A critical assessment of monitoring practices, patient deterioration, and alarm fatigue on inpatient wards: a review

Table 1 Simulated SPO ₂ values associated with FIO ₂ and PaCO ₂ /arterial pH

FIO₂	PaCO₂55 mmHg (pH 7.26)	Oximeter 90% alarm breach	SPO₂drift	PaCO₂70 mmHg (CO₂Narcosis)	Oximeter 90% alarm breach	SPO₂drift
30 yo Patient Model
.21	SPO₂ 91%	-	+		+	+
.24	SPO₂ 95%	-	-	SPO₂ 89%	+	+
.27		-	-	SPO₂ 93%	-	+
.30	SPO₂ 98%	-	-	SPO₂ 95%	-	-
50 yo Patient Model
.21	SPO₂ 89%	+	+		+	+
.24	SPO₂ 94%	-	+	SPO₂ 87%	+	+
.27		-	-	SPO₂ 93%	-	+
.30		-	-	SPO₂ 95%	-	-
75 yo Patient Model
.21	SPO₂ 87%	+	+		+	+
.24	SPO₂ 93%	-	+	SPO₂ 84%	+	+
.27	SPO₂ 96%	-	-	SPO₂ 91%	-	+
.30		-	-	SPO₂ 95%	-	-

ISSN: 1754-9493