Controlled study comparing CAM treatment with occlusion therapy.
Explore the source record for details and available documents.
Amblyopia↗
Biomedical subjects
A Rydberg
Publications and source records attributed to A Rydberg.
Electrocardiographic ST segment depression and clinical function in children with Fontan circulation.
Previous studies noted that Fontan patients have electrocardiographic ST depressions during exercise tests and on 24-hour ambulatory electrocardiographic (ECG) monitoring. This study investigated whether the ST depressions were correlated to clinical function (NYHA Functional Classification). Forty-five children in two groups were examined--15 patients with Fontan circulation and 30 with a structurally normal heart, matched for sex, height, and weight. Clinical and echocardiographic examinations were performed. The clinical state was defined as NYHA functional classes I-IV. All 45 children underwent 24-hour ECG and an analysis of ST changes was performed, with ST segment depression > 0.20 mV at ST 60 regarded as significant. Twelve of 15 patients had significant 24-hour ECG ST depressions; in 9 of 12 patients these occurred on more than one occasion. Comparing 24-hour ECG recordings from patients in NYHA I with patients in NYHA II or III showed a significant difference in depth (p = 0.0023), duration (p = 0.0016), and number of ST depressions (p = 0.0001). None of the matched healthy children showed ST depressions. Repeated ST analysis on 24-hour ECG shows that the ST depressions seem to be correlated to functional status and this may be a useful tool in clinical praxis.
Adolescent↗
Heart rate variability in children with Fontan circulation.
Heart rate variability (HRV) can be used to study cardiovascular autonomic control. This study examines HRV in children with Fontan circulation and its change over time. Thirty-four children in two groups were examined. Group A consisted of 10 patients who had undergone total cavopulmonary connection. Group B consisted of 24 healthy children/adolescents matched for gender, height, and weight. To analyze HRV parameters, all examinations included echocardiography and 24-hour ambulatory electrocardiogram. Comparing all patients and controls, there were no significant differences in HRV parameters. Analyzing subgroups of patients younger than 10 years old, two of the HRV parameters were significantly different compared to controls. For the group of patients older than 10 years, eight of the HRV parameters were significantly reduced. Most significant differences were found regarding low-frequency range (p < 0.008) and high-frequency range p < 0.008. This study confirms the finding of earlier studies that patients with Fontan circulation have a reduced HRV, and our findings indicate that there is a progressive reduction of HRV over time.
Adolescent↗
The abnormal contralateral atrioventricular valve in mitral and tricuspid atresia in neonates: An echocardiographic study.
Abnormalities of the mitral valve (MV) or the tricuspid valve (TV) morphology and/or function in patients with functional single ventricle may result in early morbidity and death. The purpose of this study was to determine the incidence of contralateral atrioventricular valve (AVV) pathologies in mitral valve atresia (MA) and tricuspid valve atresia (TA). We retrospectively reviewed the echocardiographic data of 50 neonates with MV and 20 with TA. Appearance of the papillary muscles, chordae tendinae, and valve leaflets was assessed. AVV regurgitation was semiquantitated by color-flow Doppler and the AVV annulus diameter was measured and indexed to body surface area. MV abnormalities were found in 9 of 20 (45%) of patients with TA. The MV was myxomatous in 9 patients, the leaflets were redundant in 5 patients, and prolapsing occurred in 4 patients. Mild regurgitation was found in 2 patients. In 18 of 20 (90%) patients MV annulus size was larger than 95% of predicted normal values. TV abnormalities were found in 12 of 50 (24%) patients with MA. The TV was myxomatous in 4 patients, prolapsing in 2, and redundant in 3, and moderate TV regurgitation was found in 3 patients. In 29 of 50 (58%) patients TV annulus size was larger than 95% of predicted normal values. Contralateral AVV abnormalities in tricuspid and mitral valve atresia are common and should be assessed carefully before surgical procedures.
Blood Flow Velocity↗
Assessing visual function in children younger than 1 1/2 years with normal and subnormal vision: evaluation of methods.
PURPOSE: Methods for detecting subnormal vision early in life are needed to adequately diagnose the condition and begin treatment and rehabilitation. METHODS: Forty-six children ages 1 month to 1 1/2 years with either assumed normal vision, visual impairment due to eye disease, or strabismus were examined with the following tests: Stycar rolling balls; preferential looking (Teller acuity cards); and the ability to detect raisins, puffed rice, and sugar strands on two different backgrounds, one white and one black. RESULTS: Children with visual impairment and strabismus often showed normal values for their age, and children with assumed normal vision sometimes had values below those established for normal development of vision with the Stycar rolling balls and the Teller acuity cards. CONCLUSIONS: It is not possible to use these tests to reliably differentiate among normal vision, visual impairment, or strabismus in children younger than 1 1/2. Not until recognition acuity, symbols, or letters can be tested can reliable results be obtained. However, the tests are useful to estimate the general visual function of children in this age group.
Contrast Sensitivity↗