Science and Research

Doppler-derived pulmonary pulse transit time measurements in chronic obstructive pulmonary disease: Reproducibility and cardiopulmonary function

INTRODUCTION: Doppler-derived pulmonary pulse transit time (pPTT) is an auspicious hemodynamic marker in chronic pulmonary diseases. The aim is to compare four distinct pPTT measurements and its relation to right cardiac and pulmonary function. METHODS: Prospectively, 25 chronic obstructive pulmonary disease (COPD) patients (four patients excluded) and 32 healthy subjects underwent repeated distinct pPTT measurements, standard echocardiography, and pulmonary function testing on the same day. pPTT was defined as the interval from the R or Q-wave in the electrocardiogram to the corresponding pulse wave Doppler peak late systolic (S) 2 or diastolic (D) pulmonary vein flow velocity (pPTT R-S, Q-S, R-D, Q-D). Reproducibility was assessed using Bland-Altman analysis, coefficient of variation (COV), intraclass correlation coefficient (ICC), and power calculations. Associations with right ventricular RV tissue and pulse wave Doppler velocities (RV E', RV S', RV A', RV E, RV A, RV E/E', RV E/A), TAPSE, right ventricular fractional area change, left ventricular systolic and diastolic function (LV ejection fraction, E, A, E/A, E/E', septal E', lateral E'), LA diameters, as well as forced expiratory volume in 1 s, forced vital capacity (FVC) predicted (%), and in liters were analyzed. RESULTS: There was no significant difference and no bias between pPTT measures (p range: .1-.9). COV was in COPD 1.2%-2.3%, in healthy subjects 1.0%-3.1%. ICC ranged from .92 (COPD) to .96 (healthy subjects). In COPD significant correlations were found for pPTT R-S(,) Q-S and R-D with RV E`, (all > 

  • Löffler, F.
  • Westhoff-Bleck, M.
  • Welte, T.
  • Park, D. H.
  • Olsson, K. M.
  • Behrendt, L.
  • Klime
  • Bauersachs, J.
  • Wacker, F.
  • P

Keywords

  • Humans
  • *Pulmonary Disease, Chronic Obstructive/physiopathology/diagnostic imaging
  • Male
  • Female
  • Reproducibility of Results
  • *Pulse Wave Analysis/methods
  • Prospective Studies
  • *Echocardiography, Doppler/methods
  • Aged
  • Middle Aged
  • Respiratory Function Tests/methods
  • Blood Flow Velocity/physiology
  • Copd
  • diastolic right heart function
  • echocardiography
Publication details
DOI: 10.1111/echo.15821
Journal: Echocardiography
Pages: e15821 
Number: 5
Work Type: Original
Location: BREATH
Disease Area: COPD
Partner / Member: MHH
Access-Number: 38706373

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