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Ruolo del Cytomegalovirus nelle malattie infiammatorie croniche dell’intestino: decorso di malattia e storia naturaleCriscuoli, Valeria <1975> 23 June 2008 (has links)
No description available.
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Analisi genomica del virus dell'epatite B nell'infezione occulta e potenziale ruolo nella carcinogenesi epaticaCassini, Romina <1972> 16 May 2008 (has links)
No description available.
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Il ruolo dei dati socio-economici nella ricerca epidemiologica; l’influenza del livello di educazione scolastica nella sopravvivenza di pazienti con diagnosi di tumore alla prostata. Uno studio condotto su una coorte di pazienti svedesiFrammartino, Brunella <1973> 18 March 2008 (has links)
No description available.
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Criteri di valutazione medico-legale della narcolessiaIngravallo, Francesca <1975> 23 April 2008 (has links)
Impairment due to narcolepsy strongly limits job performance, but there are no standard criteria to
assess disability in people with narcolepsy and a scale of disease severity is still lacking. We
explored: 1. the interobserver reliability among Italian Medical Commissions making disability and
handicap benefit decisions for people with narcolepsy, searching for correlations between the
recognized disability degree and patients’ features; 2. the willingness to report patients to the
driving licence authority; 3. possible sources of variance in judgement. Fifteen narcoleptic patients
were examined by four Medical Commissions in simulated sessions. Raw agreement and
interobserver reliability among Commissions were calculated for disability and handicap benefit
decisions and for driving licence decisions. Levels of judgement differed on percentage of disability
(p<0.001), severity of handicap (p=0.0007) and the need to inform the driving licence authority
(p=0.032). Interobserver reliability ranged from Kappa = - 0.10 to Kappa = 0.35 for disability
benefit decision and from Kappa = - 0.26 to Kappa = 0.36 for handicap benefit decision. The raw
agreement on driving licence decision ranged from 73% to 100% (Kappa not calculable).
Spearman’s correlation between percentages of disability and patients’ features showed correlations
with age, daytime naps, sleepiness, cataplexy and quality of life. This first interobserver reliability
study on social benefit decisions for narcolepsy shows the difficulty of reaching an agreement in
this field, mainly due to variance in interpretation of the assessment criteria. The minimum set of
indicators of disease severity correlating with patients’ self assessments encourages a disability
classification of narcolepsy.
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Sindrome delle apnee ostruttive nel sonno (OSAS): effetti cognitivi del trattamento con pressione continua positiva (CPAP)Bisulli, Antonietta <1973> 23 April 2008 (has links)
No description available.
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Sviluppo e implementazione di uno strumento di rilevamento dei movimenti oculari lenti nella transizione veglia-sonnoZaniboni, Anna <1971> 23 April 2008 (has links)
No description available.
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Revisione critica dei risultati e nuovi algoritmi decisionali sulla chirurgia dell'OSASPari, Milena <1966> 23 April 2008 (has links)
Obstructive sleep apnoea/hypopnoea syndrome (OSAHS) is the periodic reduction or cessation of
airflow during sleep. The syndrome is associated whit loud snoring, disrupted sleep and observed
apnoeas. Surgery aims to alleviate symptoms of daytime sleepiness, improve quality of life and
reduce the signs of sleep apnoea recordered by polysomnography.
Surgical intervention for snoring and OSAHS includes several procedures, each designed to
increase the patency of the upper airway.
Procedures addressing nasal obstruction include septoplasty, turbinectomy, and radiofrequency
ablation (RF) of the turbinates. Surgical procedures to reduce soft palate redundancy include
uvulopalatopharyngoplasty with or without tonsillectomy, uvulopalatal flap, laser-assisted
uvulopalatoplasty, and RF of the soft palate. More significant, however, particularly in cases of
severe OSA, is hypopharyngeal or retrolingual obstruction related to an enlarged tongue, or more
commonly due to maxillomandibular deficiency. Surgeries in these cases are aimed at reducing the
bulk of the tongue base or providing more space for the tongue in the oropharynx so as to limit
posterior collapse during sleep. These procedures include tongue-base suspension, genioglossal
advancement, hyoid suspension, lingualplasty, and maxillomandibular advancement.
We reviewed 269 patients undergoing to osas surgery at the ENT Department of Forlì Hospital in
the last decade.
Surgery was considered a success if the postoperative apnea/hypopnea index (AHI) was less than
20/h.
According to the results, we have developed surgical decisional algorithms with the aims to
optimize the success of these procedures by identifying proper candidates for surgery and the
most appropriate surgical techniques.
Although not without risks and not as predictable as positive airway pressure therapy, surgery
remains an important treatment option for patients with obstructive sleep apnea (OSA),
particularly for those who have failed or cannot tolerate positive airway pressure therapy.
Successful surgery depends on proper patient selection, proper procedure selection, and
experience of the surgeon.
The intended purpose of medical algorithms is to improve and standardize decisions made in the
delivery of medical care, assist in standardizing selection and application of treatment regimens,
to reduce potential introduction of errors.
Nasal Continuous Positive Airway Pressure (nCPAP) is the recommended therapy for patients with
moderate to severe OSAS. Unfortunately this treatment is not accepted by some patient, appears
to be poorly tolerated in a not neglible number of subjects, and the compliance may be critical,
especially in the long term if correctly evaluated with interview as well with CPAP smart cards
analysis. Among the alternative options in Literature, surgery is a long time honoured solution.
However until now no clear scientific evidence exists that surgery can be considered a really
effective option in OSAHS management.
We have design a randomized prospective study comparing MMA and a ventilatory device
(Autotitrating Positive Airways Pressure – APAP) in order to understand the real effectiveness of
surgery in the management of moderate to severe OSAS.
Fifty consecutive previously full informed patients suffering from severe OSAHS were enrolled and
randomised into a conservative (APAP) or surgical (MMA) arm. Demographic, biometric, PSG and
ESS profiles of the two group were statistically not significantly different. One year after surgery or
continuous APAP treatment both groups showed a remarkable improvement of mean AHI and
ESS; the degree of improvement was not statistically different. Provided the relatively small
sample of studied subjects and the relatively short time of follow up, MMA proved to be in our
adult and severe OSAHS patients group a valuable alternative therapeutical tool with a success
rate not inferior to APAP.
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Il ruolo dell'ecografia prenatale nell'infezione congenita da CitomegalovirusSimonazzi, Giuliana <1973> 09 June 2008 (has links)
OBJECTIVE: To assess the effectiveness of ultrasound in the antenatal prediction of symptomatic
congenital cytomegalovirus infection.
STUDY DESIGN: The sonograms of 650 fetuses from mothers with primary cytomegalovirus
infection were correlated to fetal/neonatal outcome. Infection status was disclosed by viral urine
isolation at birth or CMV tissue inclusions at autopsy. Classification of symptomatic disease was
based on postnatal clinical/laboratory findings or macroscopic evidence of tissue damage at
autopsy.
RESULTS: Ultrasound abnormalities were found in 51/600 (8.5%) mothers with primary infection
and in 23/154 congenitally infected fetuses (14.9%). Symptomatic congenital infection resulted in
18/23 and 68/131 cases with or without abnormal sonographic findings, respectively. Positive
predictive values of ultrasound versus symptomatic congenital infection was 35.3% relating to all
fetuses/infants from mothers with primary infection and 78.3% relating to fetuses/infants with
congenital infection.
CONCLUSION: When fetal infection status is unknown, ultrasound abnormalities only predict
symptomatic congenital infection in a third of cases.
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Longterm peripheral baroreflex and chemoreflex function after bilateral eversion carotid endarterectomyMarrocco Trischitta, Massimiliano Maria <1969> 16 April 2008 (has links)
Introduction
The “eversion” technique for carotid endarterectomy (e-CEA), that involves the
transection of the internal carotid artery at the carotid bulb and its eversion over the
atherosclerotic plaque, has been associated with an increased risk of postoperative
hypertension possibly due to a direct iatrogenic damage to the carotid sinus fibers. The
aim of this study is to assess the long-term effect of the e-CEA on arterial baroreflex
and peripheral chemoreflex function in humans.
Methods
A retrospective review was conducted on a prospectively compiled
computerized database of 3128 CEAs performed on 2617 patients at our Center between
January 2001 and March 2006. During this period, a total of 292 patients who had
bilateral carotid stenosis ≥70% at the time of the first admission underwent staged
bilateral CEAs. Of these, 93 patients had staged bilateral e-CEAs, 126 staged bilateral s-
CEAs and 73 had different procedures on each carotid.
CEAs were performed with either the eversion or the standard technique with
routine Dacron patching in all cases. The study inclusion criteria were bilateral CEA
with the same technique on both sides and an uneventful postoperative course after both
procedures. We decided to enroll patients submitted to bilateral e-CEA to eliminate the
background noise from contralateral carotid sinus fibers. Exclusion criteria were: age
>70 years, diabetes mellitus, chronic pulmonary disease, symptomatic ischemic cardiac
disease or medical therapy with b-blockers, cardiac arrhythmia, permanent neurologic
deficits or an abnormal preoperative cerebral CT scan, carotid restenosis and previous
neck or chest surgery or irradiation. Young and aged-matched healthy subjects were
also recruited as controls.
Patients were assessed by the 4 standard cardiovascular reflex tests, including
Lying-to-standing, Orthostatic hypotension, Deep breathing, and Valsalva Maneuver.
Indirect autonomic parameters were assessed with a non-invasive approach based on
spectral analysis of EKG RR interval, systolic arterial pressure, and respiration
variability, performed with an ad hoc software. From the analysis of these parameters
the software provides the estimates of spontaneous baroreflex sensitivity (BRS).
The ventilatory response to hypoxia was assessed in patients and controls by
means of classic rebreathing tests.
Results
A total of 29 patients (16 males, age 62.4±8.0 years) were enrolled. Overall, 13
patients had undergone bilateral e-CEA (44.8%) and 16 bilateral s-CEA (55.2%) with a
mean interval between the procedures of 62±56 days.
No patient showed signs or symptoms of autonomic dysfunction, including
labile hypertension, tachycardia, palpitations, headache, inappropriate diaphoresis,
pallor or flushing. The results of standard cardiovascular autonomic tests showed no
evidence of autonomic dysfunction in any of the enrolled patients.
At spectral analysis, a residual baroreflex performance was shown in both
patient groups, though reduced, as expected, compared to young controls. Notably,
baroreflex function was better maintained in e-CEA, compared to standard CEA. (BRS
at rest: young controls 19.93 ± 2.45 msec/mmHg; age-matched controls 7.75 ± 1.24;
e-CEA 13.85 ± 5.14; s-CEA 4.93 ± 1.15; ANOVA P=0.001; BRS at stand: young
controls 7.83 ± 0.66; age-matched controls 3.71 ± 0.35; e-CEA 7.04 ± 1.99; s-CEA
3.57 ± 1.20; ANOVA P=0.001).
In all subjects ventilation (VÝ E) and oximetry data fitted a linear regression model
with r values > 0.8. Oneway analysis of variance showed a significantly higher slope
both for ΔVE/ΔSaO2 in controls compared with both patient groups which were not
different from each other (-1.37 ± 0.33 compared with -0.33±0.08 and -0.29 ±0.13
l/min/%SaO2, p<0.05, Fig.). Similar results were observed for and ΔVE/ΔPetO2 (-0.20 ±
0.1 versus -0.01 ± 0.0 and -0.07 ± 0.02 l/min/mmHg, p<0.05). A regression model using
treatment, age, baseline FiCO2 and minimum SaO2 achieved showed only treatment as
a significant factor in explaining the variance in minute ventilation (R2= 25%).
Conclusions
Overall, we demonstrated that bilateral e-CEA does not imply a carotid sinus
denervation. As a result of some expected degree of iatrogenic damage, such
performance was lower than that of controls. Interestingly though, baroreflex
performance appeared better maintained in e-CEA than in s-CEA. This may be related
to the changes in the elastic properties of the carotid sinus vascular wall, as the patch is
more rigid than the endarterectomized carotid wall that remains in the e-CEA.
These data confirmed the safety of CEA irrespective of the surgical technique
and have relevant clinical implication in the assessment of the frequent hemodynamic
disturbances associated with carotid angioplasty stenting.
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PTA e stenting carotideo: valutazione morfologica ed evolutiva, a breve e medio termineMarini, Massimiliano Luigi Ivo <1966> 16 April 2008 (has links)
In un periodo di tre anni è stato svolto un lavoro mirato alla valutazione delle
complicanze correlate all’utilizzo dello stenting carotideo.
Dopo la preparazione di un protocollo con definizione di tutti i fattori di rischio sono
stati individuati i criteri di inclusione ed esclusione attraverso i quali arruolare i
pazienti.
Da Luglio 2004 a Marzo 2007 sono stati inclusi 298 pazienti e sono state valutate le
caratteristiche della placca carotidea, con particolare riferimento alla presenza di
ulcerazione e/o di stenosi serrata, la tortuosità dei vasi e il tipo di arco aortico oltre a
tutti i fattori di rischio demografici e metabolici.
E’ stato valutato quanto e se questi fattori di rischio incrementino la percentuale di
complicanze della procedura di stenting carotideo.
I pazienti arruolati sono stati suddivisi in due gruppi a seconda della morfologia della
placca: placca complicata (placca con ulcera del diametro > di 2 mm e placca con
stenosi sub occlusiva 99%) e placca non complicata.
I due gruppi sono stati comparati in termini di epidemiologia, sintomatologia
neurologica preoperatoria, tipo di arco, presenza di stenosi o ostruzione della carotide
controlaterale, tipo di stent e di protezione cerebrale utilizzati, evoluzione clinica e
risultati tecnici.
I dati sono stati valutati mediante analisi statistica di regressione logistica multipla
per evidenziare le variabili correlate con l’insuccesso.
Dei 298 pazienti consecutivi sottoposti a stenting, 77 hanno mostrato una placca
complicata (25,8%) e 221 una placca non complicata (74,2%). I due gruppi non
hanno avuto sostanziali differenze epidemiologiche o di sintomatologia preoperatoria.
Il successo tecnico si è avuto in 272 casi (91,2%) e sintomi neurologici post-operatosi
si sono verificati in 23 casi (23.3%). Tutti i sintomi sono stati temporanei.
Non si sono avute differenze statisticamente significative tra i due gruppi in relazione
alle complicanze neurologiche e ai fallimenti tecnici.
L’età avanzata è correlata ad un incremento dei fallimenti tecnici.
I risultati dello studio portano alla conclusione che la morfologia della placca non
porta ad un incremento significativo dei rischi correlati alla procedura di stenting
carotideo e che l’indicazione alla CAS può essere posta indipendentemente dalla
caratteristica della placca.
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