Table 3.

Qualitative summary of major changes in the three experimental groups.

Parameter	TLV	TLV+BNP	BNP
Hemodynamic Function
Mean arterial pressure	↑	↔	↓
Systemic vascular resistance	↑	↔	↓
Renal perfusion pressure	↑	↔	↓
Renal function
Urine flow	↑	↑ ↑	↑
Urinary sodium excretion	↔	↑	↑
Electrolyte-free water excretion	↑	↑ ↑	↔
Humoral function
Plasma renin activity	↔	↓	↓
Aldosterone	↑	↔	↑

Changes are within-group changes. Differences between groups were mostly but not always significant (see Table 1 and 2 and Figures for details). ↑, increase, ↓, decrease, ↔, no change, ↑↑, increase greater than ↑.