Factors affecting prognosis in acute intestinal ischemia.

The anamnestic, clinical, laboratory, radiological and intraoperative data on 34 consecutive patients affected by acute intestinal ischemia or infarction, caused by superior mesenteric obstructive and nonocclusive pathology were collected and assessed. The aim of this study is the identification of the factors influencing the prognosis which in this disease is still really displeasing, with a mortality of over 90% in many surveys, and 73.5% in this report.

Direct and indirect evaluation of lesions obstructing the carotid bifurcation. A comparison of Doppler spectrum analysis with angiography.

The diagnostic accuracy of real-time continuous wave (c.w.) Doppler spectrum analysis and of indirect periorbital Doppler examination for detecting carotid bifurcation disease was evaluated.

Effect of splenectomy and hemisplenectomy on pneumococcal infection and bacteria clearance in the rat.

Median survival times 1 month after intraperitoneal inoculation of Streptococcus pneumoniae Felton UC 41 show that the difference between hemisplenectomized and control rats is not at all significant (chi 2 = 0.04). On the other hand, comparing splenectomized rats with hemisplenectomized and control rats taken together, there is a significant difference: 10% level (chi 2 = 2.

Late modifications of residual parenchyma after splenic resections.

The increased experience in the field of splenic resections have brought up questions about the evolution of the residual parenchyma. Weight increase and the histologic structure of the splenic remnant were studied during a year following hemisplenectomy in rats. Histological studies show that the residual spleen presents a permanent compensatory hyperplasia rather than a true regeneration.

Experimental splenic regeneration.

The results of studies which indicate that splenic resection of residual parenchyma is able to regenerate are based primarily upon the weight increase of the splenic remnant at specified times after partial resection. This study was done to determine the histologic characteristics of the residual splenic tissue at 30 and 90 days after partial splenectomy in rats. The average increase in weight of the splenic polar residual after subtotal resection was 43 per cent at 30 days and 44 per cent at 90 days, and 10 per cent at 30 days and 30 per cent at 90 days for residual half spleen after hemisplenectomy.

Value of Doppler multi-level segmental pressure index in the diagnosis and hemodynamic characterization of totally occlusive aorto-iliac-femoro-popliteal lesions.

Four-level lower limb Doppler S.P.I.

Intra-operative control of carotid thromboendoarterectomy by Doppler spectrum analysis.

The authors report their experience with intraoperative Doppler spectrum analysis of carotid flow after thromboendoarterectomy. The method seems to be useful in the early localisation of technical defects potentially responsible for postoperative stroke. In 22 patients operated on consecutively, three major abnormalities were detected, one of the internal and two of the external carotid.