An unusual instance of transient prosthesis breakdown in a 29-yr-old woman with two L-Kaster disk prostheses for mitro-aortic defect is reported. The ECHO and polygraphic traces observed during and after breakdown are examined. It is considered that the breakdown which occurred in one prostheis only, was attributable to a small, internal thrombosis with embolism of the right lower extremity.

Adult↗

PubMed1976

[Rapid atrial stimulation in therapy of atrial flutter].

Personal experience in 12 cases of atrial flutter treated with various types of atrial electrostimulation is reported. In 6 cases the sinusal rhythm was obtained immediately. In the remaining cases sinusal rhythm was also obtained with atrial fibrillation from a minimum of 2 minutes to a maximum of 48 hours.

Adult↗

PubMed1976

[Recording of the potential of the bundle of His through the veins of the arm].

A new technique for recording His bundle and right branch potential through the veins of the arm instead of by the femoral route is described. Recordings were carried out in 70 patients. In 10, His potential was recorded simultaneously by the femoral and brachial routes. Potentials proved to be similar as regards morphology and duration; A-V conduction time proved identical while there were slight variations in His node conduction time since the atriogram revealed varying intrinsic deflexions. It is thus possible to confirm that the recording of His potential by the brachial route offers various advantages: 1) it takes less time than the femoral route; 2) it is an excellent alternative if, for various reasons, the patient cannot be examined by the femoral route; 3) His potential can be monitored more easily because of the greater stability of the catheter and the provisional electrosimulation using the same catheter when necessary; 4) contemporaneous recording of right branch and His bundle potential is possible in association with the femoral technique with better results than those obtained using multipolar catheters; 5) it is without complications: i.e. the phlebitis, phlebothrombosis, a-v fistula, and pulmonary emboly which, however rarely, may occur when using the femoral route.

Arm↗

PubMed1976

[Evaluation of the parameters concerning the method for determination of the sinus node recovery time. Personal experience (author's transl)].

On the basis of the personal experience of 36 patients with sick sinus syndrome, the role of length, seat, frequency of atrial stimulation (AS) on the duration of correct sinus node recovery time (CSNRT) were examined. The length of AS has little importance for values over 2 minutes. In 2 cases the CSNRT were pathological only if the position had been changed from the lateral wall of the right atrium to the middle right atrium. The frequency of AS is very important for the duration of pathological and maximal CSNRT. Therefore it is better to give every patient the major range of frequencies of AS as for a correct quantitative determination of sinus dysfunction so as not to lose some falsely negative results.

Arrhythmia, Sinus↗

PubMed1974