Biomedical subjects

J Lindsay

Publications and source records attributed to J Lindsay.

At least 181 records · Page 10Linked to original sources

PubMed1976

Hemopericardium, anticoagulation, and an endocardial pacemaker. A case report with description of new auscultatory and radiographic signs.

A case of organizing hemopericardium and cardiac tamponade in a patient with a permanent endocardial pacemaker who was maintained on anticoagulation is presented. The hemopericardium is concluded as solely due to the anticoagulation. A new auscultatory finding attributable to an endocardial pacemaker and a helpful radiographic sign of pericardial effusion in patients with these pacemakers is described.

Cardiac Tamponade↗

PubMed1975

Conventional coronary care unit monitoring. Nondetection of transient rhythm disturbances.

Conventional electrocardiographic monitoring techniques depend on human observation of an oscilloscopic display for detection of transient rhythm disturbances such as premature ventricular contractions (PVCs). It is not surprising that such events are often missed. We have found that transient events are regularly identified only when they occur with a frequency exceeding one per minute. Rhythm disturbances such as coupled PVCs or PVCs in which R waves interrupt the preceding T wave ("R on T"), which constitute indications for antiarrhythmic therapy, may go undetected if they occur less frequently than this.

Acute Disease↗

PubMed1975

Hemoglobin S-C disease presenting as acute pneumonitis with pulmonary angiographic findings in two patients.

Acute illness characterized by fever, cough, chest pain and pulmonary infiltrates on chest film is characteristic of patients witb sickle cell anemia and with sickle-C disease. The underlying hemoglobinopathy is usually recognized in the former, but because patients with sickle-C disease as a rule have less severe anemia and fewer, less severe crises their abnormal hemoglobin may not be detected until adolescence or adulthood. Acute pulmonary illness in such patients may therefore present a diagnostic dilemma for the unwary. Two cases are presented to highlight this point. Pulmonary angiographic findings in patients with sickle cell states might add information about the pathogenesis of this disorder since vascular occlusion appears to play a major role. Pulmonary angiograms in the two patients we describe documented the presence of localized abnormalities of perfusion. In one, the presence of filling defects in medium-sized arteries suggests intravascular thromboembolism.

Acute Disease↗

PubMed1975

Midsystolic clicks originiating from tricuspid valve structures: a sequela of heroin-induced endocarditis.

In two patients who had been heroin users, loud midsystolic clicks developed during infective endocarditis involving the tricuspid valve. The sounds were loudest along the left sternal border, exhibited an increase in intensity during inspiration and were associated with right atrial gallop sounds and with murmurs of tricuspid regurgitation. This constellation of clinical events suggests that the midstystolic clicks emanated from tricuspid valve structures as a result of disordered function of the chordae tendineae. Prolapse of the tricuspid valve has recently been demonstrated angiographically to accompany similar abnormalities of mitral valve motion in certain patients with the click-murmur syndrome. The participation of the tricuspid valve in the generation of the auscultatory finding is unclear, but the cases herein reported suggest that the tricuspid valve is capable of producing these findings.

Adult↗

PubMed1974