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1.
Psychiatriki ; 24(2): 109-16, 2013.
Article in Greek | MEDLINE | ID: mdl-24200541

ABSTRACT

Chronic Obstructive Pulmonary Disease (COPD) is mainly related to smoking habit and is characterized by airflow limitation that is not fully reversible. The airflow limitation is usually both progressive and associated with an abnormal inflammatory response of the lungs to noxious particles or gases. Worldwide and in Greece, COPD constitutes a major epidemiological issue. Incidence of depression and anxiety is high in the COPD population. Most studies on depression and anxiety in COPD deal with factors that are positively correlated with both of these comorbidities. The aim of our study was to assess whether two variables, sense of coherence (SOC) and perception of family support (FS), are negatively correlated with depressive and anxiety symptoms in outpatients with COPD. According to Aaron Antonovsky, sense of coherence refers to the ability of individuals to make sense of and manage events. Studies in other diseases suggest that sense of family support has a significant impact on the course and outcome of the disease, yet a limited number of reports across literature addresses the role of family support in COPD patients. In our present study one hundred twenty two (98 men and 24 women) outpatients with pure COPD were included. Age and years of education were recorded. Severity of COPD was assessed with spirometry before and after bronchodilation. All patients replied to self- administered questionnaires on depression (Beck Depression Inventory, BDI), anxiety (Spielberger State-Trait Anxiety Scale, STAI), family support (Family Support Scale, FSS-13) and sense of coherence (Sense of Coherence Scale, SOC). According to our results the mean BDI depression score was 11.65 (SD 7.35), mean trait anxiety score was 40.69 (SD 11.19), mean SOC score was 54.62 (SD 7.40) and mean FS score was 64.58 (SD 11.63). Women patients had higher anxiety scores and lower sense of family support compared to men. Significant negative correlations were evidenced between depression and sense of coherence as well as between anxiety and family support. Step-wise multiple linear regression analysis verified the results and quantified the aforementioned correlations. Notably, raising scores in sense of family support by one point reduces anxiety scores by 0.14 points, and increasing sense of coherence scores by one point reduces depression scores by 0.21 points. In sum, our study confirms the presence of high levels of anxiety and depressive symptoms in COPD patients, with females being in a more disadvantaged position as they tend to have higher levels of both. Sense of coherence and family support are both protective psychological factors against the risk of developing anxiety and depressive symptoms in these patients.


Subject(s)
Anxiety/psychology , Depression/psychology , Pulmonary Disease, Chronic Obstructive/psychology , Sense of Coherence/physiology , Social Support , Anxiety/etiology , Depression/etiology , Family , Humans , Psychiatric Status Rating Scales , Pulmonary Disease, Chronic Obstructive/complications , Pulmonary Disease, Chronic Obstructive/therapy
2.
Bioelectromagnetics ; 23(7): 516-21, 2002 Oct.
Article in English | MEDLINE | ID: mdl-12224055

ABSTRACT

An approach to electrical impedance tomography (EIT) data acquisition inspired by NMR-filtered back-projection imaging with fan isochromat distribution is proposed. A current projection is generated by injecting current at a certain point of the sample and simultaneously collecting the current itself at different points on the half space opposite the point of current injection. After that, the injection is shifted to another point and collected as above and so on. A very simple algebra and software support the numerical simulations. This method is expected to be more sensitive than the traditional method based on potential measurements. A preliminary low resolution experiment is presented.


Subject(s)
Algorithms , Computer Simulation , Electric Impedance , Image Enhancement/methods , Plethysmography, Impedance/methods , Electrodes , Feasibility Studies , Models, Theoretical , Phantoms, Imaging , Plethysmography, Impedance/instrumentation , Scattering, Radiation
3.
Cancer Lett ; 172(2): 133-5, 2001 Oct 30.
Article in English | MEDLINE | ID: mdl-11566487

ABSTRACT

Acetowhitening of the vulva has been related to a subclinical human papillomavirus (HPV) infection. No consense has been reached about undertaking -or not- any therapy for these acetowhite changes. We have observed from our clinical experience and in a 10 years observational follow-up, that acetowhitening of the vulva regarding high risk (16-18) and low risk (6-11) HPV groups (as assessed by PCR analysis) significantly decreased; and acetowhitening areas negative to polymerase chain reaction (PCR), significantly increased from 53% (202/382) to 85% (276/325) (P<0.001). Our findings suggest that independently from HPV type and in the absence of cofactors, there is a statistically significant spontaneous remission of these areas.


Subject(s)
DNA, Viral/analysis , Papillomaviridae/isolation & purification , Vulva/pathology , Vulva/virology , Adult , Colposcopy , Contraception , Female , Follow-Up Studies , Humans , Middle Aged , Polymerase Chain Reaction , Prognosis , Prospective Studies , Risk Factors
4.
Clin Exp Obstet Gynecol ; 28(1): 24-5, 2001.
Article in English | MEDLINE | ID: mdl-11332583

ABSTRACT

PURPOSE OF INVESTIGATION: Diagnostic-operative hysteroscopy was successful in two cases of endometrial ossification, and fertility was restored. METHODS: A 30-year-old and a 32-year-old woman presented at our Department with a history of secondary infertility, complaining of pelvic pain, dysmenorrhea and polymenorrhea which lasted for about one year before admission. Previous ultrasound studies revealed the presence of two bright hyperechogenic bands with posterior shadowing. RESULTS: In both cases diagnostic-operative hysteroscopies were performed, displaying osseous fragments which were removed with resectoscopy, mainly mechanically. CONCLUSION: Hysteroscopic resection should be the elective treatment for endometrial ossification because it allows complete removal of osseous fragments and reduces the chance of residual synechia. The mean objective of hysteroscopy in endometrial ossification is the restitution of conceivement capability.


Subject(s)
Hysteroscopy , Ossification, Heterotopic/surgery , Uterine Diseases/surgery , Adult , Endometrium/pathology , Female , Humans , Ossification, Heterotopic/diagnostic imaging , Ultrasonography , Uterine Diseases/diagnostic imaging
5.
Fetal Diagn Ther ; 16(2): 90-4, 2001.
Article in English | MEDLINE | ID: mdl-11173954

ABSTRACT

The aim of this work is to evaluate, by means of an alternative method, the fetal lung maturation by means of measurement of the electrical conductivity of the amniotic fluid correlated with the phospholipid content. In vitro measurements were made in some 100 amniotic fluid samples at different gestational stages. A considerable change was observed in the electrical conductivity of the amniotic fluid in the last period of pregnancy, which reflects the increase in phospholipid concentration, when lung maturation is reached. We hope that further investigations, on wider case histories, will enable the application in vivo of the above-mentioned methodology.


Subject(s)
Amniotic Fluid/physiology , Electric Conductivity , Fetal Organ Maturity , Lung/embryology , Amniocentesis , Amniotic Fluid/chemistry , Female , Gestational Age , Humans , Phospholipids/analysis , Pregnancy
7.
Eur J Gynaecol Oncol ; 21(4): 391-2, 2000.
Article in English | MEDLINE | ID: mdl-11055491

ABSTRACT

Lymphangiomas are uncommon benign tumors that most commonly present early in life, and are even more exceptional in adults. We present a rare case of a 14-week pregnant woman who had a large septated cystic lesion adherent to the ileum. Despite analysis by ultrasound, the correct diagnosis was established only via laparotomy and she had surgical resection of an abdominal lymphangioma.


Subject(s)
Abdominal Neoplasms/diagnosis , Lymphangioma/diagnosis , Pregnancy Complications, Neoplastic/diagnosis , Abdominal Neoplasms/pathology , Abdominal Neoplasms/surgery , Adult , Diagnosis, Differential , Female , Humans , Ileum , Lymphangioma/pathology , Lymphangioma/surgery , Pregnancy , Pregnancy Complications, Neoplastic/pathology , Pregnancy Complications, Neoplastic/surgery , Pregnancy Trimester, First
8.
Eur J Gynaecol Oncol ; 20(3): 228-30, 1999.
Article in English | MEDLINE | ID: mdl-10410894

ABSTRACT

BACKGROUND: Genital HPV infection is one of the most common sexually-transmitted diseases. The aim of the study was to evaluate the correlation between HPV-associated lesions in male partners of women affected by CIN. METHODS: 210 male partners of women affected by CIN were examined in a long-term follow-up (from 5 to 13 years). The diagnosis in females was performed by cytology, colposcopy and histology. Male partners were submitted to clinical examination, peniscopy and biopsy. RESULTS: 111/210 (53%) females had CIN I, 53/210 (25%) and 46/210 (22%) had CIN III. Subclinical lesions were associated with 18%, 28% and 24% of male partners of women with CIN I, CIN II and CIN III, respectively. Clinical lesions were observed in 7% and 10% of sexual partners of women with CIN I and CIN II, respectively. Mixed lesions affected only 3% of sexual partners of women with CIN I. CONCLUSIONS: Our data show that the transmissibility of HPV infection to the male partners of women affected by CIN was easier when there was a lower grade of CIN. In fact, male partners of women with CIN III had a lower percentage (26%) of clinical or subclinical HPV skin lesions.


Subject(s)
Papillomaviridae/isolation & purification , Papillomavirus Infections/transmission , Sexually Transmitted Diseases/transmission , Tumor Virus Infections/transmission , Uterine Cervical Dysplasia/virology , Uterine Cervical Neoplasms/virology , Female , Humans , Longitudinal Studies , Male
9.
Neuromuscul Disord ; 9(3): 190-8, 1999 May.
Article in English | MEDLINE | ID: mdl-10382915

ABSTRACT

In the majority of facioscapulohumeral muscular dystrophy (FSHD) families (about 95%) the genetic defect has been identified as a deletion of a variable number of KpnI repeats in the 4q35 region, although no specific transcripts from this locus have been isolated so far. Molecular diagnosis is based on the detection by probe p13E-11 of EcoRI small fragments, in the range 10-28 kb, that are resistant to BlnI digestion. In family studies this probe is used with other 4q35 polymorphic markers to assign the haplotype associated with the disease. So far, we performed DNA analysis in 145 FSHD families and identified the 4q35 DNA rearrangement not only in affected individuals, but also in healthy subjects at risk of transmitting the disease, such as non-penetrant gene carriers and somatic mosaics. In addition we applied prenatal tests to 19 fetuses, using DNA extracted from chorionic villi samples (CVS) at 10-11 weeks of gestation. The FSHD status, as determined by the presence of BlnI-resistant small fragments associated with the at risk haplotype, was assessed in nine fetuses; in the remaining 10 cases the disease was excluded. Our results show that molecular analysis of 4q35 rearrangements is a reliable indirect method to perform diagnostic, predictive and prenatal tests in FSHD.


Subject(s)
Chromosomes, Human, Pair 4/genetics , Gene Rearrangement , Muscular Dystrophies/genetics , DNA/genetics , Electrophoresis, Gel, Pulsed-Field , Family Health , Female , Genetic Counseling , Genotype , Humans , In Situ Hybridization, Fluorescence , Male , Muscular Dystrophies/pathology , Mutation , Pedigree , Pregnancy , Prenatal Diagnosis
10.
J Clin Microbiol ; 37(5): 1376-80, 1999 May.
Article in English | MEDLINE | ID: mdl-10203490

ABSTRACT

Vaginal isolates of Candida albicans from human immunodeficiency virus-positive (HIV+) and HIV- women with or without candidal vaginitis were examined for secretory aspartyl proteinase (Sap) production in vitro and in vivo and for the possible correlation of Sap production with pathology and antimycotic susceptibility in vitro. HIV+ women with candidal vaginitis were infected by strains of C. albicans showing significantly higher levels of Sap, a virulence enzyme, than strains isolated from HIV+, C. albicans carrier subjects and HIV- subjects with vaginitis. The greater production of Sap in vitro was paralleled by greater amounts of Sap in the vaginal fluids of infected subjects. In an estrogen-dependent, rat vaginitis model, a strain of C. albicans producing a high level of Sap that was isolated from an HIV+ woman with vaginitis was more pathogenic than a strain of C. albicans that was isolated primarily from an HIV-, Candida carrier. In the same model, pepstatin A, a strong Sap inhibitor, exerted a strong curative effect on experimental vaginitis. No correlation was found between Sap production and antimycotic susceptibility, as most of the isolates were fully susceptible to fluconazole, itraconazole, and other antimycotics, regardless of their source (subjects infected with strains producing high or low levels of Sap, subjects with vaginitis or carrier subjects, or subjects with or without HIV). Thus, high Sap production is associated with virulence of C. albicans but not with fungal resistance to fluconazole in HIV-infected subjects, and Sap is a potentially new therapeutic target in candidal vaginitis.


Subject(s)
AIDS-Related Opportunistic Infections/enzymology , Aspartic Acid Endopeptidases/biosynthesis , Candidiasis, Vulvovaginal/enzymology , AIDS-Related Opportunistic Infections/drug therapy , Animals , Candida albicans/drug effects , Candida albicans/isolation & purification , Candidiasis, Vulvovaginal/drug therapy , Female , Humans , Rats , Rats, Wistar , Vagina/enzymology
11.
Fetal Diagn Ther ; 14(2): 102-5, 1999.
Article in English | MEDLINE | ID: mdl-10085508

ABSTRACT

OBJECTIVES: To evaluate the possibility that women affected by Hodgkin's disease (HD) during their second or third trimester of pregnancy can safely carry their pregnancy to term. METHODS: From 1986 to 1997, 6 women came to our Center during the second trimester of pregnancy and were diagnosed as having HD. Three of these 6 patients were treated with chemotherapy before delivery and 3 of them were kept under observation and started treatment after delivery. RESULTS: All 6 women gave birth to a healthy female. CONCLUSIONS: The pregnancy does not worsen the course of the illness and does not compromise long-term clinical remission and recovery.


Subject(s)
Hodgkin Disease/diagnosis , Hodgkin Disease/drug therapy , Pregnancy Complications, Neoplastic/diagnosis , Pregnancy Complications, Neoplastic/drug therapy , Adult , Female , Humans , Pregnancy , Pregnancy Outcome , Pregnancy Trimester, Second , Remission Induction
12.
Ann Ist Super Sanita ; 35(2): 265-71, 1999.
Article in Italian | MEDLINE | ID: mdl-10645660

ABSTRACT

Diabetes mellitus is one of the most common maternal illnesses resulting in congenital malformations. All complications of pregnancy, either with diabetes pregestational or gestational, are directly or indirectly related to the degree of metabolic control. If it is not treated properly, diabetes in pregnancy causes major problems for both mother and fetus. The only way to reduce complications to the minimum and locate them near to those of the normal population, is to achieve a good metabolic control. Multi-disciplinary approach in which obstetricians, physicians, paediatricians are involved, combined with intensive monitoring and therapy throughout pregnancy, could achieve successful results in women with complicated diabetes. This objective is subordinate to early diagnosis for gestational diabetes and planning of pregnancy for diabetic women.


Subject(s)
Pregnancy in Diabetics , Congenital Abnormalities/etiology , Female , Fetal Macrosomia/etiology , Humans , Pregnancy/physiology , Pregnancy in Diabetics/epidemiology , Pregnancy in Diabetics/etiology , Pregnancy in Diabetics/therapy
13.
Minerva Ginecol ; 51(12): 505-8, 1999 Dec.
Article in Italian | MEDLINE | ID: mdl-10767999

ABSTRACT

Osteogenesis imperfecta is a heterogeneous group of connective tissue disorders; it is characterized by blue scleras, bone fragility and deformity secondary to recurring fractures. A case of osteogenesis imperfecta personally observed at the 21st week of gestation is presented.


Subject(s)
Fetal Diseases/diagnostic imaging , Osteogenesis Imperfecta/diagnostic imaging , Ultrasonography, Prenatal , Adult , Female , Humans , Pregnancy
14.
Eur J Gynaecol Oncol ; 19(5): 466-9, 1998.
Article in English | MEDLINE | ID: mdl-9863914

ABSTRACT

OBJECTIVE: To evaluate the immune state in patients with genital relapse HPV and intraepithelial lesions of the lower genital tract. METHOD: Forty-three patients were selected. Twenty-one were affected by recurrent HPV infection either alone or combined with intraepithelial neoplasia treated by laser surgery, and 22 had been previously-treated and clinically cured without recurrence during a follow-up from 18 to 24 months. The diagnostic protocol included colposcopy with eso- and endocervical cytology histologically confirmed by directed biopsy. Afterwards patients underwent a systemic immunogenic evaluation. RESULTS: NK cell reduction was strictly related to HPV infection associated with intraepithelial lesions; B-lymphocyte reduction was percentually greater in patients affected by HPV alone; activation of R-IL2 increased in a percentage overlapping in the two groups indicating patient reaction to the virus. CONCLUSION: Our study supports the theory that immune response directed against viral antigens is one of the most important effectors in the control of HPV infections and that HPV is the cause of a systemic rather than local lesion.


Subject(s)
Neoplasm Recurrence, Local/immunology , Neoplasms, Glandular and Epithelial/immunology , Papillomaviridae/immunology , Papillomavirus Infections/immunology , Tumor Virus Infections/immunology , Uterine Cervical Dysplasia/immunology , Adult , B-Lymphocytes/immunology , CD4-CD8 Ratio , CD8 Antigens/analysis , Female , Humans , Interleukin-2/analysis , Killer Cells, Natural/immunology , Lymphocyte Count , Neoplasm Recurrence, Local/diagnosis , Neoplasm Recurrence, Local/therapy , Neoplasms, Glandular and Epithelial/pathology , Neoplasms, Glandular and Epithelial/surgery , Papillomavirus Infections/diagnosis , Papillomavirus Infections/therapy , Prognosis , Tumor Virus Infections/diagnosis , Tumor Virus Infections/therapy , Uterine Cervical Dysplasia/pathology , Uterine Cervical Dysplasia/surgery
15.
Recenti Prog Med ; 89(11): 559-68, 1998 Nov.
Article in Italian | MEDLINE | ID: mdl-9844440

ABSTRACT

In clinical medicine it is possible to find subjects who show initial signs of hypertensive damage being normotensive at the "casual" sphygmomanometry. In order to verify whether or not these subjects are "true normotensives", it was applied the noninvasive ambulatory monitoring of blood pressure (BP). Five studies were performed: I. Normotensives with initial hypertensive retinopathy; II. normotensives with initial hypertensive cardiohypertrophy; III. Normotensives with initial hypertensive cardiohypertrophy of the transplanted heart; IV. Normotensive pregnant women with altered uterine blood flow; V. Normotensive pregnant women with intrauterine growth retardation. From all the studies, it was possible to derive that the subjects were all true normotensive. However, they were characterized by BP values on average higher than those of their controls, but below the reference limits given by WHO. Because of the relative elevation of BP, it was possible to argue that there exists a BP regimen which is potentially dangerous for the target organs, even though there is no evidence of manifest arterial hypertension. Such a hemodynamic condition causing hypertensive cardiovascular damage was defined "arterial pre-hypertension".


Subject(s)
Blood Pressure Monitoring, Ambulatory , Hypertension/complications , Hypertension/diagnosis , Blood Flow Velocity , Cardiomegaly/etiology , Circadian Rhythm , Female , Fetal Growth Retardation/etiology , Humans , Hypertension/physiopathology , Pregnancy , Pregnancy Complications, Cardiovascular/diagnosis , Retinal Diseases/etiology , Sphygmomanometers , Uterus/blood supply
16.
Anticancer Res ; 17(3C): 2259-63, 1997.
Article in English | MEDLINE | ID: mdl-9216698

ABSTRACT

Epidemiological studies have demonstrated that cervical HPV infection and precancerous lesions of the cervix are more common in HIV-seropositive patients. However little is known about the natural history of these lesions in this population. In the present study cervical smears from 36 patients, 18 HIV-seropositive women and 18 matched controls were evaluated with the aim of quantifying morphological alterations and to evaluate DNA ploidy and HPV subtypes. Cervical lesions in HIV-seropositive patients were diploid in 50% of the cases compared to 25% in controls. The only HPVs identified by ISH were types 16/18 and no significant differences were observed in the control population. In contrast, cytological evidence of HPV infection and dysplastic changes was greatly increased in smears from HIV patients compared to HIV-seronegative women. Less than 5% of the cells showed HPV associated changes in controls while 10% to 30% of the cells were affected in HIV-patients. We suggest that the Papanicolaou test should be effective for detecting cervical disease and for a close follow-up of this population. Moreover, while additional studies with larger population groups and different population bases are needed, these findings are suggestive of the possible use of morphological criteria for the identification of HIV-seropositive subjects.


Subject(s)
Cervix Uteri/cytology , HIV Seronegativity , HIV Seropositivity/pathology , Papanicolaou Test , Papillomaviridae/isolation & purification , Ploidies , Vaginal Smears , Adult , Aneuploidy , Cervix Uteri/pathology , Cervix Uteri/virology , Diploidy , Female , HIV Seropositivity/genetics , HIV Seropositivity/virology , Humans , Papillomaviridae/classification , Precancerous Conditions/epidemiology , Precancerous Conditions/pathology , Serotyping , Uterine Cervical Neoplasms/epidemiology , Uterine Cervical Neoplasms/pathology
17.
Eur J Gynaecol Oncol ; 18(1): 76-7, 1997.
Article in English | MEDLINE | ID: mdl-9061331

ABSTRACT

Bacterial Vaginosis (B.V.) is a syndrome defined microbiologically where lactobacilli-dominated flora is exchanged with an abundant complex flora dominated by strict and facultative anaerobic bacteria, constituted by gardenerella, micrococci, streptococci and staphylocci. It has been suggested that B.V. could be important in the development of cervical intracpithelial neoplasias, because the abnormal micro flora can produce careinogenic nitrosamines. The aim of this investigation was to evaluate the correlation between CIN and B.V. in 1,008 patients (median age: 28 years, range 17-60) who were divided into two groups: the first group consisted of 504 patients affected by CIN of different degrees, the second of 504 patients without CIN. All patients were submitted to colposcopy, pap-tests, cytology of the cervical canal and microcolpohysteroscopy in the case of lesions invading the cervical canal. The diagnosis of B.V. is based on four criteria: presence of clue cells, pH 4.5, positive amine test and increased vaginal discharge. X2 Pearson analysis was applied for statistical evaluation of the data. Among the 504 patients in the first group (women affected by CIN of different degrees), 180/504 (36%) women presented B.V. Among the second group (504 women without CIN), 248/504 (49%) women presented B.V. The results of our study demonstrate that there is no significant correlation between CIN and B.V. In the first group of patients affected by CIN and B.V., B.V. was present in 36% of the cases, while in the second group of patients not affected by CIN. B.V. was present in 49% of the cases (P < 0.00005).


Subject(s)
Uterine Cervical Dysplasia/etiology , Uterine Cervical Neoplasms/etiology , Vaginosis, Bacterial/complications , Adolescent , Adult , Female , Humans , Middle Aged , Risk Factors
18.
Clin Exp Obstet Gynecol ; 24(2): 58-60, 1997.
Article in English | MEDLINE | ID: mdl-9342462

ABSTRACT

Our objective was to identify those patients particularly at risk of deep vein thrombosis (DVT) before they underwent extensive gynecologic surgery and to control if, a correct diagnostic analysis and a right pre-operative prophylaxis of patients with risk of developing DVT, was enough to improve post-operative prognosis. Of 2704 patients undergoing gynaecological surgery, 74 were pre-operatively considered at risk of developing DVT. Seventy percent of the patients received pre- and postoperative heparin, while 28% of the women received only postoperative heparin. Nonetheless, seven women receiving this prophylaxis developed DVT. The final results of our study demonstrate that there is a close correlation between incidence of DVT and the presence of risk factors. This incidence can be reduced by prophylactic measures such as elastic stockings for the lower legs, early post-operatory mobilization, hematocrit and volemy control, ending with pharmacological therapy with heparin.


Subject(s)
Gynecologic Surgical Procedures/adverse effects , Heparin/therapeutic use , Thrombophlebitis/prevention & control , Fallopian Tubes/surgery , Female , Heparin/administration & dosage , Humans , Hysterectomy/adverse effects , Ovariectomy/adverse effects , Postoperative Period , Preoperative Care , Prognosis , Thrombophlebitis/etiology
19.
Clin Exp Obstet Gynecol ; 24(2): 74-5, 1997.
Article in English | MEDLINE | ID: mdl-9342466

ABSTRACT

A 27-year-old women, gravida 2, para 1 presented with massive vaginal bleeding. After two days of bleeding from the external cervical ostium, intracervical tamponade was performed but the bleeding did not stop. At laparotomy, abdominal hysterectomy with adnexa preservation was done because of malacia tissue and life-threatening hemorrhage. Pathological examination revealed an isthmic pregnancy, gravidic decidua, and chorion villi.


Subject(s)
Cervix Uteri , Hysterectomy , Pregnancy, Ectopic/surgery , Uterine Hemorrhage/etiology , Adult , Female , Humans , Pregnancy , Pregnancy, Ectopic/complications , Pregnancy, Ectopic/pathology , Uterine Hemorrhage/surgery
20.
Phys Med Biol ; 41(9): 1863-9, 1996 Sep.
Article in English | MEDLINE | ID: mdl-8884917

ABSTRACT

In this report we propose a new method for an in vitro test of the foetal lung maturity based on the measurement of the electrical conductivity of the overall amniotic fluid obtained from transabdominal amniocentesis, since this quantity can be linked to a first approximation in a very simple way to the phospholipid content. We have carried out measurements of 85 different samples of amniotic fluid as a function of gestation weeks and we have observed a pronounced change of the electrical conductivity that reflects the increase in the phospholipid concentration occurring at the end of normal pregnancies. The method could be further developed to obtain similar information on in vivo experiments by means of bioelectric impedance tomography, taking advantage of the frequency dependence of the tissue electrical impedance.


Subject(s)
Amniocentesis , Amniotic Fluid/chemistry , Amniotic Fluid/physiology , Phospholipids/analysis , Electric Conductivity , Electric Impedance , Female , Gestational Age , Humans , Pregnancy , Pregnancy Trimester, Second , Pregnancy Trimester, Third
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