Table 2. Physiological variables and blood gas results from seven brown bears anesthetized during winter and summer 2010 and 2011.

	Units	Winter						Summer
Time from darting		15–35 min			65–75 min			20–30 min			60–65 min
		Mean±SD	Range	N	Mean±SD	Range	N	Mean±SD	Range	N	Mean±SD	Range	N
Heart ratea,b,c,d	beats/minute	32±8	20–50	12	20±6	12–30	10	79±15	42–96	10	67±8	58–80	10
Respiratory rateb	breaths/minute	7±4	3–16	12	5±3	2–12	9	12±8	5–34	4	9±4	5–16	10
Rectal Tempa,b,d	(°C)	33.5±1.2	32.2–36.4	13	33.9±1.6	31.7–37.1	13	39.4±1.1	36.9–40.9	12	38.6±1.3	35.4–40.1	11
Lactatea,c,d	mmol/L	4.1±2.8	1.5–11.2	10	2.8±2.3	1.2–8.5	9	7.5±3.8	1.5–13.2	9	3.0±2.4	0.8–7.5	10
PaO2*a,c,d	mmHg	68±20	30–106	10	205±111	60–387	9	86±17	66–120	9	124±26	89–180	10
SaO2 d	%	89.1±14.8	48.0–98.0	10	97.3±5.8	82.0–100.0	9	91.4±3.7	85.0–95.0	8	97.6±1.4	95.0–99.0	10
pH*d		7.23±0.07	7.12–7.34	10	7.26±0.11	7.15–7.54	9	7.24±0.07	7.17–7.35	8	7.32±0.04	7.29–7.41	10
PaCO2*a,b	mmHg	52.9±9.1	36.9–64.2	10	59.2±14.7	22.1–71.8	9	36.1±7.7	22.2–49.8	8	40.1±4.4	33.2–45.4	10
BUNa	mg/dL	6±4	1–11	11	7±4	3–11	4	23±17	2–44	8	21±15	2–41	10
Glucosea,c,d	mmol/L	8.6±1.1	7.1–10.2	11	11.8±1.5	10.3–13.8	4	6.1±1.4	4.7–9.1	8	6.3±2.1	2.8–9.7	4
Hcta,b,c	%	59±3	54–65	11	55±3	51–57	4	41±5	33–47	8	39±5	28–44	10
HCO3a,b,d	mmol/L	23.6±2.4	18.9–27.2	11	25.9±3.6	19.4–31.0	10	16.4±5.4	8.2–26.7	8	21.3±3.5	17.4–28.3	10

Variables corrected to rectal temperature are marked with an *. Statistically signficant differences using a paired two-tailed t-test are denoted by;

^aBetween winter and summer sample 1,

^bwinter and summer sample 2.

^cwinter sample 1 and 2 and d. summer sample 1 and 2.