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Biomedical subjects

J M Stallworth

Publications and source records attributed to J M Stallworth.

At least 19 recordsLinked to original sources
PubMed1990

MR imaging of pancreas in cystic fibrosis.

The pancreatic regions of 18 patients with cystic fibrosis were analyzed with a 1.5 Tesla MR unit. Signal intensity of the pancreas was correlated with clinical data and ultrasound. A hyperintense pancreas on T1-weighted image was consistent with fatty replacement of pancreatic insufficiency. A pancreas of normal soft tissue intensity was found in two asymptomatic and one symptomatic patient. A very hypointense pancreas on any pulse sequence was considered to be an intermediate stage of pancreatic degeneration.

Adolescent↗
PubMed1985

Cystic adventitial disease of the popliteal artery.

Cystic adventitial disease of the popliteal artery has been recognized as a cause of arterial stenosis and calf claudication for 30 years. It is reported infrequently and its etiology remains unknown. In addition, a peculiar geographic distribution of the reported cases of this disorder has been noted, with a majority of cases from Europe and Australasia. The authors report here a case from South Carolina in which a fibrous band may have contributed to compression during exercise. Noninvasive studies and angiographic studies were negative before exercise and positive after exercise. Current ideas of diagnosis, surgical treatment and possible etiology are presented.

Adult↗
PubMed1984

Diagnosis and management of thoracic outlet syndrome.

During the past 15 years, using plethysmography and maneuvers originally described by other researchers, we have tested 1,140 patients who had thoracic outlet symptoms. The vascular compression was recorded noninvasively, which also reflected the pressure on accompanying nerves in the brachial bundle. If the neurologic symptoms were reproduced at this time, the diagnosis of thoracic outlet syndrome was positive. Following exercise treatment (without improvement), 194 patients underwent operative exploration. By performing costoclavicular and hyperabduction maneuvers during axillary exploration, the tissue causing compression was identified and the muscle, bone, or tendon was divided or resected. Division of soft tissues in 180 patients resulted in improvement in the conditions of 173 patients (96%). Bone resection allowed relief of symptoms in six (43%) of 14 patients.

Exercise Therapy↗
PubMed1981

Negative phleborheography: clinical follow-up in 593 patients.

Approximately 500,000 cases of pulmonary embolism appear each year in the United States, with most having clots that originated in the deep veins of the lower extremities. Since the clinical diagnosis of deep venous thrombosis (DVT) is accurate only half the time, a safe method that affords immediate and definitive diagnosis of DVT is urgently needed. One diagnostic technique now available is phleborheography (PRG). We examined 1,076 patients (2,152 limbs) during the period of 1976 to 1979. By performing PRG before hospital admission, 392 patients who had negative study results were not hospitalized, resulting in an estimated savings of +960,400 and avoiding both the hazardous treatment and the stigma associated with a diagnosis of DVT. After one to three years of follow-up in 593 patients (1,186 limbs) who had had negative results from PRG, only three (0.5%) have shown evidence of postphlebitic swelling and one (0.2%) has had pulmonary embolus.

Extremities↗
PubMed1981

A noninvasive method to assess sympathetic activity.

Reflex adjustments of the blood flow through the skin are mediated largely by the sympathetic nervous system and play a fundamental role in the regulation of body temperature. Since blood flow in the digits is almost entirely through skin vessels, surface temperature measurements and digital plethysmography are useful methods of studying the changes in digital blood flow. Sweating is also primarily controlled by the sympathetic system and can be monitored by measuring the electrical resistance of the skin. A noninvasive test to assess sympathetic activity is described comparing the findings in normal subjects and patients with arterial diseases, vasospasm, and diabetes. Digital arteries obstructed by diseases or clot can be delineated from obstruction due to vasospasm, and diabetic neuropathy can be objectively identified. Follow-up studies in more than 1200 patients have demonstrated that an accurate prediction of the outcome of sympathectomy or nonoperative treatment can be made after assessing the results of this safe and inexpensive noninvasive test.

Arterial Occlusive Diseases↗
PubMed1979

A simplified and efficient method for treating varicose veins.

Stripping the saphenous vein and manual excision of varicose veins has been the popular operative treatment for many years. During this 2- to 4-hour procedure, the patient must be rotated from the supine to the prone position in order to excise the collateral veins. These maneuvers are time-consuming and result in contamination, dozens of unsightly scars, and incomplete destruction of many of the small tortuous varicosities. In 705 patients we have substituted limited excision when possible and high-frequency cautery methods to destroy the venous tributaries. Cauterization, accomplished by introducing a probe subcutaneously through a 2 mm skin incision which requires no sutures for closure, affords excellent treatment for the troublesome smaller tortuous veins. The recurrence rate depends on the primary cause of the varicosities and is roughly the same in both types of operative procedures. The advantages of the latter procedure are shorter operating and anesthesia times, minimal infection rate, substantially less hospital time and cost, and essentially no cosmetic defects.

Arteriovenous Fistula↗
PubMed1977

Is rib resection necessary for relief of thoracic outlet syndrome?

Between 1966 and 1975, 425 patients with thoracic outlet symptoms were studied: 146 operative procedures were carried out in 103 of these patients. Division of soft tissues, only, in 129 cases offered relief of symptoms. In 10 cases bone resections (four cervical ribs, one second rib, one clavicle, and four first ribs) were done in an attempt to relieve the outlet problems. Preoperative evaluation included neurological consultation, x-rays of the neck and chest, detailed non-invasive oscillographic recordings of arterial flow during various outlet maneuvers, angiograms and in many instances electromyograms and nerve conduction studies. The axillary surgical approach to be various compression areas was preferred in that hyperabduction of the arm and costoclavicular maneuvers could be carried out under direct observation of the involved vessels. Accurate appraisal of the compression point could be assessed before and after the involved structure was divided or removed. Complications were limited to two hematomas postoperatively, and transient paralysis of the diaphragm in one patient. In all patients the vessel compression was relieved at the time of operation. In no instance was the first rib emperically removed as a "cure all" procedure. Six months following operation, patients were reevaluated and all except 8 patients (11 operative procedures) had relief of symptoms for a success rate of 92.5%.

Axillary Artery↗