在头狗中心率变化和血管脉指数
Stéfano L Fernandes1, Laura M C Conti1, Melissa R Souza2
1Universidade Vila Velha, Av. Comissário José Dantas de Melo, 21, Boa Vista II, 29102-920 Vila Velha, ES, Brazil.
Anais da Academia Brasileira de Ciencias
|May 15, 2024
概括
与中脑型狗相比,胸脑型狗没有改变心电图参数或心率变化. 在这项研究中,管度指数在这些组之间也没有显著差异.
科学领域:
- 兽医心脏病学 兽医心脏病学
- 狗的生理学 狗的生理学
- 自主神经系统研究 自主神经系统研究
背景情况:
- 脊头脑型犬种经常表现出脊头脑综合征的迹象.
- 增强的副交感刺激被假设在脑型品种中,可能会影响心率变化 (HRV) 和阴道音调指数 (VTI).
- 之前的研究表明,头犬和其他犬种之间的VTI存在差异.
研究的目的:
- 为了比较心电学参数,并评估使用HRV和VTI在五个头类犬种与中脑类狗的迷走交感平衡.
- 研究品种和形态学对狗的自主功能的影响.
- 为了确定脑形态是否影响心脏自主调节.
主要方法:
- 在60只狗身上进行了电脑心电图记录.
- 狗被分为以下几组:拳击犬,英语斗牛犬,法式斗牛犬,马犬,雪犬和混合品种中脑型狗.
- 统计分析包括沙皮罗-威尔克,克鲁斯卡尔-瓦利斯,恩,ANOVA和邦费罗尼测试 (p<0.05).
主要成果:
- 在所有狗中,在心率和HRV 10RR (r = -0.7678; p < 0.0001),HRV 20RR (r = -0.8548; p < 0.0001) 和VTI (r = -0.2770; p = 0.0321) 之间观察到显著的负相关性.
- 根据狗的品种或形态,在心电图参数或心率变化方面没有发现显著差异.
- 当分别分析脑性品种时,阴道度指数没有差异.
结论:
- 狗的品种和形态似乎不会改变标准心电学参数或心率变化.
- 与之前的一些发现相反,这项研究发现,在脑型品种中,管音量指数没有显著差异.
- 狗的自主神经系统对心率的调节可能不会受到胸头骨形状的显著影响.
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