Search PubMed⌕ Search

Biomedical subjects

H Kikuchi

Publications and source records attributed to H Kikuchi.

1,053 records · Page 59Linked to original sources
PubMedDate not supplied

Dynamic CT in patients with superficial temporal-middle cerebral artery anastomosis.

Using dynamic computed tomographic (CT) scanning and an iodinated contrast material, changes in cerebral hemodynamics in cerebrovascular occlusive disease were studied before and after anastomosis of the superficial temporal artery and the middle cerebral artery. Because the iodinated contrast material is a nondiffusable indicator, it does not pass through the bloodbrain barrier. Thus, this method is capable of measuring the relative tissue blood flow (intravascular blood flow) but incapable of measuring the absolute cerebral blood flow. However, it does allow the three-dimensional measurement of cerebral hemodynamics by a simple procedure, and when the primarily clear brain structure seen with CT is considered, it is a very useful diagnostic method.

Arterial Occlusive Diseases↗
PubMedDate not supplied

Short-chain carboxylic acid in the feces in patients with pancreatic insufficiency.

Short-chain carboxylic acids in the feces of 12 patients with chronic pancreatitis having steatorrhea and 18 healthy subjects were determined by high-performance liquid chromatography. The fecal amount of the patients with chronic pancreatitis was increased to about twice that of the control, and the fat in the feces increased to eight times. The excretion of short-chain carboxylic acids increased to about three times. The short-chain carboxylic acid concentration regarded as derived from protein or amino acid, such as iso-butyrate, isovalerate, and n-valerate, was significantly increased in patients with chronic pancreatitis. From the above results, our data suggest that there is maldigestion of protein besides that of carbohydrate. And we confirmed that these data are an in-vivo illustration of the phenomena which have been studied in-vitro experiments, when fecal bacteria were incubated with peptide or amino acids as a substrate.

Adult↗
PubMedDate not supplied

A simple and efficacious criterion based on serum LH levels to time hCG administration for human in vitro fertilization.

OBJECTIVE: To test the efficacy of a simple criterion--LH level--for administration of hCG in an IVF program. DESIGN: Prospective, with retrospective analysis of other criteria for hCG administration. SETTING: University hospital IVF program. PATIENTS AND INTERVENTIONS: Eighty-four patients, in 110 cycles, were given 150-300 IU at 10-11 A.M. daily beginning on day 3 of the cycle. Serum LH measured daily 8:30-9:30 A.M., hCG administered on night of day LH level first exceeded J, defined as minimum value + (day 3 value-minimum) x 1/3. OUTCOME MEASURES: Pregnancy (after IVF + ET); serum concentrations of estradiol and LH. RESULTS: Total and ongoing pregnancy per cycle: 35% and 27% respectively. If hCG is administered one day early or late by the J criterion, the pregnancy rate is reduced. CONCLUSIONS: Pregnancies occurred over wide follicle diameter (14-21 mm) and estradiol level (229-2,050 pg/mL) ranges. LH is recommended for timing hCG administration.

Chorionic Gonadotropin↗
PubMedDate not supplied

Treatment of a spontaneous carotid cavernous fistula using an electrodetachable microcoil.

The authors detail their use of a modified version of an electrolysis coil currently manufactured in the United States. They connect a platinum wire to a stainless steel wire via a copper segment, and apply low voltage current to induce thrombosis while electrolysis of the copper effects separation of the platinum coil. Their technique shows potential for treatment of complicated carotid cavernous fistulas.

Arteriovenous Fistula↗
PubMedDate not supplied

Fat-soluble vitamins in patients with chronic pancreatitis (pancreatic insufficiency).

The fat-soluble vitamin contents in the blood (vitamins A, D, E, and K) were determined in 12 patients with chronic pancreatitis (exocrine pancreatic insufficiency) and in 20 healthy adults by the HPLC and CPBA methods. In addition, 9 g (3 g x 3 times) of high potency pancreatin was given to 11 patients with chronic pancreatitis (CP) for approximately 1 month and changes in the blood fat-soluble vitamin levels were evaluated before and after the treatment. The major component of vitamin E was alpha-tocopherol. The mean alpha-tocopherol level in normal individuals was 0.97 mg/dl, while it was significantly reduced in CP patients (p < 0.01). The vitamin A, D, and K levels had also been reduced in patients with CP, but the differences were not significant (although some patients in this group exhibited significant reductions from the levels of normal individuals). Only the blood vitamin E level showed a significant correlation with the fecal fat excretion or the fat absorption rate. None of the patients with CP exhibited an overt fat-soluble vitamin deficiency (i.e., the deficiency of fat-soluble vitamins was at a subclinical level). These results indicated that CP patients suffer from a latent fat-soluble vitamin deficiency and that the vitamin E level is closely related to a dysfunction of fat digestion. It was suggested that the dietary intake of each fat-soluble vitamin should be evaluated further.

Adult↗