Final answer:
In a patient with an arterial line, a diastolic pressure below 60 mm Hg indicates inadequate CPR quality.
Step-by-step explanation:
In a patient with an arterial line, a diastolic pressure below 60 mm Hg indicates inadequate CPR quality.
Diastolic pressure is the lower value recorded when measuring arterial blood pressure and represents the minimal value corresponding to the pressure that remains during ventricular relaxation.
If the diastolic pressure falls below 60 mm Hg for an extended time, blood pressure will not be high enough to ensure circulation to and through the tissues, resulting in inadequate blood flow and oxygenation of the tissues.