Biomedical subjects

S S Azuma

Publications and source records attributed to S S Azuma.

3 recordsLinked to original sources

PubMed1994

Persistent postoperative ventricular tachycardia treatment by using external cardiopulmonary support.

Drug-resistant incessant ventricular tachycardia (DRIVT) after cardiac surgery is a rare but almost always fatal event. Antiarrhythmic therapy seems to be ineffective and electrical cardioversion is of limited value when these patients present themselves with recurrent, sustained ventricular tachycardia. A patient with DRIVT in whom external cardiopulmonary support finally succeeded in bringing about resuscitation will be described in this article. The use of external cardiopulmonary support (CPS) should be considered in patients with this kind of malignant arrhythmia.

Aged↗

PubMed1988

Pulsed Doppler evaluation of regurgitation in mitral valve prostheses.

Prosthetic mitral valve regurgitation was evaluated by both pulsed Doppler ultrasound and left ventriculography. Pulsed Doppler ultrasound was found to have only a 20% sensitivity in detecting prosthetic mitral valve regurgitation documented by left ventriculography. Possible reasons for this poor sensitivity include 1) an eccentric jet not identified by the small pulsed Doppler sample volume; 2) prosthesis interference with the Doppler signal in the apical four chamber view; and 3) the large angle of incidence between the pulsed Doppler signal and the regurgitant jet. Mitral insufficiency, especially when not severe, may be missed by this technique. Care must be taken in interpreting negative results from a pulsed Doppler ultrasound evaluation of a prosthetic mitral valve.

Echocardiography↗

PubMed1986

Chest compression-induced vertebral fractures.

Two cases with chest compression-induced thoracolumbar transvertebral fractures are discussed. This is a previously unreported complication of cardiopulmonary resuscitation. Dorsal kyphosis and osteopenia were present in both of these cases. There was no spinal cord injury documented, though the potential for injury and paraplegia exists. Care should be taken to avoid this complication, especially in the elderly with kyphosis; however, adequate compressions to insure support of circulation should be maintained.

Aged↗