Table 2 The derived rate of stable intracavitary ECG and occurrence rate of characteristic P wave in the three groups [n (%)].

From: Effects of different concentrations of intraluminal sodium chloride solution on intracavitary ECG used for arm infusion port implantation

Groups

Stable ECG

Characteristic P wave

Group A (n = 213)

200 (93.90%)

189 (88.73%)

Group B (n = 225)

220 (97.78%)*

218 (96.89%)*

Group C (n = 219)

216 (98.63%)*

214(97.72%)*

χ2 values

8.38

19.06

P values

0.02

< 0.001

  1. *Indicates P < 0.05 as compared with group A.
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