Biomedical subjects

P Marschalkó

Publications and source records attributed to P Marschalkó.

5 recordsLinked to original sources

PubMed2006

Trendelenburg positioning does not prevent a decrease in cardiac output after induction of anaesthesia with propofol in children.

BACKGROUND AND OBJECTIVE: Induction of anaesthesia may cause decreased cardiac output and blood pressure. Head-down tilt is often the first clinical step to treat hypotension. The objective of this randomized single centre study was to determine, with the use of impedance cardiography (ICG), whether Trendelenburg positioning modifies the haemodynamic response to propofol/fentanyl induction of anaesthesia in ASA I children. METHODS: Thirty ASA I children aged between 7 and 16 years scheduled for elective minor orthopaedic surgery were included. After intravenous induction with propofol and fentanyl in the head-down group (HDG, n = 15), 5 min of 20 degrees head-down tilt was applied. In the supine group (SG, n = 15), no change in the supine position was made. Heart rate (HR), mean arterial blood pressure (MABP), end-tidal carbon dioxide (ETCO(2)), stroke volume index (SVI), cardiac index (CI), systemic vascular resistance index (SVRI) and Heather index (HI) were recorded before (B), at 3 (A(3)), 5 (A(5)) and 8 (A(8)) minutes after induction in each group. RESULTS: After induction, a significant decrease in CI, MABP, HR and HI was recorded in both groups. In the study group, significantly lower values of HR (66 vs. 78 beat/min) and higher values of SVI (42.9 vs. 40.6 ml/min/m(2)) were measured at A(3) compared with the control group. After induction, no difference in CI and SVRI was found between the two groups. CONCLUSION: The present study shows that cardiac performance is not improved by Trendelenburg positioning after propofol/fentanyl induction of anaesthesia in children.

Adolescent↗

PubMed1994

[Behavior of adamantinoma of the long bones based on long-term follow up studies].

Authors report on the long time (in average 12 years, range: 5-36 years) follow-up results of 5 cases of adamantinoma, localized on the tibia. In one case recurrence was found very late, 20 and 36 years after the primary wide resection, and resection was repeatedly performed. Because of problems of differential diagnosis in one case the tumor was excised intralesionally (curettage + plasty with cancellous bone). 7 years later the persistence of the process was found only. 1 patient died in consequence of pulmonary metastasis 9 years after the primary operation. Wide resection is suggested both for the removal of the primary tumor and the recurrences, appearing very late. For the reconstruction of the bone autologous fibula is proposed. Adamantinoma is thought to be a low malignity tumor, the outcome of which cannot be predicted from the clinical and histological findings. Considering the late recurrences and metastasis a long range, minimally 10 years, following of the patient is thought to be necessary.

Adult↗

PubMed1991

[Limb lengthening with simultaneous correction of deformities].

In congenital malformation of the limbs the shortening of the extremity appears frequently together with its deformity. With Ilizarov's apparatus the limb may be lengthened simultaneously with the correction of the deformity. In spite of the fact that the use of the apparatus is rather complicated and complications are frequent, in 75 cases out of 102 excellent, in 23 good results were achieved. The various indications and results are demonstrated in 7 cases.

Adolescent↗

PubMed1989

[Rare manifestations of Perthes disease].

Authors briefly summarize the rare manifestations of Perthes' disease. The bilateral appearance, the possibility of its connection with constitutional disorders, the manifestation on hips already damaged, the forms appearing earlier or later than usual are described. The prognostical and the therapeutic significance of recognizing these forms of Perthes disease is stressed.

Child↗

PubMedDate not supplied

Limb lengthening operations.

Limb lengthening operations were first used at the beginning of this century, they were, however, performed more frequently only in the fifties. The various, continuously elongating devices have made possible a substantially greater lengthening than earlier. Wide-range investigations were begun with the various distraction devices and the results were examined in regard to the site of lengthening, the injury of the periosteal and endosteal vascular supply during the operation and the extent and rate of the lengthening. Detailed results of 224 lengthening operations performed in 191 patients are presented in Tables 1 to 8. Attention is called to the fact that the operation should be performed strictly individually, and the patients should be well prepared to the operation and followed carefully. The number of complications increases in direct ratio with the measure of lengthening, the end result is, however, influenced only by a minor part of the complications.

Adolescent↗