Resting haemodynamic variables for untreated and atropinised turtles
| Treatment . | fh (beats min-1) . | Vstot (ml kg-1) . | Q̇pul (ml kg-1min-1) . | Q̇sys (ml kg-1min-1) . | Rsys (kPa ml-1 min-1kg-1) . | Psys (kPa) . | Q̇shunt (ml kg-1min-1) . | Q̇pul/Q̇sys . |
|---|---|---|---|---|---|---|---|---|
| Day 1 | 20.7±2.1 | 2.7±0.2 | 29.6±3.8 | 27.7±3.2 | 0.13±0.01 | 3.76±0.34 | 1.68±3.11 | 1.10±0.12 |
| Day 2 untreated | 20.7±2.6 | 3.1±0.1 | 31.9±7.49 | 31.1±4.7 | 0.13±0.02 | 3.89±0.40 | -0.23±10.4 | 1.14±0.33 |
| Day 2 atropinised | 34.6±1.4* | 3.9±0.7 | 88.6±19.3* | 38.1±5.1* | 0.11±0.02 | 3.99±0.37 | 48.8±21.8* | 2.49±0.58* |
| Treatment . | fh (beats min-1) . | Vstot (ml kg-1) . | Q̇pul (ml kg-1min-1) . | Q̇sys (ml kg-1min-1) . | Rsys (kPa ml-1 min-1kg-1) . | Psys (kPa) . | Q̇shunt (ml kg-1min-1) . | Q̇pul/Q̇sys . |
|---|---|---|---|---|---|---|---|---|
| Day 1 | 20.7±2.1 | 2.7±0.2 | 29.6±3.8 | 27.7±3.2 | 0.13±0.01 | 3.76±0.34 | 1.68±3.11 | 1.10±0.12 |
| Day 2 untreated | 20.7±2.6 | 3.1±0.1 | 31.9±7.49 | 31.1±4.7 | 0.13±0.02 | 3.89±0.40 | -0.23±10.4 | 1.14±0.33 |
| Day 2 atropinised | 34.6±1.4* | 3.9±0.7 | 88.6±19.3* | 38.1±5.1* | 0.11±0.02 | 3.99±0.37 | 48.8±21.8* | 2.49±0.58* |
Resting undisturbed turtles had a body temperature of 22°C. Values are given for turtles before heating in untreated animals on the first day, and before and after atropine infusion (5 mg kg-1) on the second day.
Values are means ± s.e.m.(N=6 for all variables except fh and Q̇sys, where N=7).
fh, heart rate; Vstot,total stroke volume; Q̇pul,pulmonary blood flow; Q̇sys,systemic blood flow; Rsys, systemic resistance; Psys, mean s systemic blood flow; Q̇shunt, net shunt flow; Q̇pul/Q̇sys,ratio of pulmonary and systemic blood flow.
Significant difference from untreated animals; ‡significant difference between untreated and pre-atropinised animals (P<0.05).