תוצאת חיפוש

Embolic Splenic Infarction: A Rare Complication of Atrial Fibrillation

Doron Merims, Doron Zilberman, Liliana Lupu, Emanuel Sikuler

Depts. of Medicine B and Radiology, Soroka Medical Center and Ben-Gurion University of the Negev, Beer Sheba

Splenic infarction is a rare disorder. The typical clinical presentation is sudden pain in the left upper quadrant of the abdomen, and awareness to this possibility is the major clue for diagnosis. We describe a 49-year-old man with chronic atrial fibrillation and splenomegaly who was treated with anticoagulants. Because of hematuria, the regular dose of anticoagulant therapy was reduced. The hematuria stopped but he complained of sudden onset of pain in the left upper quadrant. Computerized tomography and isotope scan of the spleen confirmed the clinical suspicion of splenic infarction. Treatment with anticoagulants and analgesics was followed by clinical improvement.

Red Cell Na+/H+ Exchange and Role of Protein Kinase C in its Stimu-Lation in Diabetes Mellitus, Essential Hypertension and Nephropathy

Wladimir Koren, Robert Koldanov, Edna Peleg, Eva Izsak, Meir Berezin, Talma Rosenthal

Dept. of Medicine C, Hypertension Unit and Endocrinology Institute, Chaim Sheba Medical Center, Tel Hashomer

Na+/H+ exchange (NHE) was measured as maximal initial velocity of pH-dependent H+ efflux from red cells into an alkaline medium containing Na+ in patients with insulin-dependent or noninsulin-dependent diabetes, with and without hypertension and in normoglycemic, essential hypertensives and normal controls (50 subjects in each subgroup). Maximal velocities of NHE were found in microalbuminuric patients in all subgroups, and NHE correlated with the rate of microalbuminuria (r=0.61, p=0.02). Daily insulin requirements were greater in those with elevated NHE (84±8 vs 42±4 U/day). There was no correlation between NHE and levels of plasma glucose, HbA1 and plasma aldosterone and lipid profile and PRA. NHE was correlated with plasma prolactin (r=0.51, p=0.02) and PTH r=0.24, p=0.05). In uremic patients, NHE was inversively correlated with creatinine clearance (r=-0.48, p=0.03). Since calphostin C, a selective inhibitor of protein kinase C, lowered increased NHE in vitro, the protein kinase C-dependent pathway of the exchanger regulation was concluded to be responsible for NHE activation in diabetes mellitus and essential hypertension.

Quinidine-Induced Rheumatic Toxicity

D. Almoznino-Sarafian, N. Cohen, R. Zaidenstein, V. Dishi, E. Zeckler

Depts. of Medicine C, A and F, Assaf Harofeh Medical Center, Zerifin (Affiliated with the Sackler Faculty of Medicine, Tel Aviv University)

2 women with quinidine-induced lupus are presented. This condition is rare; only about 30 cases have been reported in the English literature. Both our patients had arthritis of the wrist, antinuclear antibodies with homogenous pattern and elevated ESR. Anti-double stranded DNA antibodies were present in 1 patient, and a petechial rash in the other. Complete resolution of arthritis occurred within a few days after quinidine withdrawal, but antinuclear antibodies persisted for several months.