Electrical Stimulation-Guided Approach to Pulmonary Artery Catheter Ablation in Patients with Idiopathic Pulmonary Arterial Hypertension: A Pilot Feasibility Study with a 12-Month Follow-Up

Table 2

Hemodynamic measurements before and after PA ablation and description of PA stimulation reactions.

	Patient 1				Patient 2			Patient 3
		Baseline	After ablation	12 months	Baseline	After ablation	12 months	Baseline	After ablation	12 months
Hemodynamics	mPAP, mmHg	30	36	18	48	39	48	28	39	40
	PCWP, mmHg	7	9	2	8	3	8	1	3	8
	PVR, dynes  s  cm^−5	328	344	194	1103	1112	1103	424	291	597
	SVR, dynes  s  cm^−5	1387	1924	964	1328	659	1711	1639	1607	2040
	CI, L/min  m^2	2.99	3.2	3.05	1.96	1.72	1.46	2.66	4.19	2.28
PA stimulation reactions	Bradycardia	4			2			3
	Tachycardia	0			12			3
	Cough	4			0			2
	Phrenic nerve capture	3			4			0
RF ablation	Ablation points, #	13			73			23
	Total ablation time, s	374.75			928.35			663.02

mPAP: mean pulmonary artery pressure; PCWP: pulmonary capillary wedge pressure; PVR: pulmonary vascular resistance; SVR: systemic vascular resistance; CI: cardiac index.