Association between initial prescribed minute ventilation and post-resuscitation partial pressure of arterial carbon dioxide in patients with post-cardiac arrest syndrome

Annals of Intensive Care

Table 2 Post-cardiac arrest data for all subjects (displayed as median (IQR) unless otherwise noted)

	All subjects	Hypocapnia	Normocapnia	Hypercapnia
	n = 75	n = 11	n = 47	n = 17
Initial prescribed ventilation Settings
FiO₂^‡ (%)	100 (80 to 100)	100 (70 to 100)	100 (68 to 100)	100 (100 to 100)
PEEP (cmH₂O)	5 (5 to 5)	5 (5 to 5)	5 (5 to 5)	5 (5 to 5)
Tidal Volume (mL/kg)	7 (7 to 8)	8 (7 to 8)	7 (7 to 8)	7 (6 to 7)
Respiratory rate (breaths/minute)	14 (14 to 16)	14 (14 to 21)	14 (14 to 16)	14 (12 to 14)
Post-resuscitation shock^a (n (%))	69 (92)	11 (100)	41 (87)	17 (100)
Metabolic acidosis^b (n (%))	49 (65)	9 (82)	27 (57)	13 (76)
pH	7.24	7.27	7.29	7.04
pH	(7.07 to 7.33)	(7.05 to 7.34)	(7.15 to 7.37)	(6.98 to 7.13)
Bicarbonate (mmol/L)	18 (13 to 23)	12 (7 to 18)	19 (14 to 23)	18 (14 to 23)

^aDefined as systolic blood pressure < 100 mmHg or vasopressor support required to maintain systolic blood pressure > 100 mmHg during the first 24 hours after return of spontaneous circulation; ^bDefined as a base deficit ≤ - 6 mmol/L during the first 24 hours after return of spontaneous circulation; ^‡FiO₂, fraction of inspired oxygen; PEEP, peak end expiratory pressure.