-
Trabalhos Originais
Accuracy of Clements’ test for evaluation of fetal lung maturation in preeclamptic patients
Revista Brasileira de Ginecologia e Obstetrícia. 1998;20(5):253-260
04-12-1998
Summary
Trabalhos OriginaisAccuracy of Clements’ test for evaluation of fetal lung maturation in preeclamptic patients
Revista Brasileira de Ginecologia e Obstetrícia. 1998;20(5):253-260
04-12-1998DOI 10.1590/S0100-72031998000500004
Views81See moreObjectives: To determine sensitivity, specificity, positive and negative predictive values of the shake test (Clements) for evaluation of fetal lung maturation in preeclamptic patients. Methods: A prospective study for validation of a diagnostic method was conducted enrolling 163 preeclamptic patients (gestational age between 28-34 weeks) admitted at CAM-IMIP with indication for fetal maturity testing. Preeclampsia diagnosis and classification followed criteria of the National High Blood Pressure Working Group, 1990. Clements' test was performed in three tubes and positive, negative or intermediate results were considered for analysis (related to presence or absence of fetal lung maturity). Accuracy parameters were calculated considering actual incidence of hyaline membrane disease (positive maturity = absent disease) after birth. Hyaline membrane disease was defined by criteria of CLAP, 1978. Statistical analysis was performed using c² test (Epi-Info 6.04b) with a 5% significance level. Results: Intermediate results were considered alternately as positive or negative for analysis. When considered positive, sensitivity was 87.9% and specificity 74.5% with positive and negative predictive values of 8.9.4% and 71.4% respectively - efficiency was 84%. When intermediate results were evaluated as negative, sensitivity decreased to 62% and specificity raised to 89.4% and positive and negative predictive values were 93.5% and 51.2% respectively (efficiency = 70%). False-positive results were rare and usually related to neonatal hypoxia: only 5 (6.5%) of 77 neonates with previous positive Clements had hyaline membrane disease. Nevertheless, false negatives were frequent: almost 40% for negative/intermediate results. Conclusions: Despite its limitations, Clements' test remains a good method for investigation of fetal lung maturation in preeclamptic patients since false positive results are unusual. However sensitivity is low and results have be cautiously analyzed because of elevated rate of false negative results. A good policy is to complement fetal maturity investigation with other tests if a negative result is determined, specially in severe cases when confirmed maturity represents indication for interruption of pregnancy.
Views81
This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Summary
Trabalhos OriginaisAccuracy of Clements’ test for evaluation of fetal lung maturation in preeclamptic patients
Revista Brasileira de Ginecologia e Obstetrícia. 1998;20(5):253-260
04-12-1998DOI 10.1590/S0100-72031998000500004
Views81See moreObjectives: To determine sensitivity, specificity, positive and negative predictive values of the shake test (Clements) for evaluation of fetal lung maturation in preeclamptic patients. Methods: A prospective study for validation of a diagnostic method was conducted enrolling 163 preeclamptic patients (gestational age between 28-34 weeks) admitted at CAM-IMIP with indication for fetal maturity testing. Preeclampsia diagnosis and classification followed criteria of the National High Blood Pressure Working Group, 1990. Clements' test was performed in three tubes and positive, negative or intermediate results were considered for analysis (related to presence or absence of fetal lung maturity). Accuracy parameters were calculated considering actual incidence of hyaline membrane disease (positive maturity = absent disease) after birth. Hyaline membrane disease was defined by criteria of CLAP, 1978. Statistical analysis was performed using c² test (Epi-Info 6.04b) with a 5% significance level. Results: Intermediate results were considered alternately as positive or negative for analysis. When considered positive, sensitivity was 87.9% and specificity 74.5% with positive and negative predictive values of 8.9.4% and 71.4% respectively - efficiency was 84%. When intermediate results were evaluated as negative, sensitivity decreased to 62% and specificity raised to 89.4% and positive and negative predictive values were 93.5% and 51.2% respectively (efficiency = 70%). False-positive results were rare and usually related to neonatal hypoxia: only 5 (6.5%) of 77 neonates with previous positive Clements had hyaline membrane disease. Nevertheless, false negatives were frequent: almost 40% for negative/intermediate results. Conclusions: Despite its limitations, Clements' test remains a good method for investigation of fetal lung maturation in preeclamptic patients since false positive results are unusual. However sensitivity is low and results have be cautiously analyzed because of elevated rate of false negative results. A good policy is to complement fetal maturity investigation with other tests if a negative result is determined, specially in severe cases when confirmed maturity represents indication for interruption of pregnancy.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. -
Relatos de Casos
Recurrent HELLP syndrome: report on two cases
Revista Brasileira de Ginecologia e Obstetrícia. 1998;20(3):165-167
04-10-1998
Summary
Relatos de CasosRecurrent HELLP syndrome: report on two cases
Revista Brasileira de Ginecologia e Obstetrícia. 1998;20(3):165-167
04-10-1998DOI 10.1590/S0100-72031998000300008
Views49See moreHELLP syndrome is a severe complication of preeclampsia that increases maternal and perinatal morbidity and mortality. Two cases of recurrent HELLP syndrome are described, maternal death occurring in one of the cases. This study is a warning about the increased risk of HELLP syndrome in the next pregnancy.
Views49This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Summary
Relatos de CasosRecurrent HELLP syndrome: report on two cases
Revista Brasileira de Ginecologia e Obstetrícia. 1998;20(3):165-167
04-10-1998DOI 10.1590/S0100-72031998000300008
Views49See moreHELLP syndrome is a severe complication of preeclampsia that increases maternal and perinatal morbidity and mortality. Two cases of recurrent HELLP syndrome are described, maternal death occurring in one of the cases. This study is a warning about the increased risk of HELLP syndrome in the next pregnancy.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. -
Artigos Originais
Maternal mortality: 75 years of observations in a teaching maternity hospital
Revista Brasileira de Ginecologia e Obstetrícia. 2006;28(7):380-387
12-06-2006
Summary
Artigos OriginaisMaternal mortality: 75 years of observations in a teaching maternity hospital
Revista Brasileira de Ginecologia e Obstetrícia. 2006;28(7):380-387
12-06-2006DOI 10.1590/S0100-72032006000700002
Views46PURPOSE: to evaluate all maternal deaths that occurred between 1927 and 2001, among 164,161 patients admitted to the Maternidade Therezinha de Jesus, the obstetrical service of the "Universidade Federal de Juiz de Fora", Brazil. METHODS: a retrospective study of 144 maternal deaths that occurred in the maternity hospital in 75 years, with 131,048 live births in the same period of time, analyzing all patients's records regarding their clinical history and data from death certificates. Autopsies were not performed. Data obtained were age, parity, gestation length, complications, moment, and causes of death. The index of maternal mortality (IMM) period 100 thousand live births was utilized. For statistical analysis the chi2 test and the exponential smoothing technique were used (alpha=0.05). RESULTS: IMM decreased from 1544 in the period 1927-1941 to 314 (p<0.001) between 1942 and 1956 and from 1957 to 1971 it was reduced to 76.4 per 100 thousand live births (p<0.001). Nevertheless, since 1972 there was no further significant improvement (IMM=46 in the last 15 years, p=0.139). Maternal mortality was more frequent in the 15 to 39 years age group, in nulliparous patients with term pregnancies and mostly in the immediate postpartum period (53%). Direct obstetric causes occurred in 79.3% and indirect causes in 20.7% of the cases. Analyzing the evolution of the causes of death, it was found that in the first period of time the most frequent direct obstetric causes in descending order were puerperal infection, eclampsia and uterine rupture, while in the second period they were prepartum hemorrhage and eclampsia, and from 1977 to 2001 hemorrhage, abortion and preeclampsia. Analysis of the past 15 years showed the absence of maternal deaths by either preeclampsia or puerperal infection and the main causes were peripartum hemorrhage, abortion and indirect obstetrical causes. Relating maternal mortality to the type of delivery by the relative risk between cesarean section and vaginal delivery, it was found that when the indication of cesarean section is inevitable its risk is lower (relative risk = 0.6) than through vaginal delivery. CONCLUSIONS: despite the reduction along the 75 years of study, maternal mortality of 46 per 100,000 live births is still very high, and there was no significant decrease since 1972. Many deaths are avoidable. Hemorrhage is at present the most frequent cause of maternal death, the decision to intervene should be fast, and a proper indication for a cesarean section is a safe option. Maternal mortality caused by abortion is increasing alarmingly and family planning is essential.
Key-words AbortionEclampsiaHemorrhageMaternal mortalityPreeclampsiaPuerperal infectionRetrospective studiesSee moreViews46This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Summary
Artigos OriginaisMaternal mortality: 75 years of observations in a teaching maternity hospital
Revista Brasileira de Ginecologia e Obstetrícia. 2006;28(7):380-387
12-06-2006DOI 10.1590/S0100-72032006000700002
Views46PURPOSE: to evaluate all maternal deaths that occurred between 1927 and 2001, among 164,161 patients admitted to the Maternidade Therezinha de Jesus, the obstetrical service of the "Universidade Federal de Juiz de Fora", Brazil. METHODS: a retrospective study of 144 maternal deaths that occurred in the maternity hospital in 75 years, with 131,048 live births in the same period of time, analyzing all patients's records regarding their clinical history and data from death certificates. Autopsies were not performed. Data obtained were age, parity, gestation length, complications, moment, and causes of death. The index of maternal mortality (IMM) period 100 thousand live births was utilized. For statistical analysis the chi2 test and the exponential smoothing technique were used (alpha=0.05). RESULTS: IMM decreased from 1544 in the period 1927-1941 to 314 (p<0.001) between 1942 and 1956 and from 1957 to 1971 it was reduced to 76.4 per 100 thousand live births (p<0.001). Nevertheless, since 1972 there was no further significant improvement (IMM=46 in the last 15 years, p=0.139). Maternal mortality was more frequent in the 15 to 39 years age group, in nulliparous patients with term pregnancies and mostly in the immediate postpartum period (53%). Direct obstetric causes occurred in 79.3% and indirect causes in 20.7% of the cases. Analyzing the evolution of the causes of death, it was found that in the first period of time the most frequent direct obstetric causes in descending order were puerperal infection, eclampsia and uterine rupture, while in the second period they were prepartum hemorrhage and eclampsia, and from 1977 to 2001 hemorrhage, abortion and preeclampsia. Analysis of the past 15 years showed the absence of maternal deaths by either preeclampsia or puerperal infection and the main causes were peripartum hemorrhage, abortion and indirect obstetrical causes. Relating maternal mortality to the type of delivery by the relative risk between cesarean section and vaginal delivery, it was found that when the indication of cesarean section is inevitable its risk is lower (relative risk = 0.6) than through vaginal delivery. CONCLUSIONS: despite the reduction along the 75 years of study, maternal mortality of 46 per 100,000 live births is still very high, and there was no significant decrease since 1972. Many deaths are avoidable. Hemorrhage is at present the most frequent cause of maternal death, the decision to intervene should be fast, and a proper indication for a cesarean section is a safe option. Maternal mortality caused by abortion is increasing alarmingly and family planning is essential.
Key-words AbortionEclampsiaHemorrhageMaternal mortalityPreeclampsiaPuerperal infectionRetrospective studiesSee moreThis is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. -
Trabalhos Originais
Lymphocyte and lymphocyte subset analyses in women with preeclampsia
Revista Brasileira de Ginecologia e Obstetrícia. 2004;26(8):619-624
11-23-2004
Summary
Trabalhos OriginaisLymphocyte and lymphocyte subset analyses in women with preeclampsia
Revista Brasileira de Ginecologia e Obstetrícia. 2004;26(8):619-624
11-23-2004DOI 10.1590/S0100-72032004000800005
Views56See morePURPOSE: to analyze the relationship of the imune system with preeclamptic pregnancies, comparing lymphocyte and lymphocyte subset analyses of normal pregnant women to pregnancy-induced hypertensive women. To evaluate this immunological function, 40 pregnant women were studied at the "Irmandade da Santa Casa Hospital" of São Paulo: 20 women with normal pregnancies and 20 women with pregnancy-induced hypertension. From all these pregnant women peripheral blood samples were obtained and submitted to the following tests: lymphocyte and lymphocyte subsets analyses (CD4+, CD8+, CD4+/CD8 +CD3+, CD19+). Statistical analysis was performed by the Mann-Whitney test. RESULTS: the serum lymphocyte counts were decreased in women with preeclampsia (preeclamptic group 2295.10±1328.16; control group 3892.80±1430.85, p<0,05); and so were CD4+ (preeclamptic group 1188.80±625.61, control group; 1742.25±628.40, p<0.05); CD8+ (preeclamptic group: 774.00±371.31, control group 1175.70±517.72, p<0,05) and CD3+ (preeclamptic group 1958.65±983.78, control group 2916.95±1117.88, p<0,05). The other tests showed no significant differences between groups. CONCLUSION: the findings indicated a decreased number of lymphocytes, CD4+, CD8+ and CD3+ in preeclampsia.
Views56This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Summary
Trabalhos OriginaisLymphocyte and lymphocyte subset analyses in women with preeclampsia
Revista Brasileira de Ginecologia e Obstetrícia. 2004;26(8):619-624
11-23-2004DOI 10.1590/S0100-72032004000800005
Views56See morePURPOSE: to analyze the relationship of the imune system with preeclamptic pregnancies, comparing lymphocyte and lymphocyte subset analyses of normal pregnant women to pregnancy-induced hypertensive women. To evaluate this immunological function, 40 pregnant women were studied at the "Irmandade da Santa Casa Hospital" of São Paulo: 20 women with normal pregnancies and 20 women with pregnancy-induced hypertension. From all these pregnant women peripheral blood samples were obtained and submitted to the following tests: lymphocyte and lymphocyte subsets analyses (CD4+, CD8+, CD4+/CD8 +CD3+, CD19+). Statistical analysis was performed by the Mann-Whitney test. RESULTS: the serum lymphocyte counts were decreased in women with preeclampsia (preeclamptic group 2295.10±1328.16; control group 3892.80±1430.85, p<0,05); and so were CD4+ (preeclamptic group 1188.80±625.61, control group; 1742.25±628.40, p<0.05); CD8+ (preeclamptic group: 774.00±371.31, control group 1175.70±517.72, p<0,05) and CD3+ (preeclamptic group 1958.65±983.78, control group 2916.95±1117.88, p<0,05). The other tests showed no significant differences between groups. CONCLUSION: the findings indicated a decreased number of lymphocytes, CD4+, CD8+ and CD3+ in preeclampsia.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. -
Trabalhos Originais
Ultrastructural glomerular alterations in preeclampsia
Revista Brasileira de Ginecologia e Obstetrícia. 2004;26(3):185-192
07-05-2004
Summary
Trabalhos OriginaisUltrastructural glomerular alterations in preeclampsia
Revista Brasileira de Ginecologia e Obstetrícia. 2004;26(3):185-192
07-05-2004DOI 10.1590/S0100-72032004000300003
Views0See morePURPOSE: to investigate the glomerular alterations in patients with severe preeclampsia, as well as to evaluate the evolution of these lesions, relating them to the moment of the renal biopsy. METHODS: seventy-two pregnant women with hypertensive syndrome underwent renal biopsy in the puerperium. Appropriate samples for electron microscopic examination were obtained from 39 patients and grouped as follows: 25 with preeclampsia and 14 with superimposed preeclampsia. Biopsy findings were classified into: normal kidney, endothelial cell edema, mesangial expansion, mesangial interposition, subendothelial fibrinoid deposits, and podocyte fusion. RESULTS: the most frequent alterations found in both groups were subendothelial fibrinoid deposits and podocyte fusion. Endothelial edema was present in 84% of the preeclampsia patients and in 92.9% of the superimposed preeclampsia cases. There was no association between the degree of hypertension and the severity of endothelial edema. A tendency to mesangial interposition was observed in patients who had a biopsy after the seventh day after delivery. Podocyte fusion showed a significant association with 24-hour proteinuria. CONCLUSIONS: the above mentioned glomerular alterations represent a spectrum of complex and dynamic lesions that together represent the ultrastructural characteristics of preeclampsia which should no longer be diagnosed based only on the presence or absence of endothelial edema.
Views0This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Summary
Trabalhos OriginaisUltrastructural glomerular alterations in preeclampsia
Revista Brasileira de Ginecologia e Obstetrícia. 2004;26(3):185-192
07-05-2004DOI 10.1590/S0100-72032004000300003
Views0See morePURPOSE: to investigate the glomerular alterations in patients with severe preeclampsia, as well as to evaluate the evolution of these lesions, relating them to the moment of the renal biopsy. METHODS: seventy-two pregnant women with hypertensive syndrome underwent renal biopsy in the puerperium. Appropriate samples for electron microscopic examination were obtained from 39 patients and grouped as follows: 25 with preeclampsia and 14 with superimposed preeclampsia. Biopsy findings were classified into: normal kidney, endothelial cell edema, mesangial expansion, mesangial interposition, subendothelial fibrinoid deposits, and podocyte fusion. RESULTS: the most frequent alterations found in both groups were subendothelial fibrinoid deposits and podocyte fusion. Endothelial edema was present in 84% of the preeclampsia patients and in 92.9% of the superimposed preeclampsia cases. There was no association between the degree of hypertension and the severity of endothelial edema. A tendency to mesangial interposition was observed in patients who had a biopsy after the seventh day after delivery. Podocyte fusion showed a significant association with 24-hour proteinuria. CONCLUSIONS: the above mentioned glomerular alterations represent a spectrum of complex and dynamic lesions that together represent the ultrastructural characteristics of preeclampsia which should no longer be diagnosed based only on the presence or absence of endothelial edema.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. -
Trabalhos Originais
Influence of atrial natriuretic peptide and type B natriuretic peptide plasma levels on arterial pressure in pregnancies complicated by preeclampsia
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(6):413-418
10-07-2003
Summary
Trabalhos OriginaisInfluence of atrial natriuretic peptide and type B natriuretic peptide plasma levels on arterial pressure in pregnancies complicated by preeclampsia
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(6):413-418
10-07-2003DOI 10.1590/S0100-72032003000600005
Views68See morePURPOSE: to determine the existence of association between blood pressure rise and plasma ANP and BNP levels in pregnancies complicated by preeclampsia, considering the existence of a hypertensive state before pregnancy and supportive drug influence on these hormones. METHODS: in a case-control transversal study, 86 pregnant women were assessed regarding arterial pressure level and plasma ANP and BNP levels. Clinical and laboratory tests were carried out to diagnose preeclampsia and the use of hypotensive drugs and magnesium sulfate was considered. Hormone determinations were obtained through radioimmunoassay, after extraction in C18 Sep-pak columns. Correlation was investigated by means and regression analysis in the whole group of pregnant women and in specific groups, considering prior hypertension. RESULTS: plasma ANP values were 41.5±7.3, 78.4±13.1 and 89.2±13.4pg/mL (p<0.00001) and plasma BNP values were 79.5±15.8, 176.7±42.2 and 208.3±63.5 pg/mL (p=0.005), respectively, for mean blood pressure =107 mmHg, 107-139 mmHg and =140 mmHg. It was verified that the positive correlation between plasma ANP concentrations and pressure levels in preeclampsia did not depend on the existence of a hypertensive state before pregnancy (p<0.0001: preeclampsia and p<0.01: preeclampsia superimposed on chronic hypertension), whereas BNP dosages were not associated with the arterial pressure in the group with arterial hypertension prior to pregnancy (p=0.004: preeclampsia and p=0.18: preeclampsia superimposed on chronic hypertension). CONCLUSION: aggravation of hypertension in preeclampsia correlates with serum ANP and BNP concentrations, although BNP values may be influenced by the existence of a prior hypertensive state.
Views68This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Summary
Trabalhos OriginaisInfluence of atrial natriuretic peptide and type B natriuretic peptide plasma levels on arterial pressure in pregnancies complicated by preeclampsia
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(6):413-418
10-07-2003DOI 10.1590/S0100-72032003000600005
Views68See morePURPOSE: to determine the existence of association between blood pressure rise and plasma ANP and BNP levels in pregnancies complicated by preeclampsia, considering the existence of a hypertensive state before pregnancy and supportive drug influence on these hormones. METHODS: in a case-control transversal study, 86 pregnant women were assessed regarding arterial pressure level and plasma ANP and BNP levels. Clinical and laboratory tests were carried out to diagnose preeclampsia and the use of hypotensive drugs and magnesium sulfate was considered. Hormone determinations were obtained through radioimmunoassay, after extraction in C18 Sep-pak columns. Correlation was investigated by means and regression analysis in the whole group of pregnant women and in specific groups, considering prior hypertension. RESULTS: plasma ANP values were 41.5±7.3, 78.4±13.1 and 89.2±13.4pg/mL (p<0.00001) and plasma BNP values were 79.5±15.8, 176.7±42.2 and 208.3±63.5 pg/mL (p=0.005), respectively, for mean blood pressure =107 mmHg, 107-139 mmHg and =140 mmHg. It was verified that the positive correlation between plasma ANP concentrations and pressure levels in preeclampsia did not depend on the existence of a hypertensive state before pregnancy (p<0.0001: preeclampsia and p<0.01: preeclampsia superimposed on chronic hypertension), whereas BNP dosages were not associated with the arterial pressure in the group with arterial hypertension prior to pregnancy (p=0.004: preeclampsia and p=0.18: preeclampsia superimposed on chronic hypertension). CONCLUSION: aggravation of hypertension in preeclampsia correlates with serum ANP and BNP concentrations, although BNP values may be influenced by the existence of a prior hypertensive state.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. -
Trabalhos Originais
Use of microalbuminuria in random urine samples to screen diabetic pregnant women for preeclampsia
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(4):277-281
09-04-2003
Summary
Trabalhos OriginaisUse of microalbuminuria in random urine samples to screen diabetic pregnant women for preeclampsia
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(4):277-281
09-04-2003DOI 10.1590/S0100-72032003000400009
Views92See morePURPOSE: the aim of the present study was to evaluate the accuracy of microalbuminuria to predict preeclampsia. METHODS: a prospective study of 45 consecutive diabetic gestations that were tested for microalbuminuria before the 18th week, between the 18th and 24th week and between the 32nd and 36th week of gestation. All patients had their prenatal care done from January 2000 to December 2001. The DCA 2000 microalbumin/creatinine assay is a quantitative method for measuring low concentrations of albumin, creatinine and the albumin/creatinine ratio in urine. According to laboratory standards, an albumin/creatinine ratio >16 mg/g (1.8 mg/mmol) indicates incipient renal damage and risk for preeclampsia. The sensitivity, specificity, positive and negative predictive values of the albumin/creatinine ratio were determined to predict the occurrence or the absence of preeclampsia, diagnosed through clinical criteria. RESULTS: of all patients, 17% developed preeclampsia. The sensitivity of albumin/creatinine ratio increased from 12.5% at 18 weeks to 25% between the 18th and 24th week and to 87% after the 32nd week. On the other hand, specificity presented a decreasing value from 97 to 89 and 83%, respectively). The positive predictive value was relatively low in the three different periods of evaluation (50, 33 and 53%, respectively. The negative predictive value was increased in the three stages of gestational age (83, 84 and 96%, respectively). CONCLUSIONS: quantification of microalbuminuria could correctly predict the absence of preeclampsia but was less accurate to predict the occurrence of the disease in diabetic pregnancies.
Views92This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Summary
Trabalhos OriginaisUse of microalbuminuria in random urine samples to screen diabetic pregnant women for preeclampsia
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(4):277-281
09-04-2003DOI 10.1590/S0100-72032003000400009
Views92See morePURPOSE: the aim of the present study was to evaluate the accuracy of microalbuminuria to predict preeclampsia. METHODS: a prospective study of 45 consecutive diabetic gestations that were tested for microalbuminuria before the 18th week, between the 18th and 24th week and between the 32nd and 36th week of gestation. All patients had their prenatal care done from January 2000 to December 2001. The DCA 2000 microalbumin/creatinine assay is a quantitative method for measuring low concentrations of albumin, creatinine and the albumin/creatinine ratio in urine. According to laboratory standards, an albumin/creatinine ratio >16 mg/g (1.8 mg/mmol) indicates incipient renal damage and risk for preeclampsia. The sensitivity, specificity, positive and negative predictive values of the albumin/creatinine ratio were determined to predict the occurrence or the absence of preeclampsia, diagnosed through clinical criteria. RESULTS: of all patients, 17% developed preeclampsia. The sensitivity of albumin/creatinine ratio increased from 12.5% at 18 weeks to 25% between the 18th and 24th week and to 87% after the 32nd week. On the other hand, specificity presented a decreasing value from 97 to 89 and 83%, respectively). The positive predictive value was relatively low in the three different periods of evaluation (50, 33 and 53%, respectively. The negative predictive value was increased in the three stages of gestational age (83, 84 and 96%, respectively). CONCLUSIONS: quantification of microalbuminuria could correctly predict the absence of preeclampsia but was less accurate to predict the occurrence of the disease in diabetic pregnancies.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preeclampsia Archives - Revista Brasileira de Ginecologia e Obstetrícia
