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Biomedical subjects

C C Lu

Publications and source records attributed to C C Lu.

At least 109 records · Page 6Linked to original sources
PubMed1992

Quantitative measurement of muscle and subcutaneous fat thickness in newborn by real-time ultrasonography: a useful method for site and depth evaluation in vaccination.

In order to quantify muscle thickness and choose the appropriate site for intramuscular injection of vaccines in neonates, we used ultrasonography to measure muscle and subcutaneous fat thickness of anterolateral mid-thigh, upper outer quadrant of buttock and middle area of deltoid in fifty full term (group 1) and thirty low birth weight (group 2) infants. A Hitachi EUB40 real-time scanner and a 5 MHz transducer was used in the study. We delineated the normal distribution of muscle and subcutaneous fat thickness in mid-thigh, buttock and deltoid areas of full term and low birth weight infants. There was no significant difference between male and female infants in the two groups. Muscle and subcutaneous fat thickness in the thigh area was 11.8 +/- 1.9 mm and 3.8 +/- 0.4 mm, respectively, in group 1; 8.6 +/- 1.7 mm and 2.7 +/- 0.5 mm in group 2. Figures in the buttock area were 10. 1 +/- 1.5 mm and 3.7 +/- 0.5 mm in group 1, 6.9 +/- 1.2 mm and 2.7 +/- 0.7 mm in group 2; and in the deltoid area were 5.2 +/- 0.7 mm and 3.4 +/- 1.5 mm in group 1 and 3.8 +/- 0.8 mm and 2.3 +/- 0.6 mm in group 2. There was significant logarithmic correlation between muscle thickness and body weight (r = 0.6, 0.8, 0.6) and muscle thickness and body length (r = 0.4, 0.6, 0.6) in thigh, buttock and deltoid areas of the low birth weight infants. In contrast, there was significant logarithmic correlation only between buttock muscle and body weight (r = 0.5) in the full term infants.(ABSTRACT TRUNCATED AT 250 WORDS)

Adipose Tissue↗
PubMed1991

[Tuberous sclerosis associated with pulmonary lymphangioleiomyomatosis].

Lymphangioleiomyomatosis (LAM) is a rare disease of women of childbearing age in which there is hyperplasia of atypical smooth muscle along lymphatics in the lung, thorax, and abdomen. Since Lautenbacher's first description in 1918, less than 100 cases of Bourneville's tuberous sclerosis (BTS) with involvement of the lungs have been reported. Their clinical, radiologic and pathologic manifestations are so strikingly similar to those of pulmonary lymphangioleiomyomatosis (PLM) that some authors have considered PLM to be a form fruste of BTS. We present a case of PLM with clinical pictures of dermatologic stigmata and kidney angiomyolipoma of tuberous sclerosis but free of neurologic symptoms. After the development of a recurring spontaneous pneumothorax, she had a downhill course and progressive pulmonary functional defect.

Adult↗
PubMed1990

Pyloric deformation from peptic disease. Radiographic evidence for incompetence rather than obstruction.

We have used double-contrast radiographic techniques to clarify what changes in the configuration and movements of the gastroduodenal junction result when peptic lesions involve the distal gastric segment between the proximal (PPL) and the distal pyloric muscle loop (DPL). Among 50 cases of pyloric ulceration diagnosed during a four-year study period, 18 cases fulfilled all study criteria. Ulcers maintained a consistent location with regard to the muscular structures of the pylorus, and by affecting these structures, led to many strange deformations of the gastric outlet including permanent pseudodiverticula and reversal of pyloric angulation. The most common site for peptic lesions in the pyloric segment was the protuberance of the lesser curvature called the pyloric torus; many torus lesions extended into and destroyed the DPL. This led to widening of the gastric outlet and radiographic evidence of increased duodenogastric reflux. Pyloric closure was further impaired in this setting because the mucosa no longer prolapsed into the gastric outlet and did not occlude the pyloric lumen as it normally does. Less common lesions involved the greater curvature and the PPL. In one patient, scarring of the PPL led to an antral web and gastric hyperperistalsis. This was the only patient who required operation for chronic gastric outlet obstruction. One-third of the 18 patients had reflux esophagitis in addition to peptic pyloric disease. In most patients without additional ulcerogenic risk factors, treatment with antisecretory agents led to the healing of ulcer craters. We conclude that the morphologic and functional changes of the gastric outlet caused by peptic lesions depend, in part, on the effect the ulcer has on the underlying pyloric musculature.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1990

[Clinical studies of neonatal hyperbilirubinemia treated with blood exchange transfusion].

From April 1984 to November 1989, 194 cases of neonatal hyperbilirubinemia treated with blood exchange transfusions (BET) were studied. The patients included 127 male and 67 female neonates, with an age ranged from 13 hours to 16 days. The most common cause was idiopathic (52.6%), followed by G-6-PD deficiency (23.7%), and sepsis (12.9%). Most of the neonates received BET at the 4th day of birth (23.2%), but there were still 30 cases (15.5%) that received BET after 1 week of age. There were 17 cases (8.8%) with maximum serum bilirubin lower than 20 mg/dl before receiving BET, five of them were LBW infants; 11 cases (5.7%) were greater than 40 mg/dl. The mean of maximum serum bilirubin was 26.9 +/- 7.96 mg/dl. Most of the cases received BET once (145 cases) or twice (33 cases). There were two cases that received up to six BET's. One was G-6-PD deficiency and one idiopathic in etiology. No significant difference of BET frequency between sex or body weight (p greater than 0.05) was found. Newborns with higher serum bilirubin due to G-6-PD deficiency, received more BET (p less than 0.05). No significant differences of the pH value (7.33 +/- 0.08 vs 7.35 +/- 0.10) and bicarbonate values (21.20 +/- 3.99 vs 22.00 +/- 3.83 mM/L) occurred before and after blood exchange transfusion (p greater than 0.1). The serum calcium decreased significantly after BET (3.88 +/- 0.91 vs 3.15 +/- 6.97 mEq/L, p less than 0.05). There were 11 deaths in this series, the mortality rate was 5.7%. Three cases (1.5%) were dead within 6 hours after BET.(ABSTRACT TRUNCATED AT 250 WORDS)

Bilirubin↗
PubMed1989

[Bronchoscopic examination in immuno-compromised host with hypoxemia due to Pneumocystis carinii pneumonia--case report].

The differential diagnosis of newly developed pulmonary infiltrate in CXR film of immunocompromised host including infection, neoplasm, pulmonary edema, pulmonary hemorrhage, cytotoxic drug induced pneumonitis, radiation pneumonitis and transfusion induced pneumonitis. If clinical course changed rapidly and the patient had fever, cough and dyspnea, then, opportunistic infection should be considered at first. Fiberoptic bronchoscopy with bronchoalveolar lavage (BAL), brushing and trans- bronchial biopsy (TBLB) will give most of informations. If the patient had hypoxemia, high, flow O 2 (even pure O 2) should be given to the patient and pulse oximeter used to monitor his state of oxygenation continuously. BAL should be done at first for its high yield in infectious cases. If the condition allowed us to perform more procedures, brushing and TBLB should also be considered. We present one case of polyarteritis nodosa with Pneumocystis carinii pneumonia after longterm endoxan and corticosteroid treatment. This patient had typical history and diagnostic procedures.

Bronchoalveolar Lavage Fluid↗
PubMed1989

Intrauterine single fetal demise in a twin gestation. A case report.

Intrauterine demise of one fetus in a twin gestation as a rare occurrence not only entails the higher premature and neonatal death rates, fetal distress or abnormal presentation on the surviving twin, but also threatens the mother with toxemia. The consumptive coagulopathy imposes a potential risk of health on both mother and the surviving fetus or neonate. We herein report a 29-year-old nullipara in such case who finally delivered a stillborn and a living one. High risk management and careful pediatric follow-up are recommended.

Adult↗
PubMed1988

Developmental variation of the diaphragm and liver in Fischer 344 rats.

The nature and frequency of a developmental variation of the diaphragm and liver in Fischer 344 rats are described. Totals of 20, 98 and 55 (25 for caesarean-sectioning and 30 for natural delivery) mated female rats were used for Experiments 1, 2, and 3, respectively. Each rat was intubated (gavage) with either an aqueous suspension of 0.2% METHOCEL, 0.25% methyl cellulose, or distilled water as a single daily dose from days 6 through 15 (inclusive) of gestation. On the 20th day of gestation, a caesarean-section was performed, and the uterine contents of each rat were examined. A gross necropsy was performed on the pups of 30 mated female rats on day 21 postpartum. The visceral examinations conducted on these fetuses and pups included an evaluation of a developmental variation in the diaphragm and liver. The variation consisted of a thin fibrous central tendon of the diaphragm with an area of liver (0.5-3 mm diameter) that protruded within the thin central tendon of the diaphragm. The incidence (mean % of fetuses affected per litter) of the diaphragm/liver developmental variation was 9% and 11% for METHOCEL- and water-treated groups, respectively. A thin central tendon was present in the diaphragm of all fetuses of methyl cellulose-treated dams; these fetuses did not have a raised area of the liver present within the diaphragm's central tendon. However, in a few weaned pups of the Fischer 344 rats in this study, liver protruded within the central tendon of the diaphragm.(ABSTRACT TRUNCATED AT 250 WORDS)

Animals↗
PubMed1988

Small bowel enteroclysis survey.

A survey questionnaire was sent to 125 radiology programs to determine the frequency and indications for the use of small bowel enteroclysis. Sixty-seven of the 84 respondents perform small bowel enteroclysis while 17 do not. The 3 most common indications for enteroclysis are detection of unexplained gastrointestinal bleeding, partial small bowel obstruction, and Crohn's disease. We conclude that although small bowel enteroclysis is a well-established examination, there are wide differences in the frequency with which it is performed, the techniques of examination, and indications for its use.

Barium Sulfate↗
PubMed1988

Renal sinus malignant lymphoma: a case report.

We report a case of renal sinus non-Hodgkin's lymphoma without contiguous adenopathy. Magnetic resonance and computed tomography images of this rare tumor were correlated with a pathologic specimen. On computed tomography the renal sinus lymphoma was evaluated as a well circumscribed, low-density mass owing to the mixture of the lymphomatous cells and fat tissues. Magnetic resonance showed the replacement of the renal sinus fat tissues with a spoke-like solid mass. The renal artery and vein were also evaluated thoroughly and were without tumor thrombosis.

Female↗
PubMed1988

Antenatal fetal blood flow in the descending aorta and in the umbilical vein and their ratio in normal pregnancy.

One hundred and sixty sequential measurements of umbilical vein blood flow (UVBF) and descending aorta blood flow (DABF) in normal fetuses were performed in utero by the duplex real-time ultrasound and pulsed Doppler technique. Throughout pregnancy from 26 to 41 weeks the blood flow velocity of the umbilical vein (UV) and the descending aorta (DA) remained relatively constant, while the diameter of UV and DA, UVBF and DABF increased with advancing gestational age. Moreover, the UVBF-to-DABF ratio was nearly constant, with a mean value of 64% from 26 weeks onwards. The DABF-to-abdominal area (DABF-to-AA) ratio was constant throughout pregnancy, with a mean value of 7.0 ml/min/cm2. We call these two constants the umbilical-aortic index and descending-aortic index. These relationships may be of help in the diagnosis of intrauterine growth retardation and other fetal disorders.

Adult↗
PubMed1988

Umbilical vein blood flow measurement in nonimmune hydrops fetalis.

Twenty-five measurements of fetal umbilical vein blood flow were performed in 22 cases of nonimmune hydrops fetalis using real-time and pulsed Doppler duplex ultrasound. The umbilical vein diameter, blood velocity, and blood flow in fetuses with hemoglobin Bart's hydrops fetalis were usually higher than those in fetuses with hydrops fetalis from other causes. Umbilical vein blood flow measurement appears to be an effective technique for differentiating hemoglobin Bart's from non-Bart's hydrops in this series. This hemodynamic characteristic of umbilical vein blood flow may be helpful in determining the etiology of nonimmune hydrops fetalis.

Adult↗