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Cardiopulmonary exercise testing prior to myeloablative allo-SCT: a feasibility study.

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Cardiopulmonary exercise testing (CPET) is safe and feasible before allogeneic stem cell transplant (allo-SCT). CPET measures predict overall survival, pulmonary toxicity, and non-relapse mortality, aiding risk stratification in these patients.

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Area of Science:

  • Hematology
  • Pulmonology
  • Cardiology
  • Exercise Physiology

Background:

  • Allogeneic stem cell transplant (allo-SCT) is a high-risk procedure.
  • Pre-transplant assessment of cardiopulmonary reserve is crucial for patient management.
  • Current risk stratification methods may not fully capture cardiopulmonary risks.

Purpose of the Study:

  • To evaluate the safety and feasibility of symptom-limited cardiopulmonary exercise testing (CPET) before allo-SCT.
  • To determine the prognostic value of CPET-derived measures for outcomes after allo-SCT.

Main Methods:

  • Prospective study of 21 patients with hematologic malignancies undergoing allo-SCT.
  • Symptom-limited CPET performed pre-transplant, assessing peak oxygen consumption (VO2peak) and ventilatory threshold (VT).
  • Adverse events, test completion rates, and CPET metrics were recorded.

Main Results:

  • CPET was safe and feasible, with 95% of patients achieving peak test criteria and no serious adverse events.
  • Patients exhibited significantly reduced VO2peak compared to healthy controls.
  • Lower VO2peak and VT were associated with poorer overall survival (OS), increased pulmonary toxicity, and non-relapse mortality (NRM).

Conclusions:

  • CPET is a safe and feasible pre-transplant evaluation for patients undergoing allo-SCT.
  • Patients undergoing allo-SCT often present with significant cardiopulmonary function impairment.
  • CPET-derived metrics offer valuable prognostic information, potentially enhancing risk stratification beyond conventional assessments.