Table 3. The correlation between plasma NT-proBNP level and heart rate, breathe rate, liver enlargement, and Ejection fraction in the all heart failure patients.

Related factors	r	P	F	R
Heart rate, beats/min	0.754	0.000	77.65	0.573
Breath rate, breathes/min	0.659	0.000	56.86	0.494
Liver enlargement, cm	0.651	0.000	56.36	0.486
Ejection fraction, %	–0.782	0.000	78.87	0.588