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F Possati

Publications and source records attributed to F Possati.

69 records · Page 4Linked to original sources
PubMedDate not supplied

The value of segmental pressure measurement in the assessment of peripheral vascular disease.

In 60 patients with symptomatic peripheral vascular disease a study was performed to evaluate the reliability of segmental pressure measurement in detecting and localizing vascular lesions. Five groups of limbs with different pressure patterns were identified: normals, distals disease (diabetics), aorto-iliac disease, aorto-iliac and superficial femoral disease, superficial femoral and distal disease. The comparison with angiography showed the high efficacy of this method (when combined with Doppler study of the arteries) to localize and quantify the lesions. The combination with femoral intraarterial pressure measurement allows to predict exactly the segmental pressure after segmental vascular reconstructions. It is concluded that segmental pressure measurement (with the described technique) selects patients for angiography and surgery and can predict the outcome of vascular reconstruction.

Adult↗
PubMedDate not supplied

Valve replacement with the tilting disc Sorin prosthesis in patients with narrow aortic annulus.

The Authors summarize their 5-year experience of the clinical use of the Sorin tilting disc prosthesis in 40 patients (group A) with narrow aortic annulus, compared with a control group (group B: 116 patients) where a larger Sorin prosthesis was implanted. Follow-up lasted from 1 to 60 months, with a mean of 25.6 +/- 12.3 in group A and 20.4 +/- 11.9 in group B. Early and late mortality were low: 1/40 and 2/39 (2.5 and 5.1%) in group A and 4/116 and 9/112 (3.4 and 8.0%) in group B (p = NS): only two deaths, one in each group, were prosthesis-related. Actuarial survival was comparable: 91.2% (CL: 96.3-86.1%) in group A and 78.0% (CL: 87.6-68.4%) in group B, as were probability of being event-free and alive, non-reoperated and with few or no symptoms [group A: 61.7% (CL: 72.4-51.0%) and 77.4% (CL: 85.9-68.9%) respectively; group B: 78.8% (CL: 83.4-74.2%) and 61.1% (CL: 85.9-68.9%) respectively]. The Authors conclude that the Sorin tilting disc prosthesis is a reliable valve substitute in the narrow aortic annulus; they recommend that enlargement procedures should be confined only to patients with annulus size less than 19 mm.

Actuarial Analysis↗
PubMedDate not supplied

A comparative clinical assessment of a hollow-fibre membrane oxygenator (Capiox II) and a bubble oxygenator (Harvey 1500).

Personal experience is reported on the use of a membrane oxygenator, the Capiox II, which is clinically compared with a bubble oxygenator for medium-term perfusion. The characteristics considered were the efficiency of the heat exchanger, the oxygenating capacity, traumatic effects on the blood and the direct effect on the renal and cardiopulmonary systems. The Capiox II demonstrated a better oxygenating capacity, less platelet damage, a smaller variation in the free plasma haemoglobin, a significant difference in postoperative bleeding and blood transfusion requirements, but showed no variation in renal and cardiopulmonary function. The authors suggest that the Capiox II is to be preferred for extra-corporeal circulation of medium duration, for which it combines the advantages of both bubble and membrane oxygenators, while being less complex and costly than previously marketed membrane devices.

Blood Gas Analysis↗
PubMedDate not supplied

Arterial pressure measurements correlated to symptoms and signs of peripheral arterial disease.

The systolic pressure observed in 150 patients with peripheral arterial disease has been compared to their symptoms and signs. In patients with claudication the ankle mean pressure was 58 mmHg. In patients with rest pain it was 33 mmHg and in patients with chronic ulcerations it was 20 mmHg. In these 3 groups the mean ankle-foot pressure gradient was low (2-10 mmHg) were detected at the level of the iliaco-femoral and femora-popliteal segments. In the group of diabetic patients an high gradient was observed. Patients with peripheral arterial disease can be divided in four symptomatic groups but the angiographic and physiological patterns of patients with rest pain and ischemic ulcerations are similar and they are the best candidates to reconstructive arterial surgery.

Arterial Occlusive Diseases↗
PubMedDate not supplied

Hemodynamics of critical arterial stenoses.

The mechanics and the physiological problems related to critical arterial stenosis have been investigated by mathematical, biological and clinical models in experimental and clinical conditions. The value of critical stenosis has been defined in many ways but all the previous report on this subject agree in defining critical stenosis a reduction in section of the artery that can alter the poststenotic flow and pressure. Experimentally appreciable changes in pressures and flow do not occur until the cross-sectional area of a vessel has been reduced by more than 75% and these data are comparable to clinical situations. The data of several reports on this subject are plotted and compared and the different experiences are analysed to evaluate the best criteria to define the critical value of one stenosis and the clinical utilizations.

Arterial Occlusive Diseases↗
PubMedDate not supplied

[Problems in emergency surgery. Massive pulmonary embolism. Clinical and diagnostic aspects].

In spite of the many advances in diagnosis, pulmonary embolism is still hard to identify, one problem stemming from the similarity of its clinical signs with heart and lung conditions. The present study was carried out on 17 patients affected by massive pulmonary embolism. Clinical aspects and diagnostic problems are discussed, with particular regard to the data supplied by chest X-ray, catheterism of the right cardiac cavities and angiopneumographic investigation.

Aged↗