Biomedical subjects

P G Kirchhoff

Publications and source records attributed to P G Kirchhoff.

At least 55 records · Page 3Linked to original sources

PubMed1976

[Surgical considerations on levo-atrial systemic vein (author's transl)].

The levo-atrial systemic vein is a special type of persistent left superior vena cava and is associated with other intracardiac lesions most often. Hemodynamically there is a right to left shunt. The operative procedure may consist in a ligature in relation to the anatomic situation. The intraatrial correction intends a drainage to the right atrium. Of 7 cases four times a intracardiac rerouting was achieved but two times a ligation was performed.

Child↗

PubMed1976

[Intraventricular conduit for complex forms of transposition of great vessels (author's transl)].

Complex forms of transposition of great vessels necessitate different approaches to correction. In a case of double outlet right ventricle with d-transposition and atrioventricular concordance and a subvalvular pulmonary stenosis an intraventricular conduit with a 16 mm Dacron vascular prosthesis was used. This was anastomosed in an acute angular manner with the muscular margins of the VSD and routed to the base of the aorta. Surgical and anatomic implications are discussed.

Cardiac Catheterization↗

PubMed1976

[The prognosis of the transitory disturbances of av-conduction following cardiac surgery (author's transl)].

Out of 2250 cases with open heart surgery 106 patients were examined because of disturbances of av-conduction in the Department for Cardiology of the Childrens Hospital of the University of Göttingen. 38, 7 percent of all av-conduction disturbances have persisted, whereas 61, 3 percent were reversible. Especially the ventricular septal defects, the tetralogy of Fallot and the endocardial cushion defects are discussed. These lesions are predisposed for postsurgical av-disturbances because they are near to the av-conduction tissue. In this paper it has been demonstrated that the av-conduction disturbances, which last for more than one week, have only a little chance to return to sinus rhythm. Those which endure more than four weeks, will persist. The longer the av-conduction disturbances are lasting, the less is the possibility for restitution of sinus rhythm.

Adolescent↗

PubMed1975

[Complications in pacemaker treatment caused by electrodes (author's transl)].

A total of 531 transvenous and 240 thoraco-abdominal electrodes were implanted into 624 patients, the latter as part of a thoracotomy. The complication rate was 35% for transvenous and 33% for epicardial implantations. The most common complication with transvenous electrodes was dislocation (17%), followed by myocardial (5%) and skin perforation (2%). With epicardial electrodes the complications were exit blocks (9%), disconnections (5.5%) and wire breaks (14%). These complication occurred in 1.5%, 2% and 4.5%, respectively, with transvenous electrodes. Electrode dislocations were particularly common in the first year after implantation, while wire breaks became more common as the interval sinceimplantation increased. Overall there was, therefore, no significant difference in complication rate between the two types of electrodes. But the surgical and early mortality ratewas higher after epicardial implanation (with thoracotomy)than transvenous implantation (11% and 6%, respectively). Transvenous implantation is recommended not only for old but also foryoung patients (with a long life expectancy), in combination with long-life pacemakers.

Abdomen↗

PubMed1975

[Rastelli operation for complete transposition of the great vessels, ventricle septum defect and pulmonary atresis].

We report about a 6 year old patient with complete transpositon of the great arteries, a ventiricle septum defect, and pulmonary atresia, who was operated using Rastellis technique. A Hancock-prothesis of of 20 mm diameter was used for reconstruction of the outflow tract of the right ventricle and anastomosed distal with the pulmonary artery on the left side of the aorta. The proximal anastomosis was performed with the right ventricle after a longitudinal ventriculotomy. The intraoperative pressure recordings and the post-operative studies revealed a very good early result.

Blood Pressure↗

PubMed1975

[Diangosis and treatment of pulmonary arteriovenous fistula in infancy (author's transl)].

Pulmonary arteriovenous fistulas are seldom diagnosed in infancy because of few signs and symptoms in early life. The clinical picture is due to the right-to-left shunt and includes dyspnea, cyanosis, polycythemia, clubbing, and murmur over the fistula. The diagnosis can be suspected by demonstration of a typical density on chest X-ray. It can be established by angiocardiography. Because of the life-threatening complications resectional treatment is recommended already in infancy. A case is reported, diagnosed on the second day of life by angiocardiography and treated 3 months later by lobectomy.

Adolescent↗

PubMed1975

[Comparison of tolerance to ischemia in human and animal myocardium during various forms of induced cardiac arrest (author's transl)].

In a total of 16 patients the tissue pH was determined on myocardium both during surgery and on isolated samples. Cardiac arrest was induced by hypothermal infusion cardioplegia and external cooling. In the isolated human myocardium section pH values were continuously determined at 15 degrees C. Parallel to these measurements samples were taken for electron microscopic examinations. In this way the pH limit under which the human myocardium cannot be revived could be visualized by additional morphologic examination. These results and those from the intrasurgical measurements with a fixed heart muscle surface probe were compared with each other and with results from animal experiments.

Adenosine Triphosphate↗

PubMed1975

[Early postoperative diagnostic management by arterial-reobstruction after vascular operations using the ultrasonic flowmeter (author's transl)].

The Doppler ultrasonic method can confirm the success of the operation in the early post-operative phase after reconstructive vascular operations as an essential non-invasive technique or clear a doubtful improvement of the blood flow. Thus an arteriography can be indicated in good time. On the basis of reconstructive cases the usefulness and the advantageous application of the Doppler ultrasonic flowmeter in the operating theater is demonstrated.

Adolescent↗

PubMed1975

[Diagnostic and therapy of postoperative cardiac low-output-syndrome by means of intraaortic balloon pumping (IABP) or external counterpulsation (ECP)--a comparison (author's transl)].

A beneficial influence on the myocardial energy imbalance of the hypoxaemically damaged heart can be reached with either intraaortic balloon pumping (IABP) or external counterpulsation (ECP). In the realm of our acquired clinical experience with two groups of patients, the technical demands of these cardiac assist devices are discussed and distinguished from one another in relation to different indications.

Adult↗

PubMed1975

[Ventricular septal defect associated with fibrous subvalvular aortic stenosis: problems in the diagnosis and in the surgical management (author's transl)].

Only 9 of more than 900 operated patients with ventricular septal defects suffered from this rare combination. The problems of the diagnosis are discussed. Only in one case this diagnosis was made praeoperatively, in 6 cases intraoperatively and in two cases only postoperatively. In the last two cases a reoperation was necessary. The surgical methods are described and the results of surgery are communicated.

Adolescent↗

PubMed1975