Table 2.

Univariate Correlations between Spot Urinary Electrolytes and Clinical Markers of Diuresis in Acute Decompensated Heart Failure Patients receiving Continuous (n=52) Intravenous Furosemide

	24-hour urine output		24-hour net fluid output		24-hour weight loss
	r	p	r	p	r	P
UNa (mM)	0.52	<0.001	0.52	<0.001	0.56	<0.001
UFurosemide (mg/L)	−0.56	<0.001	−0.57	<0.001	−0.49	0.004
UNa:UFurosemide (mmol/mg)	0.57	<0.001	0.63	<0.0001	0.55	<0.001
FENa (%)	0.62	<0.0001	0.64	<0.0001	0.44	0.008

Abbreviations: U_Na, urine sodium; U_Furosemide, urine furosemide; U_Cr, urine creatinine; FE_Na, fractional excretion of sodium.