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Biomedical subjects

D Arduini

Publications and source records attributed to D Arduini.

140 records · Page 8Linked to original sources
PubMedDate not supplied

Early fetal circulation in pregnancies complicated by retroplacental hematoma.

The objective of this study was to investigate the effects in early gestation of retroplacental hematomas on Doppler indices measured in different fetal vascular districts and to relate these changes, if any, to the volume of hematoma and pregnancy outcome. Thirty-eight pregnancies complicated by bleeding and ultrasonographic findings of retroplacental hematomas were considered for this study. Menstrual age ranged between 9 and 14 weeks. Blood flow velocity waveforms were measured in the umbilical artery, descending aorta, middle cerebral artery, and inferior vena cava. The pulsatility index in arterial vessels was calculated as well as the percentage reverse flow in the inferior vena cava. The values obtained were compared to previously constructed reference limits. No significant differences were found for any of the Doppler indices when the values obtained in pregnancies complicated by retroplacental hematomas were compared to the reference limits. Furthermore no significant relationships were found between the Doppler indices and either the size of hematoma or pregnancy outcome. In conclusion, retroplacental hematoma does not induce hemodynamic effects in the fetal circulation before 14 weeks, menstrual age. These data do not support the use of Doppler ultrasonography in early gestation for pregnancies complicated by bleeding and retroplacental hematomas.

Abortion, Spontaneous↗
PubMedDate not supplied

The fetal behavioural states: an ultrasonic study.

In order to accurately detect the fetal behavioural state, we simultaneously measured fetal heart rate and multiple fetal activities in 27 healthy pregnant women at 38 to 40 weeks of gestation. We ultrasonically identified gross body movements, breathing movements and micturition. Analysis of fetal heart rate allowed us to distinguish two different patterns of fetal behaviour: active and quiet phases. The frequency distribution of the analysed fetal events was significantly different in these two phases. These data suggest that a complete biophysical profile of the fetus is effective in differentiating behavioural states and may improve the predictive accuracy of fetal heart rate analysis alone.

Adult↗
PubMedDate not supplied

The development of fetal behavioural states: a longitudinal study.

In order to evaluate the development of fetal behavioural states a longitudinal study was performed on 35 healthy fetuses during the last trimester of pregnancy. Fetal heart rate (FHR), gross fetal body movements (FM), fetal eye movements (FEM), fetal breathing movements (FBM) and micturition were simultaneously studied at two-week intervals from 28 weeks gestation onwards. Well-defined fetal behavioural states were observed only after 36 weeks gestation. Between 28 and 36 weeks the quiet-activity cycle of FHR was always detected and some fetal biophysical activities seemed to become related around this cycle.

Eye Movements↗
PubMedDate not supplied

Modifications of ultradian and circadian rhythms of fetal heart rate after fetal-maternal adrenal gland suppression: a double blind study.

In order to verify whether fetal and maternal adrenal gland suppression induces effects on fetal behaviour, triamcinolone was administered to five healthy pregnant women at 35 weeks of gestation. Five patients of the same gestational age were used as control. Fetal heart rate (FHR) and fetal movements were recorded continuously over 2-h interval by means of cardiotocography. After 3 weeks (38 weeks of gestation) the recordings were repeated without drug administration. Cortisol, adrenocorticotropin hormone, 17 beta-estradiol and unconjugated estriol were measured at the same time every 2 h in maternal peripheral plasma. At 35 weeks we found a loss of circadian rhythms of the hormones investigated and modifications of ultradian and circadian patterns of FHR in the treated group with respect to the control. No differences in hormonal and biophysical parameters were found between the two groups after the end of treatment (38 weeks). These data suggest that the inhibition of fetal and maternal adrenal glands could cause modifications of FHR patterns.

Activity Cycles↗
PubMedDate not supplied

Intrauterine growth retardation and fetal cardiac function.

Intrauterine growth retardation is a pathology which is found in 3-10% of all pregnancies and it is associated with around 20-25% of all fetal intrauterine deaths and with long-term neurologic sequelae. It presents an increased risk of distress during labor and delivery and a greater risk of perinatal mortality. The causes of IUGR and the cardiac and venous Doppler in normal fetuses are analyzed, and the hemodynamic cardiac modifications in IUGR fetus are discussed. The fetal cardiac function in intrauterine growth retardation shows a redistribution of the fetal cardiac output, which tends to favor the left ventricle as the mechanism to compensate for the uteroplacental insufficiency. The Doppler velocity indices are modified as the fetal condition progressively deteriorates and they represent an important tool for the management of the complicated pregnancy.

Cardiac Output↗
PubMedDate not supplied

[Tumor markers in the early diagnosis of recurrence in gynecologic neoplasms: combined determination of CA-125, CA 15-3, CA 72.4, SCC, 90 K].

In 156 patients with gynecologic neoplasia the sieric levels of tumor markers (CA 125, CA 15-3, CA 72.4, SCC and 90 K) before the primary treatment and during the follow-up have been evaluated. In the patients with ovarian cancer elevated levels of CA 125 (80%), CA 72.4 (62%), 90 K (49%) and CA 15-3 (16.6) were found. The integrated evaluation of CA 125 and 90 K sieric levels was positive in the 86% of cases. The evaluation of CA 125 in combination with 90 K seems to facilitate the earlier detection of ovarian cancer recurrences. Elevated levels of SCC (89%) were found in the patients with cervical cancer. In the patients with endometrial or vulvar cancer the evaluation of these tumor markers was not significant.

Antigens, Neoplasm↗
PubMedDate not supplied

[Fetal growth reduction in relation to location in the uterine horn. Experimental model in the rabbit].

We studied the differences in weight of fetal body and organ growth in 35 pregnant rabbits in which intrauterine fetal growth retardation was induced with a microsurgical technique, in relation to fetal position in the uterine horn, and compared with a control group (88 rabbit). No differences was found in control group between gestational age and in relation to fetal position. There is a highly significant difference (p less than 0.001) in weight between siblings in middle and ovarian or vaginal positions in the rabbit uterine horn in intrauterine growth retardation group after the 24th day of gestation.

Animals↗