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Biomedical subjects

W V Vieweg

Publications and source records attributed to W V Vieweg.

At least 145 records · Page 8Linked to original sources
PubMed1976

Incidence and morphology of carotid shudders in aortic valve disease.

The incidence and morphology of shudders in carotid arterial pulse tracings were examined in 73 patients with aortic valve disease documented by cardiac catheterization. Two forms of carotid shudder were recorded: coarse and fine. Shudders were present in 67 per cent of patients with aortic stenosis, 48 per cent of patients with aortic insufficiency, and 57 per cent of patients with mixed aortic stenosis and insufficiency. No significant difference existed among these three groups of patients with respect to the over-all incidence of carotid shudders or with respect to the incidence of coarse or fine shudders. In patients with aortic insufficiency, stroke volume index (Fick) and phonocardiographic systolic ejection murmur amplitude were significantly greater (p less than 0.01, p less than 0.001, respectively) in those with coarse carotid shudders compared with those manifesting fine or absent shudders. Loud, flow-related, systolic ejection murmurs of aortic insufficiency are capable of producing radial vibrations in the aortic wall which are recorded as carotid shudders. The finding of a carotid shudder in a patient with aortic valve disease does not enable the physician to distinguish between stenosis, insufficiency, or mixed stenosis and insufficiency.

Adolescent↗
PubMed1976

Rate-dependent left bundle branch block with angina pectoris and normal coronary arteriograms.

A 46-year-old man developed rate-dependent left bundle-branch block and angina pectoris with effort. Angina pectoris and left bundle-branch block could be provoked with treadmill exercise testing and right atrial pacing. Coronary arteriograms were entirely normal on two separate occasions. The syndrome of angina pectoris with normal coronary arteries can include rate-dependent left bundle-branch block.

Angina Pectoris↗
PubMed1975

A clinically useful coding system for normal coronary artery anatomy.

Cine coronary arteriograms of 121 patients with normal coronary arteriograms with and without associated valvular or myocardial disease were reviewed to describe normal coronary artery anatomy and the distribution of potentially graftable vessels. Coronary arterio grams were divided into right, mixed, and left interior emphasis systems, depending upon the blood supply to the inferior surface of the left ventricle. Whether a coronary artery at its origin was less than 50%, between 50-70% of the left anterior descending coronary artery (LAD) at its origin was described in a simple lettering and numbering code to allow easy comparison. The diameter of the LAD at its origin averaged 4.2 mm. All vessels greater than 70% of the LAD were clearly graftable. The frequency (in percent) with which that vessel was greater than 70% of the LAD in right, mixed, and left systems, respectively, was as follows: right coronary artery 100. 100. 0. LAD 100. 100. 100. intermediate artery 8.7 12.5 33.3 obtuse marginal artery 53.7 43.7 44.4 atrioventricular groove artery 0. 56.2 100. diagonal branch of the LAD 15. 6.3 11.1. This simple method of classification is recommended to provide more accurate comparison in published series and to assist the coronary arteriographer in his interpretations.

Adult↗
PubMed1975

Origin of the sinoatrial node and atrioventricular node arteries in right, mixed, and left inferior emphasis systems.

The origin of the sinoatrial node artery (SAN) and atrioventricular node artery (AVN) was determined for 118 patients with normal coronary arteriograms. The coronary arteriograms of the 118 patients were divided into right (66.1%), mixed (26.3%), and left (7.6%) inferior emphasis systems. The SAN arose from the right coronary artery in 53%, the left coronary artery in 35%, and had a dual origin in 11%. The proximal right coronary artery was the origin of the SAN in 48.7% of right, 60.5% of mixed, and 55.6% of left inferior emphasis systems. The left coronary artery was the origin of the SAN in 38.5% of right, 25.8% of mixed, and 44.4% of left inferior emphasis systems. The AVN arose from the right coronary artery in 84%, the left coronary artery in 8%, and from both in 8% of the 118 patients. The right coronary artery was the origin of the AVN in 98.7% of right, 74.2% of mixed, and 0% of left inferior emphasis systems. The left coronary artery was the origin of the AVN in 0% of right, 25.8% of mixed, and 100% of left inferior emphasis systems.

Adult↗
PubMed1975

Thymoma masquerading as congenital partial absence of the left pericardium.

Interpretation of irregularities of the left heart border on routine posterior-anterior and lateral roentgenograms may be quite challenging. Partial absence of the left pericardium provides a characteristic abnormality of the left heart border. Described is a case of a thymoma which mimicked partial absence of the left pericardium on routine roentgenography. The importance of including both partial absence of the left pericardium and thymoma in the differential diagnosis of irregularities of the left heart border is discussed.

Adult↗
PubMed1975

Saphenous vein graft from aorta to coronary vein with production of continuous murmur. A complication of coronary artery bypass surgery.

A saphenous vein graft was inadvertently placed from the aorta to the coronary vein adjacent to the proximal left anterior descending coronary artery in a 53-year-old man with symptomatic coronary artery disease. The post-operative finding of a continuous murmur led to cardiac catheterization and successful surgical correction. The postoperative finding of a continuous murmur must alert the clinician to this possible technical error.

Coronary Artery Bypass↗