What are the normal arterial blood pressures in adult anesthetized dogs and cats?

What are the normal arterial blood pressures in adult anesthetized dogs and cats?

• A. SAP: >110 mmHg; MAP: >70 mmHg; DAP: >45 mmHg
• B. SAP: >80 mmHg; MAP: >50 mmHg; DAP: >30 mmHg
• C. SAP: >100 mmHg; MAP: >70 mmHg; DAP: >50 mmHg
• D. SAP: >90 mmHg; MAP: >60 mmHg; DAP: >40 mmHg

Answer: (D)

Maintaining adequate perfusion during anesthesia hinges on keeping arterial pressures above safe, low-end targets. For adult dogs and cats under anesthesia, the standard lower limits are systolic pressure above 90 mmHg, mean arterial pressure above 60 mmHg, and diastolic pressure above 40 mmHg. These thresholds provide enough peak pressure to push blood through tissues, steady perfusion during the cardiac cycle, and sufficient diastolic flow to vital organs like the brain and heart. This set best fits the commonly accepted targets because it gives a practical, minimal safeguard for organ perfusion without advocating unnecessarily high pressures. Other options propose higher minimums, which aren’t the baseline targets for healthy anesthetized patients, or lower diastolic targets that could risk inadequate diastolic flow.

Maintaining adequate perfusion during anesthesia hinges on keeping arterial pressures above safe, low-end targets. For adult dogs and cats under anesthesia, the standard lower limits are systolic pressure above 90 mmHg, mean arterial pressure above 60 mmHg, and diastolic pressure above 40 mmHg. These thresholds provide enough peak pressure to push blood through tissues, steady perfusion during the cardiac cycle, and sufficient diastolic flow to vital organs like the brain and heart.

This set best fits the commonly accepted targets because it gives a practical, minimal safeguard for organ perfusion without advocating unnecessarily high pressures. Other options propose higher minimums, which aren’t the baseline targets for healthy anesthetized patients, or lower diastolic targets that could risk inadequate diastolic flow.