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Biomedical subjects

M Francucci

Publications and source records attributed to M Francucci.

17 recordsLinked to original sources
PubMed2004

Analysis of high- n dielectronic Rydberg satellites in the spectra of Na -like Zn XX and Mg -like Zn XIX.

We have observed spectra from highly charged zinc ions in a variety of laser-produced plasmas. Spectral features that are Na - and Mg -like satellites to high- n Rydberg transitions in the Ne -like Zn XXI spectrum are analyzed and modeled. Identifications and analysis are made by comparison with highly accurate atomic structure calculations and steady state collisional-radiative models. Each observed Zn XX and Zn XIX feature comprises up to approximately 2 dozen individual transitions, these transitions are excited principally by dielectronic recombination through autoionizing levels in Na - and Mg -like Zn19+ and Zn18+. We find these satellites to be ubiquitous in laser-produced plasmas formed by lasers with pulse lengths that span four orders of magnitude, from 1 ps to approximately 10 ns. The diagnostic potential of these Rydberg satellite lines is demonstrated.

Journal Article↗
PubMed1993

[Acute cholecystitis in videolaparoscopy].

The authors describe their experience in 15 cases of acute cholecystitis treated with laparoscopic cholecystectomy in emergency. Only in one patient, affected with an abscess of the upper right abdominal space, a laparotomy was performed. The results were excellent. The 14 patients treated with laparoscopic cholecystectomy were quickly discharged from the hospital (on an average 4 days after the surgical treatment) and the convalescence period was very short (range 10-15 days). In the patient treated with laparotomic cholecystectomy the postoperatory period was regular.

Acute Disease↗
PubMed1986

[24-hour pH measurement and Holter ECG monitoring in studying patients with angina-like chest pain. Our experience].

Preliminary experience with the combined use of 24 pH-metering and Holter ECG monitoring in the differential diagnosis of angina-like-pain (ALP) is reported. Twenty patients aged 24-65 (15 females and 5 males) all with angina-like-pain were studied. The aim of the study was to differentiate between oesophageal and cardiac causes of the various types of chest pain and to investigate the possibility of their coexistence. 50% of the ALP patients with a negative non-invasive cardiological report presented a pathological gastroesophageal reflux. In 5% of the cases simultaneous coronary insufficiency and pathological gastro-oesophageal reflux was noted. The importance of performing both Holter recordings and pH-metering before subjecting patients to coronarography is therefore emphasised.

Adult↗
PubMed1983

[Clinical value of hemorrheology in peripheral arterial occlusive diseases].

The authors report their study on the red blood cell deformability of 30 patients with isolated and combined obstructive lesions in both aorto-iliac and femoral trunk, performed before and after the exercise test. Such a test does not significantly change the deformability in normal patients while, on the contrary, the exercise test significantly changes the deformability in patients affected by atherosclerotic disease. Furthermore, in the experience of the authors the decrease of the deformability is directly related to the degree of the circulatory impairment.

Adult↗
PubMed1983

[Erythrocyte filterability and treatment with pentoxifylline].

The purpose of our study was to verify the possibility of obtaining a reduction in the erythrocyte filtration rate and an improvement in the O2 tissue uptake in twenty patients suffering from insulin-dependent diabetes mellitus and diabetic angiopathy, randomly divided in two groups receiving pentoxifylline (1,200 mg/day for 30 days) or a placebo solution, respectively. The erythrocyte filtration rate decreased in patients treated with pentoxifylline and the difference of erythrocyte filtration rate between the two groups was statistically significant.

Diabetes Mellitus, Type 1↗
PubMed1983

[Erythrocyte filterability in Raynaud's disease].

Hemorheological changes were more recently believed to be responsible for the pathogenesis of the Raynaud's phenomenon. In order to verify such changes, the authors report the data on red blood cell deformability obtained from a study performed in 8 patients with cold-induced Raynaud's phenomenon. From the evaluation of these data it seems likely that hemorheological changes observed during the phenomenon are the consequence of the ischemia and not vice versa.

Adolescent↗
PubMedDate not supplied

Diagnosis of thyroid metastasis of colonic adenocarcinoma by fine needle aspiration biopsy.

A case of thyroid metastasis from colonic adenocarcinoma was diagnosed by fine needle aspiration (FNA) biopsy. The FNA specimen from the thyroid nodule contained tall columnar cells consistent with the intestinal primary. Staining of the tumor cells for thyroglobulin was negative. Histologic examination of the excised nodule, which was removed due to its rapid growth and risk of skin ulceration, confirmed the FNA diagnosis. FNA biopsy in such cases should be able to distinguish between a second primary neoplasm, which would be removed, and a metastasis, which would usually not be surgically treated.

Adenocarcinoma↗
PubMedDate not supplied

[Evaluation of the Doppler-pulse volume recorder in Raynaud's phenomenon].

A study was made of 15 patients (10 female and 5 male), between the age of 18 and 65 years, in order to assess the diagnostic efficacy of the combined Doppler-P.V.R. (Pulse Volume Recorder) technique when examining Raynaud's phenomenon. The patients in the study had suffered for at least a year from recurrent episodes of Raynaud's phenomenon and were compared with 15 normal non-smokers. The patients were given a Doppler and plethysmograph exam with P.V.R. in basal conditions and following heat stimulus. It can be said that while the Doppler exam supplies data that is compatible with the variations in peripheral resistance encountered in Raynaud's phenomenon, P.V.R., although able to give useful information on the general condition of the segment examined, does not yet provide exact data on account of the difficulty in interpreting the graph obtained. Interpreting P.V.R. data can be facilitated by combining P.V.R. with heat test.

Adolescent↗
PubMedDate not supplied

[Doppler diagnosis in the localization of incompetent perforating veins].

If persistent or recurring varicosis is to be avoided, it is vital to locate the incontinent perforating veins in patients with venous insufficiency of the lower extremities. This is the case wherever surgery, sclerotherapy or the use of elastic support is required and especially in the absence of the normal signs of diseased deep veins, such as stasis, dermatitis or ulcerations. The inadequacy of clinical examination or certain instrumental techniques in evidencing the largest possible number of incontinent perforating veins is demonstrated. Personal experience of Doppler testing at a Phlebology Clinic is then presented and it is pointed out that the accuracy of this technique depends essentially on the examiner's experience. Correctly performed the technique gives over 90% accuracy in the preoperative diagnosis of incontinent perforating veins.

Humans↗