Comparison among manual, computer-assisted, and closed-loop control of blood pressure after cardiac surgery.

摘要: Forty-five patients who required vasodilator therapy for systemic arterial hypertension following cardiac surgery were randomly allocated to receive: (1) manual control of a sodium nitroprusside (SNP) infusion; (2) computer-assisted where the nurse was provided with color graphical display performance; or (3) automatic closed-loop control. Limits acceptable systolic pressure prescribed each patient, and percentage time spent outside these limits calculated patient. The computer system (CLCS) produced significantly better than either systems (P < 0.001), ±10 mmHg (manual P 0.001; assisted 0.01). While CLCS proved more satisfactory ±20 ±30 (±20 0.01), there no significant difference in quality between limits. results suggest that blood achieved by nurses can be improved providing them clear their performance. Better should reduce adverse effects hypotension surgery.