Biomedical subjects

C C Lu

Publications and source records attributed to C C Lu.

156 records · Page 9Linked to original sources

PubMedDate not supplied

Dynamic evaluation of swallowing in patients with cerebrovascular accident.

To determine the specific effects of cerebrovascular accident (CVA) on deglutition, especially relative to the site of CVA, we studied videotapes of barium swallow examinations in 74 patients who had had a CVA. Although there was no distinct correlation between the prevalence of oral and pharyngeal dysfunction and the site of CVA, left CVA was prone to impair only the oral phase, and right CVA tended to impair both phases.

Adult↗

PubMedDate not supplied

CT findings of plexiform neurofibromatosis involving the ileum and its mesentery.

We present a case of plexiform neurofibromatosis involving the ileum and its mesentery. Computed tomography (CT) scans showed a cluster of small soft-tissue density nodules, which represented a cross-sectional image of the enlarged peripheral nerves and wall thickening of the distal ileum. Trapped fat tissue was demonstrated between these enlarged nerves. Histopathologic studies of the resected specimen correlated well with CT findings.

Adult↗

PubMedDate not supplied

CT of abdominal abscess with fistulous communication to the gastrointestinal tract.

We review CT of 24 cases of intraabdominal abscess with fistulous communication to the GI tract confirmed by GI contrast study or fistulogram. Underlying causes of fistulization included recent GI tract surgery (13), diverticulitis (four), unknown etiology (three), malignant neoplasm (two), trauma (one), and pancreatitis (one). Thirteen (54%) abscesses showed air-fluid levels, 14 (58%) showed air bubbles, and seven (29%) showed both. Bowel contrast material was administered in 21 cases, and optimal bowel opacification was effected in 16. However, contrast extravasation into the abscess was noted in only six cases. We conclude that an air-fluid level may indicate the presence of a fistulous communication to the GI tract, but its absence does not necessarily mean there is no communication. Also, recognition of contrast within the abscess is uncommon even with optimal bowel opacification. In cases of clinical suspicion of internal fistula, a fistulogram or GI contrast study should be performed.

Abdomen↗

PubMedDate not supplied

An ultra-high common-mode rejection ratio (CMRR) AC instrumentation amplifier for laplacian electrocardiographic measurement.

Laplacian electrocardiograms (LECGs) localize the moment of activation (MOA) of the heart noninvasively at a nearby point on the chest surface. Tripolar concentric ring (TCR) electrodes provide small, but well-defined, site-specific second spatial derivative signals of the potential on the chest surface for studying the activation sequence of the myocardium. A battery-powered, modified AC instrumentation amplifier (IA) was used as preamplifier to obtain signals with a high common-mode rejection ratio (CMRR). The authors' direct-coupled quasi-high-pass IA has high input impedance and high CMRR, without the need to match capacitors and resistors. The amplifier circuit and two lithium cells were integrated with the substrate for the TCR sensor to minimize inductive pickup by the leads. Combining the natural ability of the TCR electrodes to reject common-mode signals with the high CMRR of the IA made it possible to obtain LECG signals in real time with good signal-to-noise ratio (SNR). The authors observed and recorded the MOAs from 16 sites in a 4-by-4 matrix from the left side of the thorax of each subject. Beat-by-beat changes were observed from one subject showing episodes of bigeminal rhythm. The authors were able to obtain localized signals representing the right and left ventricles from surface TCR electrodes in real time.

Electrocardiography↗

PubMedDate not supplied

Thrombocytosis in children at one medical center of southern Taiwan.

Thrombocytosis in children is common, but usually without symptoms. The causes of thrombocytosis in children are considered to be mostly due to infection, trauma, surgery, blood disease, prematurity, renal disease and chronic inflammation. To evaluate the incidence and etiology of thrombocytosis of the hospitalized patients, patients who were admitted to the Pediatric Department of Kaohsiung Medical College Hospital (KMCH) from October 1996 to November 1997 were studied. There were 2910 cases studied and 220 cases (127 male and 93 female) had thrombocytosis (> or = 500 x 10(9)/L) with a rate of 7.6%. The causes of thrombocytosis are infections (49.5%), Kawasaki disease (6.4%), postsplenectomy (7.8%), blood diseases (3.7%), malignancies (3.2%), renal disorders (3.2%), prematurity (3.2%), tissue damage (4.5%), chronic inflammation (1.8%), recovery from marrow suppression (1.3%), immunologic disturbances (2.2%), essential thrombocythemia (0.5%), and miscellaneous factors (3.7%). Thrombocytosis associated with multiple, simultaneous causative factors was found in 9.0% of these cases. Thrombocytosis secondary to infectious diseases or Kawasaki disease was significantly more common in children under 2 years old. The most commonly associated infectious disease was respiratory tract infection (61.1%). There were 29 children (13.2%) presenting a platelet count of more than 800,000/mm3. However, no thrombotic complications were seen in any of the children. By far, the major cause of thrombocytosis in our cases was reactive in character. Most of the thrombocytosis cases were due to infections, inflammatory diseases, or Kawasaki disease.

Adolescent↗

PubMedDate not supplied

Comparison of immunogenicity of simultaneous and nonsimultaneous vaccination with MMR and JE vaccine among 15-month-old children.

To evaluate the immunogenicity of measles- mumps- rubella (MMR) vaccination with Japanese encephalitis (JE) vaccine nonsimultaneously and simultaneously, 145 babies, aged 15 months were enrolled into two groups. Group A received MMR and JE vaccines nonsimultaneously at an interval of 6 weeks; group B received the vaccinations simultaneously. Antibody titers of MMR and JE were detected before and 8 weeks after vaccination. A total of 118 babies (61 in group A; 57 in group B) completed the study. In group A, mean increments of logarithmic geometric mean titers (GMTs) of MMR and JE were 4.51, 5.93, 4.07 and 1.99; seroresponse rates were 100% (61/61), 77.05% (47/61), 96.72% (59/61) and 59.02% (36/61) respectively. In group B, mean increments of logarithmic GMTs of MMR and JE were 4.35, 5.37, 4.44 and 1.93; seroresponse rates were 98.25% (56/57), 77.19% (44/57), 98.25% (56/57) and 57.89% (33/57) respectively. There were no significant differences between these two groups. These results suggest that simultaneous and nonsimultaneous vaccination with MMR and JE vaccines were similar in immunogenicity.

Antibodies, Viral↗

PubMedDate not supplied

Computed tomographic findings of small-bowel volvulus.

Computed tomographic examinations of two cases of small-bowel volvulus were reviewed. At laparotomy, both cases were proved to be secondary to adhesions. CT examinations showed focal, wedge-shaped, edematous mesentery with trapped fluid between mesenteric folds radiating toward the site of torsion. One case showed the superior mesenteric vein spiraling around the superior mesenteric artery. At laparotomy, affected small-bowel loops showed ischemia in both cases. CT performed in patients with acute abdomen may show findings suggestive of small-bowel volvulus.

Female↗

PubMedDate not supplied

[A survey on weight and height of children (1 month-7 years) and plotting of growth curves (1 month-18 years) in Taiwan, 1987-1988].

From July 1987 to December 1988, 19,625 children in Taiwan were measured for their body weights and heights. They were 9,564 boys and 10,061 girls and were seen either in a well baby clinic of a large community hospital or in the local kindergartens. We divided these children into 64 groups according to their sex and ages. The mean values and standard deviation of body weight and height were tried to correlate with those from children of school age reported for 1987 by the Ministry of Education. Furthermore, body weight and height growth curves were drawn for these children, aged from 1 month to 18 years.

Adolescent↗

PubMedDate not supplied