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Biomedical subjects

A Saint-Pierre

Publications and source records attributed to A Saint-Pierre.

At least 37 records · Page 2Linked to original sources
PubMed1980

Coronary bypass in an airline pilot.

The case of a 42-year-old airline captain grounded for obstructive coronary artery disease is reviewed. The investigation showed two selective lesions on one vessel. A bypass procedure was successful. Postoperative evaluation demonstrated an above-average physical performance without any symptoms. Adequate blood flow in the coronary bed and no heart muscle damage were also shown. The criteria for return to work are discussed.

Adult↗
PubMed1979

[Anomaly of the origin of the circumflex artery. Effects on the risk of mitral and mitro-aortic valve replacement].

An anomalous circumflex coronary artery arising from the main right coronary artery is an added risk in mitro-aortic valve replacement. The infortunate history of a patient with an anomalous circumflex artery visualised on pre-operative cineangiography who underwent a double valve replacement is reported. The first 10 post-operative days were uncomplicated with no haemodynamic disturbances. Thereafter, major ventricular arrhythmiad 54th post-operative days) without signs of myocardial infarction, which were responsible for her death. On autopsy a large anomalous circumflex artery arising from the main right coronary artery was shown. In its course, posterior to the aorta, it was literally wedged between the rigid sewing rings of the two prosthetic valves. No thrombus was found within, and there were no myocardial lesions. The only apparent cause of the arrhythmias and death of the patient was the compression of this large circumflex artery.

Adult↗
PubMed1976

[Tachycardia-dependent paroxysmal block in the bundle of His. Electrophysiological demonstration].

The authors report the case of a patient who presented with angina of effort followed by transient loss of consciousness or syncope. Clinical examination yielded little information. The electrocardiogram showed signs of an old antero-septal infarct, and a slightly prolonged PR interval at 0.22 s. A recording of the activity of the bundle of His showed a double H potential, whose two components were separated by an interval of 80 ms. This interval increased progressively under the influence of atrial stimulation. At a critical frequency of 125/mn, a complete block below the bundle of His was produced; this only reverted after slowing or cessation of stimulation. The same phenomenon occurred at rates between 125/mn and 150/mn. By contrast stimulation at 170/mn was followed by a 2:1 block below the bundle of His. It is to be presumed that the complete A-V block was occasioned by latent conduction of the impulse in the injured area. If the rate was increased yet again, the level of the block became displaced to the upper limit of this area. The absence of latent conduction then allowed the abnormal fibres to recover. The present study thus demonstrates the existance of a special type of paroxysmal A-V block: a bundle block which is dependant upon tachycardia.

Aged↗
PubMed1976

[Thrombosis of the coronary sinus due to right endo-ventricular stimulation].

In a patient with a primary cardiomyopathy, anatomical investigation allowed us to find a total old organised thrombosis of the coronary sinus associated with the presence of a right ventricular stimulator of a pacemaker. A brief review of the literature reveals that cardiac thombosis is a surpising and rare complication of a residual intracavitary pacemaker, even if it is located in the coronary sinus.

Aged↗