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Biomedical subjects

J A Bonavita

Publications and source records attributed to J A Bonavita.

11 recordsLinked to original sources
PubMed1999

Ultrasonic assistance in the diagnosis of hand flexor tendon injuries.

In contrast to routine flexor tendon injuries, flexor tendon ruptures following blunt injury or re-ruptures following repair can be difficult to diagnose. The authors investigated the efficacy of using ultrasound to assist in the diagnosis. From 1996 to 1997, 8 patients underwent evaluation of the flexor tendons using an ATL HDI-3000 ultrasound machine with a high-resolution, 5 to 9-MHz hockey stick linear probe. Dynamic evaluation was performed in real time, simulating clinical symptoms. Six patients underwent surgical exploration. Sonographic diagnosis and intraoperative findings were correlated. Ultrasound was used to diagnose 3 patients with ruptured flexor digitorum profundus tendons. Mechanisms of injury included forceful extension, penetrating injury, and delayed rupture 3 weeks after tendon repair. Subsequent surgical exploration confirmed the ruptures and location of the stumps. Five patients had intact flexor tendons by ultrasound after forceful extension, penetrating injury, phalangeal fracture, crush injury, and unknown etiology. In 3 patients who underwent surgery for tenolysis, scar release, or arthrodesis, the flexor tendons were found to be intact, as predicted by ultrasound. The authors found ultrasound to be accurate in diagnosing the integrity of flexor tendons and in localizing the ruptured ends. They conclude that ultrasound is helpful in evaluating equivocal flexor tendon injuries.

Adult↗
PubMed1989

Acquired immunodeficiency syndrome and mycotic abdominal aortic aneurysms: a new challenge? Report of a case.

The case of a 64-year-old white man with acquired immunodeficiency syndrome and ruptured abdominal aortic aneurysm infected with Salmonella is presented. Five points related to this case are addressed. It is feared that the vascular surgeon may face patients with acquired immunodeficiency syndrome and abdominal aortic aneurysms infected with Salmonella with increasing frequency in the future. This case raises medical, ethical, and moral questions.

Acquired Immunodeficiency Syndrome↗
PubMed1980

Shoulder erosions in renal osteodystrophy.

The radiographic manifestations of renal osteodystrophy may be articular as well as osseous. The latter are well recognized, i.e., subperiosteal and subchondral bony resorption. Recently attention has been directed to the occurrence of an erosive arthritis of the hands and wrists in hyperparathyroidism. The authors present six patients with humeral head erosions, all of whom were on chronic long-term hemodialysis. These intra-articular erosions occurred at the "bare" area of the humeral head and thus represent an erosive arthritis and therefore can be distinguished from the usual sites of subchondral and subperiosteal bony resorption seen in hyperparathyroidism.

Adolescent↗
PubMed1980

Hydroxyapatite deposition disease.

Hydroxyapatite crystals are a common cause of periarticular disease, but recent studies have shown that they may also be deposited intra-articularly, either as a primary phenomenon or secondary to another disease. A continuum of abnormalities from monoarticular periarthritis to polyarticular disease and finally joint destruction may occur.

Adult↗
PubMed1979

An analysis of pancreatic sonography in suspected pancreatic disease.

To assess the value of pancreatic sonography in patients suspected of having pancreatic disease, our first 500 pancreatic examinations using gray scale imaging were reviewed in a prospective manner without clinical information. Various parameters of each examination were recorded. The pancreas was localized by its relationships to surrounding vessels and the duodenum. The ability to define the head, body, and tail of the pancreas as well as anterior--posterior size measurements were noted and recorded. A retrospective clinical pathologic follow-up was then carried out and correlated with the ultrasonic findings. Four categories of patients were identified. The features seen in pancreatic ultrasonography of the entire group, as well as those seen in the individual categories, were analyzed. This analysis indicates that pancreatic sonography can be used in patients suspected of having pancreatic disease, defining both normal and abnormal pancreas. A high index of suspicion for the type of abnormality present can be achieved.

Follow-Up Studies↗
PubMed1979

The sonographic appearance of acute pyelonephritis.

Acute pyelonephritis and acute ureteral obstruction often present with similar clinical and urographic findings. Ultrasound, however, can easily detect the presence of obstruction as well as demonstrate characteristic findings suggestive of acute pyelonephritis, and thus allows differentiation. In two patients with acute pyelonephritis, the ultrasonic findings consisted of a large swollen kidney with an increased anechoic corticomedullary area, with multiple scattered low-level echoes. Each of the two cases is discussed in detail.

Acute Kidney Injury↗