Tuesday 17 June 2014

Hypertension

Hypertension is a systolic blood pressure ≥140 mmHg and diastolic blood pressure ≥90 mmHg, or more if the patients were taking antihypertensive medication.

Some limitations of hypertension, namely:

According to the WHO blood pressure equal to or above 160/95 mmHg

                      WHO / ISH (International Society of Hypertension)
Kaplan

Age <45 years : blood pressure above 130/90 mmHg

Age >45 years : blood pressure above 145/95 mmHg

Women : 160/95 mmHg



Etiology

Based on the causes of hypertension were divided into two groups, namely:

Essential hypertension or primary hypertension of unknown cause, there are about 95% of cases. Many factors can influence such as genetic, environmental, metabolic disorders and factors that increase risk, such as obesity, alcohol, smoking and polycythemia.

Secondary hypertension or renal hypertension. There are about 5% of cases. Known specific cause, such as the use of estrogen, kidney disease, pregnancy-related hypertension and others.



Clinical Manifestations

Elevation of blood pressure is sometimes the only symptom. If so, new symptoms appear after complications in the kidneys, eyes, brain or heart. Another common symptom is headache, epistaxis, angry, buzzing ears, heaviness in the nape of the neck, difficulty sleeping, dizzy eyes, and dizziness.



Laboratory Test

Laboratory test are routinely performed prior to initiating therapy aims to determine the presence of organ damage and other risk factors or find the cause of hypertension. Usually examined urinalysis, complete peripheral blood, blood chemistry (potassium, sodium, creatinie, fasting blood sugar, total cholesterol, HDL cholesterol and ECG.



Diagnosis

The diagnosis of hypertension can not be enforced in one-time measurement, can be determined only after two or more measurements at different visits, unless there is a high rise or clinical symptoms. Blood pressure measurements performed in the patient sat back, after leaning for 5 minutes, with appropriate cuff size (covering 80% of the arm). With mercury sphygmomanometers are still considered the best gauge.



Management

The purpose of the detection and management of hypertension is to lower the risk of cardiovascular disease and related mortality and morbidity. The goal of therapy is to achieve and maintain a systolic pressure below 140 mmHg and diastolic blood pressure below 90 mmHg and  controlling risk factors. This can be achieved through lifestyle modification and diet, or with hypertension medications.



The sixth report of the join National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure.


Note; The patient is not being sick or taking antihypertensive medication. If the systolic and diastolic pressures are in different categories, enter in the higher category.



Quite effective lifestyle modification, may lower cardiovasculer risk with little cost and minimal risk. Governance is still advisable though to be accompanied by hypertension drugs because it can decrease the number and dosages of drugs. The steps are recommended for:

  • Loss weight if there is excess (body mass index ≥27) 
  • Limiting alcohol 
  • Increase aerobic physical activity (30-45 minutes/day) 
  • Reduce your intake of sodium (<100 mmol Na/Na 2.4g/6g NaCl/day) 
  • Maintain adequate intake of potassium (90mmol/day) 
  • Maintain intake of adequate calcium and magnesium 
  • Stop smoking and reduce intake of saturated fats and cholesterol in the diet

Treatment with antihypertensive drugs for most patients starting with a low dose and increase in titration in accordance with the age, needs and age. Optimal therapy to be effective for 24 hours, and preferably in a single dose due to better compliance, less expensive, can take control of hypertension continually and smoothly, and protect patients against the risk of sudden death, heart attack, or stroke due to increased pressure blood suddenly waking.

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