DiNardo JA

Language: English
References: 7
Page: 275-277
PDF size: 99.57 Kb.

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Single ventricle physiology

This term is used to describe the situation wherein complete mixing of pulmonary venous and systemic venous blood occurs at the atrial or ventricular level and the ventricle(s) then distribute output to both the systemic and pulmonary beds. As a result of this physiology the:

• Ventricular output is the sum of pulmonary blood flow (Qp) and systemic blood flow (Qs)
• Distribution of systemic and pulmonary blood flow is dependent on the relative resistances to flow (both intra and extra-cardiac) into the two parallel circuits
• Oxygen saturations are the same in the aorta and the pulmonary artery

REFERENCES

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3. Mace L, Dervanian P, Bourriez A, Mazmanian GM, Lambert V, Losay J, Neveux JY. Changes in venous return parameters associated with univentricular Fontan circulations. Am J Physiol Heart Circ Physiol 2000;279:H2335-43.

4. Senzaki H, Masutani S, Kobayashi J, Kobayashi T, Sasaki N, Asano H, Kyo S, Yokote Y, Ishizawa A. Ventricular afterload and ventricular work in fontan circulation: comparison with normal two-ventricle circulation and single-ventricle circulation with blalock-taussig shunts. Circulation 2002;105:2885-92.

5. Tanoue Y, Sese A, Imoto Y, Joh K. Ventricular mechanics in the bidirectional glenn procedure and total cavopulmonary connection. Ann Thorac Surg 2003;76:562-6.

6. Senzaki H, Masutani S, Ishido H, Taketazu M, Kobayashi T, Sasaki N, Asano H, Katogi T, Kyo S, Yokote Y. Cardiac rest and reserve function in patients with Fontan circulation. J Am Coll Cardiol 2006;47:2528-35.

7. Davos CH, Francis DP, Leenarts MF, Yap SC, Li W, Davlouros PA, Wensel R, Coats AJ, Piepoli M, Sreeram N, Gatzoulis MA. Global impairment of cardiac autonomic nervous activity late after the Fontan operation. Circulation 2003;108:II180-5.