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Biomedical subjects

C J Tegtmeyer

Publications and source records attributed to C J Tegtmeyer.

At least 55 records · Page 3Linked to original sources
PubMed1984

Renal angioplasty: current status.

Percutaneous transluminal angioplasty has attracted a great deal of attention in recent years and is being used with increasing frequency for the treatment of renovascular hypertension from renal artery stenosis. One hundred forty dilatation procedures have been performed in 90 patients with 119 renal artery stenoses. Ten of the patients were treated for renal insufficiency alone. An initial success rate of 95% was achieved. The blood pressure response has been followed for 1-52 months (mean, 22 months). The mean diastolic pressure decreased by 36.7 mm Hg in response to the treatment. Of the 80 hypertensive patients, 25 were classified as cured, 47 as improved, and eight as nonresponders. Patient selection, the proper balloon size, and a good initial response are the major factors in determining long-term success. Percutaneous transluminal angioplasty is technically feasible and clinically effective for the treatment of renovascular hypertension.

Adult↗
PubMed1983

Effects of percutaneous transluminal angioplasty on renal plasma flow.

Percutaneous transluminal angioplasty is being used with increasing frequency for the treatment of renal artery stenosis. Several noninvasive techniques that utilize radioactive tracers have been used for monitoring the effects of angioplasty and progression of disease. Forty-one patients were studied before and after renal angioplasty by using renograms and fractionated measurements of effect renal plasma flow. Although there were striking examples of improvement in effective renal plasma flow following angioplasty, this was not a consistent finding. There was a tendency for effective renal plasma flow to revert to the baseline level on follow-up studies. Cure of hypertension was more likely in patients without renal insufficiency and in patients with shorter periods of sustained hypertension. Fractionated effective renal plasma flow studies did not reliably differentiate patients who were cured from those who were improved nor were we able to delineate clearly those requiring repeat dilatation. Nevertheless, this technique is useful for noninvasively measuring fractionated renal function in the immediate postoperative or postdilatation recovery period and for detecting the difference between occlusion of the renal artery and transient renal insufficiency due to contrast material. Also, long-term measurement of fractionated function has value in following potential progression of the basic disease process.

Adult↗
PubMed1983

The radiology of cardiac pacemakers.

Electronic control of the heart rate and rhythm has proven useful in a variety of patients. However, pacemaker technology provides a new source of complications for the patient. Though such complications are primarily the responsibility of the cardiologist and the thoracic surgeon, the radiologist can be helpful in diagnosing a number of complications associated with these devices. Plain film radiology, fluoroscopy, and ultrasound are valuable resources in the management of patients with cardiac pacemakers.

Cardiac Pacing, Artificial↗
PubMed1982

Percutaneous transluminal angioplasty: the treatment of choice for renovascular hypertension due to fibromuscular dysplasia.

Twenty-three renal artery stenoses in 21 hypertensive patients, caused by fibromuscular dysplasia, were treated with percutaneous transluminal angioplasty (PTA). Follow-up over a period of 1 to 30 months, including angiography, renal vein renin assay, and radionuclide flow studies, was performed in 8 patients, each with one stenosis. Dilatation was initially successful in all cases and was successfully repeated in 1 case. The mean systolic pressure decreased by 61.81 mm Hg and the mean diastolic pressure by 36.28 mm Hg in response to treatment. Thirteen patients were cured, 8 were felt to have better control of blood pressure on medication, and there was no failures. This study demonstrates that PTA is a clinically effective method of treating renovascular hypertension due to fibromuscular dysplasia.

Adult↗
PubMed1982

Chronic traumatic thoracic aneurysm. Influence of operative treatment on natural history: an analysis of reported cases, 1950-1980.

A total of 401 cases of chronic traumatic aneurysm reported during the past 30 years plus 12 cases from the University of Virginia Medical Center were analyzed. Forty-two percent of the patients developed signs or symptoms of aneurysm expansion within 5 years of injury: 85% within 20 years. Pain was the most frequently occurring sign or symptom, followed by serial enlargement on chest roentgenogram. Of the 60 patients who were followed without operative intervention, 20 died of their aortic lesions. For these patients, the combined risk of dying or developing signs or symptoms was 41% at 5 years. Over 300 patients underwent operative repair of the aneurysm. Operative mortality was 4.6%. Bleeding was the major cause of death as well as the most common major complication. When the survival probability of patients treated operatively was compared with that of patients treated nonoperatively, the operative group demonstrated a significantly higher survival probability.

Adolescent↗
PubMed1981

Transcatheter embolic control of iatrogenic hematobilia.

For the patient with hematobilia, a serious complication of liver injury, angiography is the definitive diagnostic procedure. In addition to localizing precisely the source of the hemorrhage, angiography also provides an effective alternative to surgery for the control of hemorrhage. In two cases of iatrogenic hematobilia discussed, the bleeding sites were identified by angiography, and the bleeding was controlled by transcatheter embolization.

Adult↗
PubMed1981

Percutaneous transrenal placement of indwelling ureteral catheters.

Indwelling ureteral catheters can be used for long-term drainage of the upper urinary tract in the management of distal ureteral obstruction. Ureteral catheters cannot always be passed cystoscopically in a retrograde manner. However, it may be possible to place an indwelling ureteral catheter through a percutaneous nephrostomy in an antegrade fashion. This technique and exemplary patients are discussed.

Aged↗
PubMed1981

Cardiac pacemaker failure: a complication of trauma.

Trauma to the patient with an implanted cardiac pacemaker can result in serious damage to the device. We have described a case in which the lead was fractured after accidental electric shock. Recognition that trauma is a possible cause of pacemaker malfunction is critical to proper evaluation and prompt treatment of this potentially lethal complication.

Aged↗
PubMed1981

Ventilation-perfusion imaging and pulmonary angiography: changing pattern of use.

The hospitals and departmental records of the University of Virginia Medical Center from 1976 to 1980 show an increasing frequency of ventilation studies relative to perfusion studies and a decrease in frequency of ventilation-perfusion diagnosis of pulmonary embolus. Pulmonary angiograms have increased from one per 68 nuclear studies to one per 14. A review of 70 patients with correlating angiography or autopsy shows that 89% of nuclear studies were accurate. We have revised our interpretation criteria and indications for pulmonary angiography.

Angiography↗
PubMed1981

Percutaneous transluminal angioplasty in patients with renal artery stenosis: follow-up studies.

Fifty renal artery stenoses in 38 hypertensive patients were treated with percutaneous transluminal angioplasty. Follow-up over a period of 1 to 24 months (mean, 9 mo.), including angiography, renal vein renin determinations, and radionuclide flow studies, were performed in 24 patients (32 stenoses). The initial dilatation was successful in 90% of stenoses and redilatation was necessary in 22% with a success rate of 84%. The mean systolic pressure decreased by 65.83 mm Hg and the mean diastolic pressure by 35.88 mm Hg in response to the treatment. Sixteen patients were cured, 18 were felt to have better control of blood pressure on medication, and 4 were not helped. Percutaneous transluminal angioplasty appears to be a technically feasible and clinically effective method of treating renovascular hypertension.

Adolescent↗