Summary
This prospective cohort study of 109 adult cardiac surgery patients evaluated the impact of maintaining higher mean arterial pressure (MAP > 90 mmHg) during cardiopulmonary bypass on kidney function. Whilst higher MAP did not reduce acute kidney injury incidence, it significantly increased intraoperative and postoperative diuresis, decreased renin release, and appeared safe for cerebral perfusion with a trend towards lower postoperative delirium incidence. The findings suggest that MAP > 90 mmHg during bypass confers renal protective benefits by reducing hypoperfusion-related stress responses.
UK applicability
The findings are applicable to UK cardiac surgery practice, as cardiopulmonary bypass techniques are standardised internationally. The study's recommendations on MAP targets during bypass may inform perioperative management protocols in UK cardiac centres, though local clinical guidelines and patient-specific factors would determine adoption.
Key measures
Mean arterial pressure (MAP), cardiopulmonary bypass pump flow (L/min/m²), intraoperative and postoperative diuresis, renin release, incidence of cardiac surgery-associated acute kidney injury (CSA-AKI), cerebrovascular complications, postoperative delirium
Outcomes reported
The study measured intraoperative and postoperative kidney function metrics, diuresis, renin release, and incidence of acute kidney injury (CSA-AKI) and postoperative delirium in patients undergoing cardiopulmonary bypass at different mean arterial pressure targets.
Topic tags
Dig deeper with Pulse AI.
Pulse AI has read the whole catalogue. Ask about this record, its theme, or how the findings apply to UK farming and policy — every answer cites the underlying studies.