OBJETIVO: Analisar os padrões histopatológicos das artérias do leito placentário em gestações complicadas por hipertensão arterial crônica (HAC) comparando-os com o de grávidas normais. MÉTODOS: Biópsias de leito placentário, segundo técnica de Robertson et al.¹, foram realizadas em pacientes com idade gestacional igual ou superior a 28 semanas, submetidas a cesárea, após a dequitação. O grupo controle (GC) foi composto por 25 pacientes normais e o grupo de estudo composto por 13 pacientes com HAC leve (HL), 11 pacientes com HAC moderada (HM) e 11 pacientes com HAC grave (HG). As classes de hipertensão foram consideradas leve (PAD 90 |- 100 mmHg), moderada (PAD 100 |- 110 mmHg) e grave (PAD³ > 110mmHg). Os padrões histológicos das artérias espiraladas foram classificados em: padrão inalterado, modificações fisiológicas, desorganização da camada média, alterações hiperplásicas, necrose e aterose aguda. RESULTADOS: 1) Os achados anormais foram predominantes no grupo de hipertensas, sendo mais freqüente nos grupos HM e HG. 2) O achado anormal mais prevalente foi a desorganização da camada média, com distribuição semelhante nos grupos HM e HG. 3) Os padrões normais ocorreram nos grupos GC e HL, com distribuição semelhante entre si.

OBJECTIVES: To analyze histopathological patterns of placental bed arteries in pregnancies complicated by chronic arterial hypertension. Alterations were considered according to clinical classification of the hypertensive disorders as mild (MG); moderate (MoG) and severe (SG) for comparison with uncomplicated pregnancies, control group (CG). METHODS: Placental bed biopsy was performed in 60 pregnant women; the study group was comprised of pregnant women with hypertension, subdivided in 13 with severe chronic hypertension (CH), 11 with moderate CH and 11 with mild CH, and results were compared to 25 placental bed biopsies from uncomplicated pregnancies. All the pregnant women had a gestational age of at least 28 weeks of gestation with a live fetus and were submitted to cesarean section. Hypertension was considered mild with diastolic blood pressure (DBP) 90 I? 100 mmHg, moderate DBP 100 I? 110 mmHg and severe DBP = 110 mmHg. Placental bed variables selected for histological analysis were: unaltered patterns, physiological changes, medial layer disorganization, medial and intimal hyperplasic changes, acute necrosis and atherosis. RESULTS: In cases with SG and MoG there was predominance of abnormal histophysiological findings: medial layer disorganization and hyperplasic changes, with a statistically significant difference when compared to MG and CG. Alteration in the medial layer was observed in these cases. The normal pattern, unaltered patterns and physiologic changes were more frequent in CG and MG. Physiological changes were the most usual finding, further, there was no acute necrosis or atherosis. CONCLUSION: 1. Abnormal histophysiological findings were predominant in hypertensive pregnant women compared to the normotensive ones; 2. These patterns were more frequent, according to the severity of the hypertensive disorders: Severe, Moderate and Mild; 3. More significant abnormal findings were a change in the medial layer, mainly in the group with severe hypertensive disorders; 4. The groups with moderate and severe hypertensive disorders when compared had similar results; 5. The normal histological pattern was higher in the control group and patients with mild hypertensive disorders and disclosed a similarity between them 6. The most usual pattern was physiologic changes, which was more frequent in the control group.

OBJETIVO: Avaliar o valor prognóstico da proteinúria nas gestantes com síndromes hipertensivas nos desfechos maternos e perinatais. MÉTODOS: Estudo transversal retrospectivo de 334 gestantes com síndromes hipertensivas que pariram no Hospital São Paulo na disciplina de Obstetrícia da UNIFESP/EPM, no período de 1º de janeiro de 1999 a 31 de dezembro de 2002. RESULTADOS: Após a revisão dos prontuários, as pacientes foram divididas em quatro grupos: I sem proteinúria (n-203), II com proteinúria de 0,3 a 1g (n-39), III de 1 a 2g (n-45) e grupo IV de 2g ou mais (n-47). Na ausência da proteinúria houve um caso de descolamento prematuro da placenta. Com proteinúria observou-se desfechos maternos adversos, com a presença das complicações, proporcional à elevação da proteinúria, sendo a síndrome HELLP a mais freqüente com 30,5% (40/131) seguida da eclâmpsia com 3,8% (5/131), DPP 3,01% (4/131) e insuficiência renal 0,7% (1/131). Foi constatado um óbito materno nesse grupo, perfazendo-se o CMM de 763100.000/n.v. Em relação aos desfechos perinatais, no grupo sem proteinúria não houve elevação dos efeitos adversos. Na presença da proteinúria e a elevação dos seus níveis observou-se pior prognóstico perinatal com os seguintes indicadores: aumento da prematuridade (62,2% vs 11,5%), recém-nascidos com peso < 2500g (6,5% vs 1,5%), Apgar < 7 no 5º minuto (30,4% vs 3,5%), restrição de crescimento intra-útero (41,9% vs 6,5%), cuidados intensivos na unidade neonatal (59,8% vs 15,5%), natimortos (14,4% vs 1,4%), e óbitos neonatais (6,1% vs 0,98%). O coeficiente de mortalidade perinatal foi maior com proteinúria (175 vs 19,7) e, quando > 2g (297,8 vs 19,7). CONCLUSÕES: A presença da proteinúria e a elevação dos seus níveis, aumentaram as complicações maternas, principalmente a síndrome HELLP e eclâmpsia. Observou-se incidência de complicações perinatais com elevação significativamente maior da prematuridade, recém-nascidos com Apgar < 7, peso < 2500g, CIUR, natimortos e óbitos neonatais.

AIM: The purpose of this study was to determine the role of proteinuria on pregnancy outcome in hypertensive syndrome with singleon pregnancies. METHODS: Transversal study with retrospective data of 334 pregnancies complicated by hypertensive syndromes who were delivered in the Department of Obstetrics of UNIFESP/EPM from January 1, 1999 to December 31, 2002. RESULTS: The patients were divided into four groups: (I) without proteinuria (n-203); (II) with proteinuria of 0.3 to 1.0g (n-39); (III) 1.0 to 2.0g (n-45); and (IV) 2.0g or more. Without proteinuria there was one case of placental abruption. The presence of proteinuria predicted adverse maternal outcome with increase of complications proportional to his elevation; among them, HELLP syndrome was the most frequent with 30.5% (40/131) followed by eclampsia with 3.8% (5/131), DPP 3.1% (4/131) and renal insufficiency with 0.7% (1/131). It was confirmed one maternal death in that group, when Maternal Mortality of 763/100.000nv was added up. As to the perinatal effects there was not increase of adverse effects without proteinuria. In the presence of proteinuria and its levels was observed the worst perinatal outcome with the elevation of the following indicatives: increase prematurety (62.2% vs 11.5%), newborn with weight < 2500g (6.5% vs 1.5%), newborn with Apgar < 7 in the 5th minute (30.4% vs 3.5%), concepts with growing restriction of intrauterine (41.9% vs 6.5%), newborn interned in the neonatal undid, (59.8% vs 15.5%) stillborn (14.4% vs 1.4%), neonatal deaths (6.1% vs 0.98%). The Perinatal Mortality was greater with proteinúria (175 vs 19,7) and, when = 2.0g (297.8 vs 19.6). CONCLUSIONS: The presence of proteinuria in the hipertensives syndromes during gestation and the elevation of their levels increase the risks of maternal complications, especially HELLP syndromes and eclampsia. Besides, it was observed a significative incidence of premature birth, newborn with Apgar < 7, weight < 2500g, IUGR, stillborn and neonatal deaths.