Reliability of intra-atrial ECG method of insertion of central venous line through right internal jugular vein when compared to formula and radiological landmark method: a prospective randomized study

Ain-Shams Journal of Anesthesiology

Table 4 ECG Vs formula (post hoc test)

CVC tip position			Group		Total	P
CVC tip position			ECG	Formula	Total	P
	Within 2 cm above junction	Count	23	5	28	0.001
	Within 2 cm above junction	% within group	76.7%	16.7%	46.7%
	Junction-within 1 cm below junction	Count	7	2	9
	Junction-within 1 cm below junction	% within group	23.3%	6.7%	15.0%
	> 1 cm below junction	Count	0	23	23
	> 1 cm below junction	% within group	0.0%	76.7%	38.3%
Total		Count	30	30	60
Total		% within group	100.0%	100.0%	100.0%