Abstract
Cardiopulmonary function was studied in 10 full-term healthy foals from birth to 14 days of age. Systemic and pulmonary haemodynamics were recorded in lateral recumbency via indwelling aortic and pulmonary artery catheters. Mean body weight increased from 45.4 +/- 2.4 kg on Day 1 to 70.6 +/- 6.1 kg on Day 14. All foals had a continuous murmur of patent ductus arteriosus for 3-6 days. From Day 1 (12 h old) to Day 14, heart rate increased (89 +/- 4 to 95 +/- 5/min), mean aortic pressure increased (87.7 +/- 1.9 to 100.3 +/- 3.2 mmHg), mean pulmonary artery pressure decreased (38.6 +/- 4.6 to 27.4 +/- 3.0 mmHg), mean right atrial pressure was unchanged (4.5 +/- 0.5 to 4.6 +/- 0.9 mmHg), mean pulmonary artery wedge pressure was unchanged (7.6 +/- 0.9 mmHg to 8.1 +/- 0.7 mmHg), cardiac output increased (8.03 +/- 0.59 to 15.88 +/- 1.90 l/min), cardiac index increased (180.5 +/- 10.3 to 222.1 +/- 21.6 ml/kg/min), stroke volume increased (90.4 +/- 5.7 to 164.2 +/- 25.9 ml), stroke volume index was unchanged (2.04 +/- 0.10 to 2.30 +/- 0.35 ml/kg), pulmonary vascular resistance decreased (314 +/- 39 to 104 +/- 21 aru), systemic vascular resistance decreased (858 +/- 70 to 497 +/- 87 aru), and pulmonary/systemic resistance ratio decreased (38 +/- 6 to 21 +/- 5%). All changes were gradual, although pulmonary artery pressure and pulmonary vascular resistance decreased rapidly in the first 24 h. Catheters were well tolerated over several days, indicating their feasibility for studying cardiovascular function in full-term or premature equine neonates.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 623-628 |
| Number of pages | 6 |
| Journal | Journal of reproduction and fertility. Supplement |
| Volume | 35 |
| State | Published - 1987 |
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ASJC Scopus subject areas
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Systemic and pulmonary haemodynamics in normal neonatal foals. / Thomas, W. P.; Madigan, John E; Backus, K. Q.; Powell, W. E.
In: Journal of reproduction and fertility. Supplement, Vol. 35, 1987, p. 623-628.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Systemic and pulmonary haemodynamics in normal neonatal foals.
AU - Thomas, W. P.
AU - Madigan, John E
AU - Backus, K. Q.
AU - Powell, W. E.
PY - 1987
Y1 - 1987
N2 - Cardiopulmonary function was studied in 10 full-term healthy foals from birth to 14 days of age. Systemic and pulmonary haemodynamics were recorded in lateral recumbency via indwelling aortic and pulmonary artery catheters. Mean body weight increased from 45.4 +/- 2.4 kg on Day 1 to 70.6 +/- 6.1 kg on Day 14. All foals had a continuous murmur of patent ductus arteriosus for 3-6 days. From Day 1 (12 h old) to Day 14, heart rate increased (89 +/- 4 to 95 +/- 5/min), mean aortic pressure increased (87.7 +/- 1.9 to 100.3 +/- 3.2 mmHg), mean pulmonary artery pressure decreased (38.6 +/- 4.6 to 27.4 +/- 3.0 mmHg), mean right atrial pressure was unchanged (4.5 +/- 0.5 to 4.6 +/- 0.9 mmHg), mean pulmonary artery wedge pressure was unchanged (7.6 +/- 0.9 mmHg to 8.1 +/- 0.7 mmHg), cardiac output increased (8.03 +/- 0.59 to 15.88 +/- 1.90 l/min), cardiac index increased (180.5 +/- 10.3 to 222.1 +/- 21.6 ml/kg/min), stroke volume increased (90.4 +/- 5.7 to 164.2 +/- 25.9 ml), stroke volume index was unchanged (2.04 +/- 0.10 to 2.30 +/- 0.35 ml/kg), pulmonary vascular resistance decreased (314 +/- 39 to 104 +/- 21 aru), systemic vascular resistance decreased (858 +/- 70 to 497 +/- 87 aru), and pulmonary/systemic resistance ratio decreased (38 +/- 6 to 21 +/- 5%). All changes were gradual, although pulmonary artery pressure and pulmonary vascular resistance decreased rapidly in the first 24 h. Catheters were well tolerated over several days, indicating their feasibility for studying cardiovascular function in full-term or premature equine neonates.
AB - Cardiopulmonary function was studied in 10 full-term healthy foals from birth to 14 days of age. Systemic and pulmonary haemodynamics were recorded in lateral recumbency via indwelling aortic and pulmonary artery catheters. Mean body weight increased from 45.4 +/- 2.4 kg on Day 1 to 70.6 +/- 6.1 kg on Day 14. All foals had a continuous murmur of patent ductus arteriosus for 3-6 days. From Day 1 (12 h old) to Day 14, heart rate increased (89 +/- 4 to 95 +/- 5/min), mean aortic pressure increased (87.7 +/- 1.9 to 100.3 +/- 3.2 mmHg), mean pulmonary artery pressure decreased (38.6 +/- 4.6 to 27.4 +/- 3.0 mmHg), mean right atrial pressure was unchanged (4.5 +/- 0.5 to 4.6 +/- 0.9 mmHg), mean pulmonary artery wedge pressure was unchanged (7.6 +/- 0.9 mmHg to 8.1 +/- 0.7 mmHg), cardiac output increased (8.03 +/- 0.59 to 15.88 +/- 1.90 l/min), cardiac index increased (180.5 +/- 10.3 to 222.1 +/- 21.6 ml/kg/min), stroke volume increased (90.4 +/- 5.7 to 164.2 +/- 25.9 ml), stroke volume index was unchanged (2.04 +/- 0.10 to 2.30 +/- 0.35 ml/kg), pulmonary vascular resistance decreased (314 +/- 39 to 104 +/- 21 aru), systemic vascular resistance decreased (858 +/- 70 to 497 +/- 87 aru), and pulmonary/systemic resistance ratio decreased (38 +/- 6 to 21 +/- 5%). All changes were gradual, although pulmonary artery pressure and pulmonary vascular resistance decreased rapidly in the first 24 h. Catheters were well tolerated over several days, indicating their feasibility for studying cardiovascular function in full-term or premature equine neonates.
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M3 - Article
C2 - 3479617
AN - SCOPUS:0023506066
VL - 35
SP - 623
EP - 628
JO - Journal of reproduction and fertility. Supplement
JF - Journal of reproduction and fertility. Supplement
SN - 0449-3087
ER -