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At least 541 records · Page 30Linked to original sources
PubMed1994

[Role of sun exposure on benign melanocytic nevi. A first study in populations controlled for age, sex and phenotype].

BACKGROUND: These studies were designed to assess the influence of sun exposure on nevi in white people. In order to eliminate the confounding effect of age, sex and phenotype, two parallel studies were conducted in people of the same age (17 to 24 years), sex (males) and phenotype: one in people with "red" phenotype and one in people with "dark" phenotype. RESULTS: In both groups, comparison of nevus counts on the inner and outer side of the upper extremities and comparison of mean density of nevi (number per square meter) in always-exposed and never-exposed skin show that number of nevi is higher in sun exposed areas. In both groups the density of large and atypical nevi was maximal on intermittently sun-exposed skin while the density of small nevi was maximal on always-exposed skin. The number of large nevi on intermittently-exposed skin correlated with cumulative intensive exposure during beach recreation in the red phenotype group. The number of large nevi was significantly higher in red phenotypes who repeatedly experienced severe sunburns in their first 20 years of life. CONCLUSIONS: The number of nevi at the end of the second decade is influenced by cumulative sun exposure from birth. "Traumatizing" sun exposure, which is more frequent in "red" phenotype than in "dark" one, has an influence on the number of large nevi and is therefore likely to make small nevi grow.

Adult↗
PubMed1993

Role of sun exposure on nevus. First study in age-sex phenotype-controlled populations.

BACKGROUND: These studies were designed to assess the influence of sun exposure on nevi in white people. To eliminate the confounding effect of age, sex, and phenotype, two parallel studies were conducted on people of the same age (17 to 24 years; median, 20 years old), sex (male), and phenotype: one in people with "red" phenotype (red or red-blond hair, white complexion on the inner part of the arm, and inability to tan) and one in people with "dark" phenotype (brown or black hair, dark complexion on the inner part of the arm, absence of freckles, and easy tanning without burning). RESULTS: In both groups, comparison of nevus counts on the inner and outer side of the upper extremities and comparison of mean density of nevi (number per square meter) in always-exposed and never-exposed skin show that the number of nevi is higher in sun-exposed areas. The density of large and atypical nevi was maximal on intermittently sun-exposed skin while the density of small nevi was maximal on always-exposed skin. The number of large nevi on intermittently exposed skin correlated with cumulative intensive exposure during beach recreation in the red phenotype group. The number of large nevi was significantly higher in red phenotypes who repeatedly experienced severe sunburns in their first 20 years of life. CONCLUSIONS: The number of nevi at the end of the second decade is influenced by cumulative sun exposure from birth. "Traumatizing" sun exposure, which is more frequent in the red phenotype than in the dark phenotype, has an influence on the number of large nevi and is therefore likely to make small nevi grow.

Adolescent↗
PubMed1997

[Sexual activity, cardiotocographic findings and time of delivery in physiologic pregnancy. Survey of a population controlled by ambulatory cardiotocography].

STUDY DESIGN: Out of 720 patients with physiological pregnancy coming weekly to the cardiotocography service, it was decided to verify if, in comparison with controls, sexual activity after the 37th week, might make some differences as regard to duration of pregnancy, incidence of PROM and cesarean section. RESULTS: Only a small minority was sexually active. From statistical tests it was observed that sexual intercourse coincided with a greater parity, a lower maternal age, a greater number of nonstress test with uterine contractions and an average duration of pregnancy, slightly lower than in controls (38.80 vs 39.76 weeks). Most of the pregnancies over the 40th week and the greatest incidence of cesarean sections due to fetal distress were observed in sexually inactive patients. A sexual activity after the 37th week did not indicate a greater incidence of PROM CONCLUSIONS: According to personal opinion and provided there is not an obstetric pathology, there are advantages and not disadvantages from a less prohibitionist habit concerning sex by the end of the period of pregnancy.

Adolescent↗
PubMed1993

The perioperative morbidity of scheduled cesarean hysterectomy.

OBJECTIVE: To compare the outcomes of patients undergoing scheduled cesarean hysterectomy with those of women treated with cesarean delivery and subsequent hysterectomy. METHODS: Through a retrospective review of 43 patients, we investigated the morbidity associated with scheduled cesarean hysterectomy and compared these findings with the combined morbidity of scheduled cesarean delivery and subsequent abdominal hysterectomy in a control population. Controls were included only if the subsequent hysterectomy was performed within 3 years of the index cesarean delivery. Each study subject was assigned two controls matched for age, parity, number of previous cesarean deliveries, and indications for procedures. The incidence of the following major morbidity events was compared between the groups: transfusion, urinary tract injury, fistula formation, cellulitis or endometritis, postoperative abscess or hematoma formation, ileus, pneumonia, and wound complications requiring prolonged therapy (seroma, hematoma, infection). RESULTS: The number of women receiving transfusions after scheduled cesarean hysterectomy was greater than among controls (39.5 versus 15.1%; P < .05). The proportion of patients with major morbidity, exclusive of transfusion, was significantly greater in the control population (44%) than in women with scheduled cesarean hysterectomy (16%) (P < .05). The cumulative number of women with a major complication, such as transfusion or a morbid event, was 22 of 43 in the study group versus 44 of 86 in the control population, a nonsignificant difference. CONCLUSION: We found no significant difference in the cumulative perioperative complication rates in women undergoing scheduled cesarean hysterectomy compared with a population of similar patients treated with cesarean delivery and subsequent abdominal hysterectomy.

Adult↗