Table 1.

Data at the end of the study seven weeks after PTB or sham surgery.

	Sham (n = 11)	PTB (n = 11)	PTB + pirf (n = 10)
Anatomical data
RV weight (g)	0.22 ± 0.02	0.49 ± 0.07*	0.47 ± 0.4
LV + S weight (g)	0.86 ± 0.07	0.87 ± 0.10	0.74 ± 0.09†
RV/LV + S	0.26 ± 0.02	0.57 ± 0.09*	0.63 ± 0.04
RV/tibia length (mg/mm)	5.4 ± 0.4	12.0 ± 1.6	12.5 ± 2.8
LV + S/tibia length (mg/mm)	21.0 ± 1.2	21.3 ± 2.3	18.6 ± 2.0†
Hemodynamic measures
Heart rate (bpm)	329 ± 19	279 ± 30*	276 ± 25
RV stroke volume (mL)	0.40 ± 0.05	0.23 ± 0.03*	0.20 ± 0.03
RV EF (%)	74 ± 4	51 ± 5*	47 ± 8
RV EDP (mmHg)	4.2 ± 3.1	8.9 ± 5.9	8.3 ± 4.6
RV filling pressure (mmHg)	1.6 ± 0.4	5.3 ± 1.8*	3.5 ± 1.0†
RV dP/dt max (mmHg/s)	1231 ± 261	4042 ± 816*	3408 ± 579
RV dP/dt min (mmHg/s)	−1117 ± 314	−3087 ± 452*	−2709 ± 585
Ea (mmHg/mL)	70 ± 19	458 ± 85*	463 ± 99
Ees (mmHg/mL)	108 ± 35	277 ± 95*	253 ± 77
Ees/Ea	1.56 ± 0.55	0.47 ± 0.17*	0.53 ± 0.15
Eed (mmHg/mL)	2.7 ± 1.2	19.2 ± 13.0§	15.8 ± 12.1
RV PRSW (mmHg)	22 ± 9	50 ± 22§	39 ± 13
TAPSE (mm)	2.5 ± 0.1	1.6 ± 0.3*	1.7 ± 0.2
LV EDV (mL)	0.64 ± 0.06	0.42 ± 0.05*	0.40 ± 0.06
LV ESV (mL)	0.16 ± 0.03	0.13 ± 0.04	0.13 ± 0.03
LV EF (%)	75 ± 5	68 ± 6‡	66 ± 6
MAP (mmHg)	109 ± 11	113 ± 8	117 ± 12

Data are presented as mean ± SD or n.

^*P < 0.001 vs. sham.

^†P < 0.01 vs. PTB.

^‡P < 0.05 vs. sham.

^§P < 0.01 vs. sham.

RV, right ventricle; LV + S, left ventricle plus septum; LV, left ventricle; EDP, end-diastolic pressure; RV dP/dt, first derivative of right ventricular systolic pressure; Ea, arterial elastance; Ees, end-systolic elastance; Eed, end-diastolic elastance; PRSW, preload recruitable stroke work; TAPSE, tricuspid annular plane systolic excursion; EDV, end-diastolic volume; ESV, end-systolic volume; EF, ejection fraction; MAP, mean arterial pressure.