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Hypertension I: Introduction

Hypertension I: Introduction

Hypertension is a widespread, long-term medical condition where blood pressure in the arteries remains elevated. It is characterized by systolic blood pressure readings of 130 mm Hg or above or diastolic blood pressure (DBP) readings of 80 mm Hg or higher. Unmanaged hypertension poses significant health risks, making the distinction between primary (or essential) hypertension and secondary hypertension crucial, as their management and implications vary.Primary HypertensionPrimary hypertension,...

Hypertension III: Clinical Manifestations and Diagnostic Studies

Hypertension III: Clinical Manifestations and Diagnostic Studies

Hypertension is asymptomatic and also referred to as the "silent killer" until it progresses to a severe stage or causes target organ disease. Patients may experience symptoms stemming from the strain on blood vessels and tissues in various organs or the heart's increased workload.Physical exams might show no abnormalities other than high blood pressure. Signs of vascular damage, when present, correspond to the organs supplied by the affected vessels, leading to target organ damage. For...

Hypertension V: Nursing Management

Hypertension V: Nursing Management

The nursing management of hypertension involves accurately assessing symptoms, making a comprehensive nursing diagnosis, collaborating with patients to set goals, and implementing targeted interventions to mitigate the condition's impact and improve patient well-being.Comprehensive AssessmentThe initial step in nursing care for hypertension involves a thorough patient assessment. It includes evaluating symptoms such as headaches, dizziness, blurred vision, and previous hypertension episodes.

Hypertension and Regulation of Blood Pressure

Hypertension and Regulation of Blood Pressure

Hypertension, the most common cardiovascular disease, is diagnosed through repeated measurements of elevated blood pressure. Its risks, including damage to the kidney, heart, and brain, are directly proportional to blood pressure levels. Starting from 115/75 mm Hg, the risk of cardiovascular disease doubles with each increment of 20/10 mm Hg. The diagnosis relies on blood pressure measurements, not on patient symptoms, as hypertension is often asymptomatic until end-organ damage is imminent or...

Hormonal Regulation

Hormonal Regulation

The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.

Hypertension II: Pathophysiology

Hypertension II: Pathophysiology

Hypertension is a chronic condition in which the blood's force against artery walls is excessively high, posing risks such as heart disease. The condition's underlying mechanisms involve complex interactions among the cardiovascular, kidney, and autonomic nervous systems.Renin-Angiotensin-Aldosterone System (RAAS): This system significantly influences blood pressure regulation. When blood pressure decreases, the kidneys secrete renin. This enzyme transforms angiotensinogen, a plasma protein,...

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Chronic hypertension in pregnancy.

Andrew E Czeizel¹, Ferenc Bánhidy

¹Foundation for the Community Control of Hereditary Diseases and Second Department of Obstetrics and Gynecology, Semmelweis University, School of Medicine, Budapest, Hungary. czeizel@interware.hu

Current Opinion in Obstetrics & Gynecology

|December 24, 2010

Summary

Pregnant women with chronic hypertension face increased risks of complications like pre-eclampsia and preterm birth. Current treatments are insufficient, necessitating more effective antihypertensive therapies for better maternal and infant outcomes.

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Area of Science:

Obstetrics and Gynecology
Cardiology
Perinatology

Background:

Chronic hypertension affects a significant number of pregnancies.
Hypertension in pregnancy poses risks to both mother and fetus.
Existing management strategies require evaluation.

Purpose of the Study:

To assess maternal characteristics, pregnancy complications, and birth outcomes in pregnant women with chronic hypertension.
To review data from published studies and the Hungarian Case-Control Surveillance System of Congenital Abnormalities.
To evaluate the effectiveness of antihypertensive drugs in mitigating pregnancy-associated risks.

Main Methods:

Systematic review of published studies.
Analysis of population-based data from the Hungarian Case-Control Surveillance System of Congenital Abnormalities.
Evaluation of maternal characteristics, pregnancy complications, and birth outcomes.

Main Results:

Women with treated chronic hypertension had higher risks of threatened abortion, preterm delivery, placental disorders, and gestational diabetes.
Offspring showed increased risks for hypospadias and esophageal atresia/stenosis.
Pre-eclampsia and low birthweight remain significant concerns.

Conclusions:

Current antihypertensive treatments do not fully counteract the adverse effects of severe chronic hypertension in pregnancy.
More effective drug combinations are needed for managing severe chronic hypertension in pregnant women.
Further research is required to confirm observed risks in offspring.