The Role of Conjunctival Microvasculation Combined with Echocardiography in Evaluating Pulmonary Arterial Hypertension in Systemic Lupus Erythematosus

Table 2

Correlation between VD and MFI of conjunctival microvasculation and SLE-PAH-related parameters.

			sPAP	NT-proBNP	6MWD	SUA	RDW	RAP	TAPSE
Spearman’s rho	VD	Correlation coefficient	-0.441	-0.528	0.574	-0.560	-0.323	-0.637	0.539
		Sig. (2-tailed)	0.076	0.029	0.016	0.019	0.306	0.006	0.026
	MFI	Correlation coefficient	-0.537	-0.546	0.504	-0.350	-0.305	-0.689	0.683
		Sig. (2-tailed)	0.026	0.023	0.039	0.168	0.335	0.002	0.003

VD: vessel density; MFI: microvascular flow index; sPAP: systolic pulmonary artery pressure; NT-proBNP: N-terminal prohormone of brain natriuretic peptide; 6MWD: 6-minute walking distance; SUA: serum uric acid; RDW: red blood cell volume distribution width; RAP: right atrial pressure; TAPSE: tricuspid annular plane systolic excursion. , .