Yasuoka Melina Marie, Monteiro Bruno Moura, Fantinato-Neto Paulo, Paiano Renan Braga, Fantoni Denise Tabacchi, Otsuki Denise Aya, Birgel Junior Eduardo Harry
Department of Veterinary Medicine, College of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635900, Brazil.
Department of Animal Reproduction, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo 05508270, Brazil.
Animals (Basel). 2020 Dec 3;10(12):2277. doi: 10.3390/ani10122277.
The neonatal period is a challenging phase for calves, and during this phase constant adaptations are required. The aim of the present study was to evaluate the invasive hemodynamics with the Swan-Ganz catheter in neonate calves to understand adaptive changes during the first 30 days of life. A prospective and observational study was conducted with 10 Holstein calves. Assessments of the right atrial pressure (RAP), right ventricular pressure (RVP), pulmonary artery pressure (PAP), pulmonary capillary pressure (PW), cardiac output (CO), heart rate (HR), pulmonary vascular resistance (PVR), and blood gas levels were performed. The analyses of PAP, PVR, PW, HR, sO, and arterial blood gases differed ( < 0.05) between the evaluated periods. Our results indicated transient pulmonary artery hypertension during the process of extrauterine adaptation during the first 30 days of life. This hypertension must be considered as physiological and consequent to the neonatal adaptation process.
新生期对犊牛来说是一个具有挑战性的阶段，在此阶段需要不断进行适应性调整。本研究的目的是使用 Swan-Ganz 导管评估新生犊牛的有创血流动力学，以了解生命最初 30 天内的适应性变化。对 10 头荷斯坦犊牛进行了一项前瞻性观察研究。对右心房压力（RAP）、右心室压力（RVP）、肺动脉压力（PAP）、肺毛细血管压力（PW）、心输出量（CO）、心率（HR）、肺血管阻力（PVR）和血气水平进行了评估。在评估期间，PAP、PVR、PW、HR、sO 和动脉血气分析存在差异（<0.05）。我们的结果表明，在生命的前 30 天宫外适应过程中存在短暂的肺动脉高压。这种高血压必须被视为生理性的，是新生儿适应过程的结果。
