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Biomedical subjects

L Quaranta

Publications and source records attributed to L Quaranta.

At least 37 records · Page 2Linked to original sources
PubMed1995

Power Doppler sonography enhances visualization of orbital vessels.

Our study was intended to determine whether power Doppler sonography can be considered superior to color Doppler technique in depiction of normal orbital vasculature. Ten healthy volunteers (20 eyes) were examined with a 10 MHz linear probe; each orbital vessel was recorded with both color and power Doppler methods; the images were reviewed independently by all the observers, who agreed that power Doppler clearly is superior to color Doppler technique for evaluation of the anatomy of orbital arteries and veins.

Adult↗
PubMed1995

[Perforated endometriosis of the sigmoid. Report of a case].

The term endometriosis means the presence in an ectopic site of normal functioning endometrial tissue, the ectopic endometrial tissue, as the normal uterine mucosa, undergo hormonal stimulation and follow the proliferative and functional changes along the menstrual course; this evolution, characterize the clinical story of patients affected by endometriosis. Endometriosis is considered to be one of the most common gynecologic disorders, occurring in about 10% of women in fertile age. An involvement of adjacent organs such as the pelvic colon and rectum by endometriosis is not uncommon and may cause symptoms difficult to distinguish from malignant or inflammatory disease located in the pelvic region. The purpose of the following case report is to elucidate certain diagnostic and therapeutic problems of a disease concerning both the surgeon and gynecologists. Our case concerns a 44 year old patient with two children and a negative previous clinical gynecological history; the patients reports the occurrence in the last two years of alterations of colic evacuation consisting in a period of constipation lasting 5-7 days. The patient reached us in emergency with a sub-occlusive state that has lasted for 5 days, in the last 12 hours the appearance of a violent trafictive pain referred to the lower abdomen configure the clinical picture of a acute abdomen. The patient underwent surgery and the laparotomy demonstrated the presence of a perforated tumours located at the recto-sigmoid junction. We proceed to perform an Hartman's resection and a right ovariectomy.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1994

Severe corneoconjunctival xerosis after biliopancreatic bypass for obesity (Scopinaro's operation).

PURPOSE/METHODS: A 35-year-old woman, who had undergone an uncomplicated Scopinaro-type biliopancreatic bypass for obesity nine years previously, was examined because of severe bilateral corneoconjunctival xerosis and markedly decreased vision. One month earlier she had had a bout of nonspecific enteritis. She was treated with intramuscular vitamin A. RESULTS/DISCUSSION: After one month of therapy, the ocular xerosis had cleared completely and her vision had returned to normal. This case suggests that this kind of operation can cause instability of vitamin A absorption.

Adult↗
PubMed1994

The effect of increased intraocular pressure on pulsatile ocular blood flow in low tension glaucoma.

In the present study the relationship between intraocular pressure (IOP) and pulsatile ocular blood flow (POBF) in low tension glaucoma (LTG) has been investigated. The POBF was measured using the Ocular Blood Flow system of Langham in undisturbed eyes and repeated at IOP increments of about 5 and 10 mmHg in 20 patients affected with bilateral LTG and in 25 healthy subjects matched for age, IOP, refractive error, arterial blood pressure and heart rate. The POBFs were 740.1 (SD 58.83) and 667 (SD 108) microliters/minute (microliter/min) in the control and LTG groups, respectively and statistically significantly different. The POBFs at an IOP increased by 5 mmHg were 658.1 (SD 60.2) and 457.3 (SD 74.8) microliter/min in the control and LTG groups, respectively; in the control group the mean POBF at an IOP increment of 10 mmHg was 552.1 microliters/min (SD 66.9), and in the LTG group was 317.7 microliters/min (SD 85.2). Statistical analysis of the data showed a significant difference of POBFs in the two groups either at an IOP increment of 5 or 10 mmHg (p < 0.0001). The substantial decrease of POBF with increased IOP in LTG eyes compared with normals shows an altered response of the vascular system in LTG. These findings are probably consistent with a lack of the myogenic autoregulation in reply to IOP-induced modifications of the perfusion pressure.

Analysis of Variance↗
PubMed1994

Surgical avulsion of the iris to treat selected cases of neovascular glaucoma.

Surgical avulsion of the iris was performed in 11 eyes of 11 patients affected with diabetic retinopathy, rubeosis of the iris and neovascular glaucoma that had been unsuccessfully treated otherwise. Nine eyes had extensive iris neovascularization, complicated cataract and vitreous haemorrhage, whereas the other two eyes were aphakic and had previously undergone vitrectomy, lensectomy and extensive laser photocoagulation. Prior to surgical avulsion of the iris, all eyes received topical and entheric hypotensive therapy. The intraocular pressure (IOP) ranged from 24 to 52 mmHg. Iris avulsion lowered the IOP in 9 of the 11 eyes treated (IOP range, 6-19 mmHg).

Adult↗
PubMed1994

[Hemorrhagic necrotic acute pancreatitis: analysis of our case series in the light of the most recent diagnostic and therapeutic criteria].

During the period between 1-1-1979 and 30-9-1992, 43 cases of hemorrhagic necrotic acute pancreatitis were referred to the authors' attention. Six patients were not operated, 12 underwent emergency surgery and laparotomy was postponed in 25 cases. The introduction of sophisticated diagnostic methods, such as Eco, CT, ERCP, intensive medical therapy and postoperative NPT have allowed a more rational surgical approach in terms of timing and extent to be adopted, operating on patients who are metabolically more stable. NPT is a useful tool in the latter postoperative stage. In the series of patients undergoing emergency laparotomy there was a mortality rate of 66%. The mortality rate fell to 16% in those patients in whom surgery was postponed.

Acute Disease↗
PubMed1994

[Color Doppler echography of the orbit. Its normal aspects and pathological conditions with vascular involvement].

This study was aimed at investigating the role of color-Doppler US in the assessment of orbital vasculature under normal conditions; the results were then applied to the flowmetric analysis of some vascular diseases of the orbit, i.e., retinitis pigmentosa, simple chronic glaucoma, low-tension glaucoma and carotid-cavernous fistulas. The study consisted of two phases: first, a group of 20 healthy volunteers was examined and then 39 patients were divided into 4 subgroups. The patients (18 men and 21 women, age range: 52-68 years) were further divided into 4 subgroups: 12 of them had retinitis pigmentosa, 15 simple chronic glaucoma, 8 low-tension glaucoma and 4 carotid-cavernous fistulas. Color-Doppler yielded useful pieces of information on the position of orbital vessels and flow direction, while pulsed Doppler allowed the measurement of several variables, i.e., time average velocity, protosystolic velocity, peak systolic velocity, mesodiastolic velocity, end diastolic velocity, resistive index and pulsatility index. The study of the 20 healthy volunteers yielded valuable information on the anatomy and flow patterns of some vessels, such as the ophthalmic artery, the central retinal artery, the lacrimal artery and the posterior ciliary arteries, all of them visible in 90-100% of patients; the central retinal vein, the superior ophthalmic vein and venae varicosae were demonstrated in about 10-30% of them. In the group of patients, the mean flow velocities of the examined arteries were significantly lower than those in the normal volunteers; in the patients with carotid-cavernous fistulas an ectasic superior ophthalmic vein was demonstrated, with its typical flow "arterialization" pattern. The results suggest that color-Doppler could play a mayor role in the study of ocular hemodynamics.

Aged↗
PubMed1993

Color Doppler assessment of normal ocular blood flow.

The purpose of this study was to determine the role of CDI in the assessment of normal ocular vasculature. Color and pulsed Doppler examinations were performed in 20 healthy subjects. The principal orbital vessels were detected: ophthalmic, central retinal, lacrimal, and posterior ciliary arteries and, in a small percentage, superior ophthalmic, central retinal, and vortex veins; blood flow of arterial vessels was studied by measuring TAV, St, PS, MD, ED, PI, and RI; the morphology of the spectral waveform also was investigated. Our results suggest that duplex color Doppler may be of value in ocular vasculature examination.

Blood Flow Velocity↗
PubMed1989

[Our experience in tailoring definitive terminal colostomies and in the follow-up of such patients].

Between January 1983 and July 31, 1988 at the 1st Division of General Surgery of Cuneo S. Croce Hospital, 57 patients (33 m, 24 f) were subjected to abdomino-perineal amputation for rectal A.D.K. A definitive colostomy was fashioned for all patients. Neostoma complications were encountered in 33% of cases. 91% of patients completed the rehabilitative programme and 40% saw satisfactory results as regards the regularisation of the alvus and return to social life.

Adult↗
PubMed1989

[Colorectal neoplasms in young patients].

The prognostic factors regarding colon-rectal cancers in the under-40s are examined. A personal series of 15 cases shows that the incidence of tumour recurrence is higher and the disease-free interval shorter than in patients not selected for age and that 5-year survival is much less. These results permit the hypothesis of greater aggressiveness in colorectal cancers in the young, something that justifies the severer prognosis by comparison with the elderly population.

Adult↗
PubMed1989

[Acute mesenteric infarct. I. Identification of predisposing factors and definition of the criteria of "cautious clinical monitoring" of the main groups of patients at risk].

On the basis of experience acquired through 11 cases of acute mesenteric infarction personally observed over a 10-year period (1-1-1978-31-12-1987) and on the basis of a review on the literature, the usefulness for the purposes of early diagnosis and consequent early treatment of monitoring the essential, typical biological and clinical parameters of patients at risk of acute mesenteric infarction are reported.

Acute Disease↗
PubMed1989

[Acute mesenteric infarct. II. Problems of early diagnosis].

The symptomatology and diagnostic procedure adopted in 11 cases of acute mesenteric infarction are examined. Stress is laid on the importance of early, aetiologically accurate diagnosis for the purpose of instituting profitable treatment. In order to comply with such needs it is essential to perform urgent selective arteriography and/or urgent laparoscopy which only with rare exceptions is carried out even in hospitals that should be better equipped.

Acute Disease↗
PubMed1989

[Acute mesenteric infarct. III. Therapeutic problems].

The treatment adopted in 11 cases of acute mesenteric infarction is described: 6 cases involved arterial occlusion due to embolism and 5 arterial occlusion due to thrombosis. Six explorative laparotomies, 4 intestinal resections and one embolectomy of the superior mesenteric artery were carried out. Mortality was 63%. Stress is therefore laid on the need for very early, etiopathogenetic accurate diagnosis so as to commence treatment during the phase of reversible ischaemic intestinal lesion, targeting treatment to the cause of the ischaemia. The problem of the postoperative treatment problem is then discussed with special regard to the treatment of shock, the prevention of recurrences and the short intestine syndrome.

Acute Disease↗
PubMed1989

[Importance of preoperative monitoring in a case of hypochloric and hypokalemic dehydration subsequent to upper intestinal occlusion, caused by biliary ileus].

A personally observed case of biliary ileus triggers this description of its clinical features, blood chemical and diagnostic aspects and surgical treatment. Emphasis is placed on the importance of the preoperative rehydration and restoration of the electrolyte balance in patients with upper intestinal occlusion which reduces the risk involved in subsequent surgery.

Aged↗
PubMed1989

[Heterotopic autotransplant of the spleen after splenectomy in traumatic rupture. Personal experience and scintigraphic follow-up].

Certain aspects of OPSI (Overwhelming Post-Splenectomy Infection) are examined, mainly its considerable gravity, its relatively high incidence, especially in children; its difficult prophylaxis with a report on personal experience of ectopic autotransplant of spleen tissue in two young patients after splenectomy for traumatic rupture. The technique was found to be simple and quickly performed. Scintigraphic follow-up for over 4 years after the operation showed satisfactory growth in the transplanted spleen tissue.

Adolescent↗
PubMed1989

[Anomalies in gastric stump emptying of patients who have undergone resections for duodenal ulcer previously treated with histamine H2 receptor antagonists].

The problem of obstructed emptying of the gastric stump after Billroth II operations in patients previously treated with H2 receptors is discussed. Statistical comparison using the Student's "t" test revealed a significant difference (t = 2.173) between those given and not given H2-antagonists and confirmed the existence of greater postoperative hypotonia in the gastric stumps of the former group. This clinical syndrome demands careful monitoring of the hydroelectrolytic balance and possibly the use of a double naso-gastric and nasojejunal tube as a precaution to ensure the delivery of the jejunal contents to the stomach. The gastrokinetic drugs metoclopramide and domperidone are also beneficial.

Adult↗