Endocarditis due to Cardiobacterium hominis.

A case of subacute bacterial endocarditis was caused by Cardiobacterium hominis in a 55-year-old man who had a history of rheumatic fever. A survey of the literature showed few reports dealing with the isolation of these organisms from human sources. Microbiologically, the chief distinguishing features of C.

[Anti-arrhythmic efficacy of the amiodarone-mexiletine combination in the treatment of resistant complex ventricular arrhythmias].

The efficacy and safety of combined amiodarone and mexiletine treatment was investigated in 16 patients with chronic complex ventricular arrhythmias previously refractory to conventional antiarrhythmic agents and, in a lesser degree, to mexiletine or amiodarone. Many patients had a poor left ventricular function. Oral amiodarone was started using a loading dose of 600 mg daily for one week, 400 mg daily for one week, and a subsequent dosage of 200 mg daily five times a week.

The diisobutyryl ester of N-methyldopamine, ibopamine: evaluation of electrophysiological properties and arrhythmogenicity studies.

The electrophysiological properties of ibopamine (SB-7505), the 3,4-diisobutyryl ester N-methyldopamine, was evaluated in 8 patients with syncopes of unknown etiology or with suspected disease of the sinus node or due to I-II degree AV block. A complete electrophysiological examination, including atrial and ventricular stimulation, was performed both in baseline conditions and within 1 h after oral administration of ibopamine 200 mg in a single dose. The study showed a slight reduction in effective refractory periods in the right atrium (-4.

[Echocardiographic diagnosis of aneurysm of Valsalva's sinus with fistulization into the right atrium].

The preoperative diagnosis of an aneurysm of the posterior sinus of Valsalva with rupture into the right atrium was made by echocardiography in a 21-year-old patient. The M-mode echocardiography revealed the following findings: 1) a vibrating anomalous structure, continuous with the aortic wall, was present in the right atrium. The echo-producing mass was the wall of the aneurysm, which adhered to the septal leaflet of the tricuspid valve during early-to-mid systole and had an abrupt posterior motion in late systole.