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Biomedical subjects

V Verna

Publications and source records attributed to V Verna.

4 recordsLinked to original sources
PubMed1995

[Ultrasonographic study of the patellar tendon following bone-tendon-bone anterior cruciate ligament reconstruction arthroscopy].

The arthroscopic reconstruction of the anterior cruciate ligament requires the partial removal of the patellar tendon. US potentials in the assessment of residual patellar tendon after bone-tendon-bone removal were compared with those of CT and clinics. Mechanical resistance reduction of the residual tendon may be caused by removal modalities and size. This work was aimed at investigating the morphologic US patterns indicating "stability" of the operated tendon, which is mandatory for a risk-free functional recovery. Twenty patients were submitted to US of the operated tendon with contralateral comparison. In each patient tendon thickness and structure in the site of removal were studied, especially aiming at demonstrating diffuse or focal alterations of echogenicity. Middle third thickness and new tissue echostructure are fundamental US variables to define residual tendon "stability". The authors describe some US patterns of the surgical tendon to be considered as normal and not abnormal findings, provided that US be performed at least two months after surgery.

Adolescent↗
PubMed1992

[Pneumothorax in multiple trauma. Radiologic and CT study].

This study was aimed at evaluating the necessity to perform chest Computerized Tomography (CT) in multiple traumatized patients to diagnose pleuropulmonary lesions and, particularly, pneumothorax: the correct identification of this condition, although minimal, is important especially in prevision of long anesthesias and/or positive end-expiratory pressure (PEEP) therapy. This assisted respiratory technique improves arterial oxygenation but causes a barotrauma which may cause some complications; particularly, a small undetected pneumothorax can suddenly increase so as to cause pulmonary collapse with sometimes dramatic symptoms. Chest X-ray films and CT scans, performed in rapid succession on patient's admission in Emergency Ward, were compared in 21 subjects. CT is indispensable in case of severe chest parietal lesions which can mask the radiological evidence of pulmonary or pleural conditions, as it occurred in 3 of our cases. Moreover, CT resulted more reliable than chest X-rays (18 versus 10 correct diagnoses) especially in the detection of small antero-inferior pneumothorax flaps, in which direct radiological signs cannot be identified, in default of radio-geometrical assumptions. Indirect radiological signs of pneumothorax must be recognized but critically considered in order to avoid over-staging.

Adolescent↗
PubMedDate not supplied

CT evaluation pre- and post-percutaneous ablation by radiofrequency of osteoid osteoma. Preliminary experience.

PURPOSE: Evaluation of bone remanagement after treatment by thermoablation of osteoid osteoma (OO) by CT scan. MATERIAL AND METHOD: Nine cases of OO (8 in the limbs, 1 in the pelvis) following biopsy were treated by CT-guided thermoablation. Clinical results, complications, density of tissues treated by CT scan (pre-postop, 6, 12 months) are evaluated. RESULTS: Absence of complications, regression of pain over 2 weeks, resumption of sports activity in 1 month. Bone density after treatment increases but even after 1 year it is much lower than normal levels. CONCLUSIONS: Bone remodeling after thermoablation of OO requires much time, the process is still visible 12 months later by CT scan. CT scan is an adequate method, not only for diagnosis and treatment, but also for follow-up, capable of evaluating in time the changes in density of the site of the lesion, which is useful for a comparison in case of postoperative pain of doubtful origin.

Adolescent↗