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Biomedical subjects

M Haco

Publications and source records attributed to M Haco.

At least 19 recordsLinked to original sources
PubMed1985

Contrast Doppler echocardiography.

First clinical experiences with contrast Doppler echocardiography -- a new technique of cardiac ultrasound examination are described. The presence of contrast material within the right heart cavities following the peripheral vein injection is easily recognized by characteristic Doppler signal changes. This knowledge was used to detect a small amount of contrast passing through atrial (ASD) or ventricular septal defect (VSD) towards the left heart cavities despite the dominant left-to-right shunting. The high sensitivity of this technique in those conditions was attested to by correct diagnosis of 10 ASD and 3 VSD. Besides that, this technique is indicated also in selected cases of tricuspid regurgitation. The combination of both pulsed Doppler and contrast echo-investigation seems to be advantageous in the diagnosis of the mentioned diseases. However, further study of this very specialized method is required.

Echocardiography↗
PubMed1984

New occlusive agent for therapeutic embolization tested in dogs.

A new occlusive agent, Vilan 500, was used to embolize the arterial bed of the kidney in 12 dogs. This polyvinyl acetate, alcohol-soluble agent becomes gelantinous on contact with an aqueous environment and its low viscosity makes this material well suited for application through small-caliber catheters. Complete arterial occlusion of the embolized kidneys was observed in all animals. On histologic examination of tissue 4-6 weeks after the procedure, changes were seen such as shrinkage through fibrosis, diffuse necrosis and atrophic parenchyma. No signs of recanalization of the embolized artery or functional collateral circulation were noted in any dog.

Animals↗