Laura Colonna

Prevalence of and risk factors for fungal vaginitis caused by non-albicans species

OBJECTIVE Our purpose was to evaluate the prevalence of symptomatic yeast vaginitis caused by non-albicans species among patients attending a vaginitis clinic over an 8-year period. STUDY DESIGN A retrospective study of 1263 patients with symptomatic yeast vaginitis confirmed by culture techniques was performed. RESULTS The prevalence of symptomatic fungal vaginitis caused by non-albicans species increased from 9.9% (10/101) in 1988 to 17.2% (36/209) in 1995 (chi 2 for trend = 9.33, p = 0.002). Non-albicans species were found more frequently in known human immunodeficiency virus-seropositive patients (23/102 vs 143/1161, odds ratio 2.07, 95% confidence interval 1.2 to 3.46) than in seronegative subjects or subjects of unknown status for the virus. Recurrent vaginal candidiasis was an additional risk factor for vaginitis caused by non-albicans species (odds ratio 2.47, 95% confidence interval 1.72 to 3.52). The increase in non-albicans isolates during the study period was confirmed in stratified analysis and in the subgroup of self-referred patients with no history of either human immunodeficiency virus infection or recurrent vaginal candidiasis. CONCLUSION The prevalence of fungal vaginitis caused by non-albicans species has increased sharply in the setting of a vaginitis clinic. The characteristics of risk factors suggest that fungal cultures should be done routinely in human immunodeficiency virus-seropositive subjects with suspected vaginal candidiasis and in patients with recurrent vaginal infection.

The Effect of Work Activity in Pregnancy on the Risk of Severe Preeclampsia

Summary: The aim of this study was to evaluate the impact of type of employment and level of physical activity at work on the risk of severe preeclampsia. For this purpose, we carried out a case control study of 160 nulliparous pregnant women with severe preeclampsia and 320 normotensive nulliparous controls who received prenatal care from members of one medical staff. The type of employment and the level of physical activity sustained at work were ascertained at birth through an interview based on a standard questionnaire. The degree of physical activity at work was assessed by a 4‐level activity score based on type of work, physical intensity, posture at work, and weekly working hours. In logistic regression analysis, after adjustment for potential confounders (maternal age, time of stopping work, prepregnancy body mass index, social status of the partner, history of previous abortion, and prepregnancy smoking status), clerical workers had a significantly lower risk of severe preeclampsia than women who were unemployed at the beginning of pregnancy (OR 0.53, 95% CI 0.30, 0.96). In multivariate analysis, there was a significant linear trend relating the degree of physical activity at work, to the risk of preeclampsia (likelihood chi‐square = 9.38, 3 df, p = 0.002). We then restricted the analysis to women who had ever worked in pregnancy (n = 339) also adjusting for confounders, and found that clerical workers were still at significantly lower risk of severe preeclampsia dian women not formally employed (OR 0.2,95% CI 0.08,0.49). In addition, moderate/high physical activity at work was associated with a 2‐fold increase in the risk of severe preeclampsia compared to mild activity (OR 2.08, 95% CI 1.11,3.88). We conclude that moderate to high physical activity at work seems to increase the risk of severe preeclampsia.

Interaction between fetal gender and risk factors for fetal growth retardation.

OBJECTIVE Our purpose was to evaluate the interactions between fetal gender and recognized risk factors of fetal growth retardation. STUDY DESIGN A case-control study of 530 singleton pregnancies complicated by fetal growth retardation and 782 control pregnancies with appropriately grown fetuses was conducted. Interactions were evaluated by logistic regression analysis. RESULTS In logistic regression analysis fetal growth retardation was more frequent in female than male fetuses (odds ratio 1.39, 95% confidence interval 1.06 to 1.82). In female fetuses hypertension-related fetal growth retardation was three times more common than in males. On the other hand, a low (< 50 kg) maternal prepregnancy weight and a low (< 18) body mass index (kg/m2) were significant risk factors for fetal growth retardation in male fetuses only. Although maternal smoking in pregnancy was a significant risk factor for growth retardation in both male and female fetuses, its effect was significantly stronger in male fetuses. CONCLUSION Fetal gender can affect the magnitude of the classic risk factors for fetal growth retardation.

Frequency and significance of drug resistance in vulvovaginal candidiasis.

The rates of non-albicans species and susceptibility to the main antimycotic drugs were evaluated in a series of 472 cultures of vulvar or vaginal specimens positive for Candida species. Torulopsis glabrata was associated more frequently than C. albicans with recurrent vulvovaginal candidiasis (18/40 vs. 72/379; p = 0.003, chi 2 test). As evaluated by the results of susceptibility testing, C. albicans isolates were uniformly sensitive to the antifungals tested, whereas 7.5% (3/40) of T. glabrata strains were resistant to imidazole derivatives. All these patients had a history of repeated antimycotic treatments. Previous antimycotic therapies in susceptible individuals could cause a selection of non-albicans species, especially T. glabrata, which is occasionally resistant to the commonly used antimycotic drugs.

Factors potentiating the smoking‐related risk of fetal growth retardation

Objective To estimate the risk of fetal growth retardation resulting from the interaction between maternal smoking during pregnancy and other recognized risk factors.