazil
[4] Stanford Univ, VA Palo Alto Hlth Care Syst, Div Cardiol, Palo Alto, CA 94304 USA
[5] Univ New Mexico, Div Cardiol, Dept Internal Med, Albuquerque, NM 87131 USA
[6] Univ New Mexico, Phys Therapy Program, Dept Orthopaed, Albuquerque, NM 87131 USA
[7] Virginia Commonwealth Univ, Dept Internal Med, Richmond, VA 23284 USA
[8] LeBauer Cardiovasc Res Fdn, Greensboro, NC USA
[9] Brigham & Womens Hosp, Div Cardiovasc, Boston, MA 02115 USA
[10] VA Boston Healthcare Syst, Geriatr Res Educ & Clin Ctr, Boston, MA USA
[11] Univ Milan, San Paolo Hosp, Div Cardiol, Milan, Italy
关键词
cardiopulmonary exercise test; heart failure; mortality; RATE RECOVERY; VENTILATORY RESPONSE; AMBULATORY PATIENTS; EXERCISE; TRANSPLANTATION; RECOMMENDATIONS; VALIDATION; EFFICIENCY; PREDICTOR; PROGNOSIS;
D O I
10.1097/HCR.0b013e31824f9ddf
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
PURPOSE: While patients with heart failure who achieve a peak oxygen uptake (peak (V) over dotO(2)) of 10 mL.kg(-1).min(-1) or less are often considered for intensive surveillance or intervention, those achieving 14 mL.kg(-1).min(-1) or more are generally considered to be at lower risk. Among patients in the "intermediate" range of 10.1 to 13.9 mL.kg(-1).min(-1), optimally stratifying risk remains a challenge. METHODS: Patients with heart failure (N = 1167) referred for cardiopulmonary exercise testing were observed for 21 +/- 13 months. Patients were classified into 3 groups of peak (V) over dotO(2) (<= 10, 10.1-13.9, and >= 14 mL.kg(-1).min(-1)). The ability of heart rate recovery at 1 minute (HRR1) and the minute ventilation/carbon dioxide output ((V) over dotE/(V) over dotCO(2)) slope to complement peak (V) over dotO(2) in predicting cardiovascular mortality were determined. RESULTS: Peak (V) over dotO(2), HRR1 (<16 beats per minute), and the (V) over dotE/(V) over dotCO(2) slope (> 34) were independent predictors of mortality (hazard ratio 1.6, 95% CI: 1.2-2.29, P = .006; hazard ratio 1.7, 95% CI: 1.1-2.5, P = .008; and hazard ratio 2.4, 95% CI: 1.6-3.4, P < .001, respectively). Compared with those achieving a peak (V) over dotO(2) >= 14 mL.kg(-1).min(-1), patients within the intermediate range with either an abnormal (V) over dotE/(V) over dotCO(2) slope or HRR1 had a nearly 2-fold higher risk of cardiac mortality. Those with both an abnormal HRR1 and (V) over dotE/(V) over dotCO(2) slope had a higher mortality risk than those with a peak (V) over dotO(2) <= 10 mL.kg(-1).min(-1). Survival was not different between those with a peak (V) over dotO(2) <= 10 mL.kg(-1).min(-1) and those in the intermediate range with either an abnormal HRR1 or (V) over dotE/(V) over dotCO(2) slope. CONCLUSIONS: HRR1 and the (V) over dotE/(V) over dotO(2) slope effectively stratify patients with peak (V) over dotO(2) within the intermediate range into distinct groups at high and low risk.
引用
收藏
页码:141 / 146
页数:6
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