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Hypermagnesemia is a rare disorder and commonly occurs in patients with renal dysfunction. Supportive therapy for hypermagnesemia consists of administration of high-volume fluids, calcium preparation, diuretics, and, in severe cases, hemodialysis. Few reports have described severe hypermagnesemia patients with normal renal function who improved without hemodialysis. A 56-year-old woman presented with a history of constipation in spite of taking constipation medicine, including MgO. She was brought to our emergency department due to vomiting and diffuse distension of the abdomen. Sudden vomiting, weakness, and lower level of consciousness occurred during examination. Her blood pressure dropped to 77/34 mmHg, and deep tendon reflexes of the limbs disappeared. Abdominal computed tomography showed bowel distension with wall edema, and biochemical testing showed serum Mg at 13.5 mg/dl. She was diagnosed with severe hypermagnesemia associated with intestinal obstruction and administered intravenous loop diuretics and calcium preparation in addition to high volumes of normal saline. As the serum Mg level steadily declined, her level of consciousness returned to usual. This case suggests that severe hypermagnesemia can occur in patients with normal renal function and constipation under MgO. Severe hypermagnesemia with normal renal function can improve with symptomatic treatment without hemodialysis.

In this study, we had investigated the benthic deep-sea fauna using the dredge and beam trawl in the region from the continental shelf to the continental slope of the Sea of Kumano, Mie Prefecture, during the No．1722 research voyage of the training ship Seisui-Maru of Mie University. The survey was carried out at 16 stations covering a depth range of 113－1059 m. The results of the survey, 14 phyla had been confirmed. Arthropod, echinoderm, annelid and molluscan macrobenthos were collected from all of the stations. The phylum number of each station was in the range from 4 to 11. The largest number of phyla had been confi rmed at St．10D of boulders bottom（768－800 m depth）. Meiobenthos confi rmed in our sample were kinorhynchs, nematodes, tardigrades, loriciferans and small arthropods such as tanaidaceans, copepods and cumaceans. In addition to free-living species, parasitic copepods, isopods, platyhelminthes, acanthocephalans and nematodes had been found in fish, crustaceans and polychaetes.

1999年11月及び2000年6月に日本海最西部の水深43-133mの海域において6科11属13種のクモヒトデが採集された。この中で5種、Ophiophrixus acanthius、Ophiocentrus koehleri、Amphiura (A.) teptobrachia、Amphiophiura pomphophora、Ophiomusium scatrareが日本海初記録であった。日本海全域からこれまでに採集されたクモヒトデ類の動物地理についても論じた。, Thirteen species of ophiuraids belonging to 6 families and 11 genera were collected at depths of 43-183 m in the westernmost part of the Sea of Japan in November 1999 and July 2000. The following 5 species, were the first record from the sea: Ophioplirixus acanthius H. L. CLARK, 1911, Ophiocentrus koehleri GISLÉN, 1926, Amphiura (A.) leptabrachia MuRAKAMI, 1942, Amphiophiura pomphophora (H. L. CLARK, 1911), and Ophiomusium scalare LYMAN, 1878. The zoogeography of ophiuroids occurring in the Sea of Japan is also discussed.

この論文は国立情報学研究所の電子図書館事業により電子化されました。

この論文は国立情報学研究所の電子図書館事業により電子化されました。