Effects of Several Vasoactive Substances on Arterio-Venous and Venous Per-Fusion Preparations in Dog Forelimb

Possible embryogenetical differences of the dog venous system in sensitivity to vasoactive substances.

Using isolated dog veins, we examined whether correlations exist between the regional differences in sensitivity to drugs and their embryogenesis. Twelve different veins were dissected. In the analysis, the data obtained previously for the inferior vena cava were also included. Spiral strips were prepared and the contractile responses to cumulative application of norepinephrine (NE), 5-hydroxyt...

Pulmonary arterio-venous fistula.

As would be expected, the lesion is recognized in young to early middle life. The patient tends to be frail rather than robust, though there are exceptions to this, and there is no physical retardation. Clubbing of the fingers is frequently present, and telangiectases or hemangiomata may be present in the skin or mucous membranes. The most common presenting symptoms are cyanosis, which sometime...

Pulmonary Arterio-Venous Malformation

J Cardiovasc Thorac Res / 37 Case Report Pulmonary Arterio-Venous Malformation Shahryar Hashemzadeh MD, Amir Daryani MD 1. Dept. of Thoracic Surgery, Tuberculosis and Lung Disease Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. 2. Dept. of General Surgery Imam Reza Hospital, Tabriz University of Medical Sciences, Tabriz, Iran. (Received 27 May 2009;Accepted 30 Jul, 2009) P...

Arterio-Venous Aneurysms

Coronary Arterio-venous Fistulae.

The discovery of a continuous murmur at an unusual site over the praecordium presents an interesting diagnostic problem. Abnormalities of the coronary circulation are among the possible causes for such a finding, but they are rare. In this report we describe three patients with coronary arterio-venous fistulae and draw attention to the ease and elegance of the diagnosis of this condition by ret...