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Biomedical subjects

J Ender

Publications and source records attributed to J Ender.

7 recordsLinked to original sources
PubMed2002

Epicardial echocardiography for correct placement of the intracardial biventricular assist device (Impella).

BACKGROUND: Correct placement of the intracardial biventricular assist device (Impella) as a supporting system for off-pump coronary surgery is routinely checked by transesophageal echocardiography and invasive pressure measurements. However, it remains difficult to verify the accurate position of the right heart system when the posterior wall is exposed. METHODS: In 23 patients undergoing augmented beating heart CABG surgery, the correct placement of the lmpella-system was controlled by TEE as well as by a new 15-6 L epicardial echotransducer (EE) (Agilent, Andover, MA). RESULTS: TEE assisted well in inserting the system in all patients. The correct placement of the distal end of the right heart system 1.5 cm behind the pulmonary valve was verified in 18/23 cases by TEE vs. 23/23 cases by EE. Dislocation of the devices during tilting of the heart could only be verified by EE. CONCLUSIONS: Epicardial echocardiography is a useful, innovative method for monitoring the correct placement of the new intracardial biventricular assist device during beating-heart surgery.

Coronary Artery Bypass↗
PubMed2001

[Robotic surgery--surgical and anesthesiologic implications].

Because of the restricted freedom of movement inherent in endoscopic standard instruments wholly endoscopic heart surgery has not been possible up to now. The development of such techniques was especially hindered by the rib cage. Now the precision which is imperative for bypass surgery or valve reconstruction is made possible by telemanipulator systems. Preconditions for this method are cardiopulmonary bypass-techniques which allow a cardioplegic cardiac arrest with closed chest and extensive hemodynamic monitoring which enables the anesthesiologist to make exact diagnoses without having a direct view on the heart. After an extensive experimental phase a telemanipulation system is successfully in use since May 1998 in the Cardiac Center in Leipzig.

Anesthesia↗
PubMedDate not supplied

Treatment of inoperable tracheobronchial obstructive lesions with the Palmaz stent.

PURPOSE: The treatment of inoperable tracheobronchial stenoses with Palmaz stents is analyzed in terms of the clinical effect, typical complications, and long-term follow-up. METHODS: Twenty-seven Palmaz stents were placed in 22 patients with the help of a rigid bronchoscope. RESULTS: Stents were implanted in the distal trachea, the main bronchi, and the lower lobe bronchi. Twenty-one of 22 patients reported an immediate subjective improvement in their respiratory situation. The mean survival time was 12 months; in two patients the stents were well tolerated for up to 40 months. A redilation of three stents was successful up to 33 months. In three cases a dislocation of the stent was observed; after bronchoscopic retraction a new stent was successfully implanted in each case. CONCLUSIONoff Treatment of inoperable tracheobronchial stenoses with the Palmaz stent is a safe procedure that provides an immediate improvement of the patient's pulmonary situation. The Palmaz stent shows a minimal complication rate in the long-term follow-up.

Adult↗