Figure 6. The effect on the cardiovascular variables of removal of the NO clamp.

Values are means ±s.e.m calculated every 30 s following the end of the recovery period of the acute hypoxaemia protocol for fetal arterial blood pressure, heart rate, femoral blood flow and femoral vascular conductance before and after withdrawal of sodium nitroprusside infusion in fetuses undergoing treatment with the NO clamp. *Significant differences (P < 0.05) are before vs. after withdrawal of sodium nitroprusside infusion (Student's t test for paired data).