Table 1.

Body temperature and arterial blood gases, pH and K⁺ measured at baseline and 5 min after finishing the drug infusions in the first, second and third cycles

	Temperature (°C)	PO2 (mm Hg)	PCO2 (mm Hg)	pH (units)	K+ (mM)
Vehicle (n=6)
Baseline	38.5±0.2	91±2	38±2	7.42±0.02	2.24±0.11
First cycle	38.6±0.1	91±2	37±1	7.42±0.01	2.34±0.17
Second cycle	38.6±0.1	94±2	36±1	7.42±0.01	2.34±0.11
Third cycle	38.7±0.2	100±5	35±2	7.40±0.01	2.59±0.12
Phenylephrine (n=7)
Baseline	39.1±0.3	98±4	34±3	7.41±0.01	2.17±0.27
First cycle	38.9±0.3	97±6	33±3	7.35±0.02	2.61±0.36
Second cycle	38.8±0.3	98±5	33±2	7.34±0.02	2.34±0.25
Third cycle	38.7±0.2	103±6	31±3	7.29±0.03a	2.47±0.28
Phenylephrine+Vagotomy (n=6)
Baseline	38.9±0.4	99±3	39±1	7.42±0.01	2.35±0.07
First cycle	38.8±0.2	101±3	41±2	7.36±0.02	2.87±0.09
Second cycle	38.4±0.2	104±2	39±1	7.31±0.02a	3.05±0.18a
Third cycle	38.0±0.1	107±5	35±2	7.30±0.02a	3.24±0.30a
Angiotensin II (n=6)
Baseline	38.6±0.3	88±6	37±1	7.43±0.02	2.31±0.09
First cycle	38.6±0.1	88±4	35±1	7.45±0.01	2.42±0.17
Second cycle	38.9±0.1	93±5	35±1	7.42±0.02	2.44±0.16
Third cycle	38.6±0.2	96±3	34±1	7.40±0.02	2.31±0.15

^aP<0.05 compared with baseline, one-way ANOVA.

Values are mean±s.e.mean.