Aortic allograft implantation techniques: pathomorphology and regurgitant jet patterns by Doppler echocardiographic studies.

Background: The diagnosis of allograft-specific pathology by echocardiography has important consequences for patient counseling and research. This study describes the pathomorphologic findings and color Doppler jet patterns in a consecutive series of patients after allograft placement with either the subcoronary implantation or root replacement technique.

Methods: From 1987 to July 1996, the subcoronary allograft implantation technique and root replacement technique were used in 82 patients and 70 patients, respectively.

Nasal ciliary beat frequency is age independent.

Objectives: Evaluate the age-dependency of ciliary beat frequency (CBF) in biopsies after ciliogenesis in culture.

Study Design: Retrospective analysis of CBF and ciliary ultrastructure in biopsies and after ciliogenesis from 203 individuals, aged 3 months to 74 years.

Methods: All patients with successful culture were included.

Reproducibility of color Doppler flow quantification of aortic regurgitation.

The preferred method for quantification of aortic regurgitation severity with color Doppler echocardiography is the assessment of the ratio of jet diameter to left ventricular outflow tract diameter and jet area to left ventricular outflow tract area. However, the reproducibility of these measurements is not known and may limit its clinical application. This study was performed to identify sources of variability and reproducibility of the echocardiographic data.

Lethal femoral-facial syndrome: a case with unusual manifestations.

The femoral-facial syndrome is a very rare syndrome of uncertain inheritance comprising hypoplastic femora, microretrognathia, and a peculiar facies. We report an additional observation detected by ultrasound at 25 weeks and diagnosed at birth. In addition to the malformations usually described in this syndrome, there were heterotopias of the brain, partial agenesis of the corpus callosum, bilobed lungs, intestinal malrotation, and vertebral segmentation defects.

Allograft reconstruction of the right ventricular outflow tract.

Objective: Evaluation of allograft reconstruction of the right ventricular outflow tract (RVOT).

Methods: From 1986 to April 1995, 201 allografts (146 pulmonary, 55 aortic) were implanted in 189 patients for conduit reconstruction of the RVOT in congenital heart disease or in the pulmonary autograft procedure. The mean age at allograft implantation was 16 years (range 2 weeks - 54 years).

Environmental lead and renal effects in children.

The effect of lead on five renal-effect parameters was studied in 151 children (i.e., 3-6-y-olds) who resided at different distances from a lead smelter in Baia Mare, Romania.

Subcoronary implantation or aortic root replacement for human tissue valves: sufficient data to prefer either technique?

The aortic root replacement technique with aortic allograft or pulmonary autograft might be superior to the subcoronary allograft implantation technique with regard to aortic regurgitation. We explored the influence of the learning process on the incidence of reoperation and the severity of postoperative aortic regurgitation as assessed by color Doppler echocardiography. The subcoronary implantation technique was used in 81 patients, and root replacement was done in 63 patients.

Outcome after right middle lobe syndrome.

The long-term pulmonary consequences of right middle lobe syndrome (RMLS) in childhood are not known. Therefore, outcome was evaluated in 17 children with RMLS diagnosed in early childhood (mean age, 3.3 years; SD, 1.

Aortic root replacement with a pulmonary autograft.

A series of 42 consecutive patients with exclusively aortic root replacement using the pulmonary autograft is presented. The mean age at operation was 19.3 years (range 0.

Nucleolar organizer regions in the normal and carcinomatous epithelium of the uterine cervix. A morphometric study.

Nonhistone nucleoproteins associated with the nucleolar organizer regions (NORs), the genes coding for the ribosomal RNA precursor, can be visualized by silver staining. The black dots (AgNORs) appearing on the nuclei are thought to reflect cell differentiation. In this study, AgNORs were counted and their area was measured and compared with the area of the nuclei in normal and carcinomatous cells of the uterine cervix.

Effect on ovulation of surgically induced endometriosis in rabbits.

To study the effect of endometriosis on follicular rupture, endometrial tissue was autografted to New Zealand White rabbits. Endometrium was surgically implanted into the peritoneal cavity or into the rectus muscle. Human chorionic gonadotropin was administered to induce ovulation.

[Unruptured luteinized follicle syndrome and experimental endometriosis in the female rabbit].

To study the effect of endometriosis on follicular rupture, endometrial tissue was autografted to New Zealand White rabbits. Endometrium was surgically implanted into the peritoneal cavity. Human chorionic gonadotropin was administered to induce ovulation.