Right ventricular (RV) afterload is traditionally characterized using pulmonary vascular resistance (PVR), which reflects steady-state resistance but fails to capture pulsatile components such as arterial compliance and wave reflection. Effective arterial elastance (Ea) summarizes total afterload but cannot distinguish resistive, elastic, and reflective contributions. This study developed an automated method for RV pressure waveform analysis to quantify pulsatile components of RV afterload using a swine model of progressive pulmonary embolism. Hemodynamic data were obtained from three anesthetized swine instrumented for biventricular and pulmonary artery pressure and cardiac output monitoring. Incremental embolization was performed until RV systolic pressure increased approximately threefold. Automated event detection based on the second derivative of RV pressure identified key points during ejection, allowing partitioning of the RV pressure waveform into total ejection area (TEA), flow area (FA), and wave reflection area (WRA). Pulmonary vascular compliance was estimated as FA/TEA, and relative wave reflection as WRA/FA, with results referenced to Ea and PVR. Increasing clot burden produced a rise in WRA and a reduction in FA, leading to increased WRA/FA. Ea demonstrated strong nonlinear correlations with PVR, FA/TEA, and WRA/FA. Early increases in afterload were driven primarily by changes in compliance and wave reflection, while steady-state resistance predominated at higher afterload levels. These findings demonstrate that automated RV pressure waveform analysis can quantify pulsatile afterload components and, when combined with PVR, provide a more complete assessment of RV loading conditions.