Use of ultrasound-measured internal jugular vein collapsibility index to determine static intracardiac pressures in patients with presumed pulmonary hypertension

Annals of Intensive Care

Table 4 Spearman correlation coefficients between ultrasound measurements and markers of volume status

Ultrasound measurements	MRAP	PAOP	BNP
IJ diameter at rest	r 0.26	r 0.14	r 0.15
IJ diameter at rest	p value 0.029	p value 0.238	p value 0.224
Respiratory CI	r − 0.14	r − 0.12	r − 0.12
Respiratory CI	p value 0.233	p value 0.307	p value 0.351
Compression CI	r − 0.43	r − 0.35	r − 0.31
Compression CI	p value 0.0002	p value 0.0027	p value 0.015

CI compression index, mRAP mean right atrial pressure, PAOP pulmonary artery occlusion pressure, BNP B-type natriuretic peptide