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Leon C. Chesley and hypertension in pregnant women
1Department of Obstetrics and Gynecology, University of Nijmegen, The Netherlands.
Insights
Pregnancy in women with hypertensive disease significantly increases fetal loss and maternal mortality. This study analyzed 301 pregnancies, revealing factors like high blood pressure and proteinuria worsen outcomes.
Area of Science:
- Obstetrics and Gynecology
- Maternal-Fetal Medicine
- Cardiovascular Health in Pregnancy
Background:
- This study revisits Leon C. Chesley's pioneering 1947 work on pregnancy in patients with hypertensive disease.
- It analyzes 301 pregnancies from 1931-1944 involving 218 patients diagnosed with hypertensive toxemia.
- The research aimed to study the natural history of pregnancy in hypertensive women without therapeutic abortion bias.
Discussion:
- Fetal loss rates were high: 35% in prior pregnancies, 38% in the first hypertensive pregnancy, and 40% in subsequent ones.
- Nearly 40% of patients experienced mid-pregnancy blood pressure drops, and half had proteinuria.
- Premature placental separation occurred in 5.6% of pregnancies.
Key Insights:
- Fetal loss correlated with higher initial blood pressure, mid-pregnancy pressure increases, and decreased renal function.
- Proteinuria and superimposed toxemia further elevated fetal loss risk.
- Maternal mortality was 2.0% immediate and 4.0% including late puerperal deaths, a 20-fold increase compared to the general hospital population.
Outlook:
- This foundational research highlights the critical need for vigilant monitoring and management of hypertensive disorders during pregnancy.
- Understanding these historical outcomes informs current clinical practices and risk assessment for hypertensive pregnancies.
- Further research can build upon these findings to improve maternal and fetal outcomes in high-risk pregnancies.
Abstract:
Leon C. Chesley's first paper opened with the title 'Pregnancy in the patient with hypertensive disease'(1). Leon C. Chesley PhD, John E. Annitto, MD, MSc (Med), Jersey City, NJ, USA (from the Margaret Hague Maternity Hospital) [Am J Obstet Gynecol 1947;53:372-381]. We quote some lines from this important paper and pioneering work: "We have thought it worth while to survey our experience with pregnancy in women with hypertensive disease. There are relatively few such studies based upon any considerable series, and in most studies extant there has been a selective factor in that therapeutic abortion has been done in the more severely hypertensive patients. It has not been our policy to abort such women, and our large material therefore offers an almost unique opportunity for the study of the natural history of pregnancy in hypertensive women. From the opening of the hospital in October 1931 through to 1944 there were a total of 218 patients in whom recorded blood pressures established the diagnosis of 'hypertensive toxemia,' as defined by the American Committee on Maternal Welfare. A detailed analysis has been made of the 301 pregnancies in which these patients have been seen. The gross fetal loss: in prior pregnancies, 35%; in first hypertensive pregnancy, 38%; in subsequent pregnancies, 40%. Of 47 sisters of these hypertensive patients, who delivered here, 45% had at least one toxic pregnancy. Nearly 40% of the hypertensive patients showed drops in the blood pressure in midpregnancy. Proteinuria of some degree occurred in half of the pregnancies. Renal function was normal in 93% of the pregnancies. Premature separation of the placenta occurred in 5.6% of the pregnancies. Fetal loss increased with: higher initial blood pressure, second trimester rises in blood pressure, higher pressures near delivery, decreased renal function, proteinuria, and superimposed toxemia. There were six immediate maternal mortalities (2.0%) and seven late puerperal deaths. Thus the mortality was 20 times that of the whole hospital experience." From here we will start our "hypertensive journey".