Atrial fibrillation and embolic complications in paced patients.

Unlabelled: Atrial fibrillation (AF) and thromboembolism are discussed to be complications of the VVI mode. We reinvestigated the spontaneous ECG and the anamnesis of 246 pacemaker patients with the indications second and third degree atrioventricular block (AV block, n = lll), sick sinus syndrome (SSS, n = 101) and other indications (n = 34), all had shown sinus rhythm at implantation. The mean implantation time was 63 +/- 45 months (203 VVI and 43 dual chamber pacemakers).

Expression of CD 21, CD 22, and the mouse erythrocyte receptor on peripheral B lymphocytes in rheumatoid arthritis.

The expression of the B cell antigens, CD 21, CD 22, and the mouse erythrocyte receptor (MER), on peripheral mononuclear cells (PMC) in 61 patients with rheumatoid arthritis (RA) and in 25 patients with various other forms of rheumatic disease was studied. Patients with RA showed significantly more peripheral B cells than control patients, whereas there was no difference between patients with RA and controls in resting B cells expressing the MER or resting and activated B cells expressing CD 21. Patients with active RA had significantly less MER positive and more CD 21 positive B cells than patients with inactive disease.

The use of endomyocardial biopsy in heart failure.

Endomyocardial biopsy in this study of 1250 biopsied patients (mean of five samples/patient) proved to be a remarkably safe technique with no lethal complications. It may help to detect the underlying cause of heart failure but is handicapped by sampling error in focal disease processes (such as myocarditis and sarcoid heart disease) when conventional light and electron microscopy are used. In this biopsy series 123 patients (9.