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Hypertensive Emergencies: Hypertensive Encephalopathy
Hypertensive encephalopathy is the syndrome of central nervous system dysfunction associated with hypertensive crisis. Patients usually present with headache, nausea, vomiting, confusion and visual disturbances.
On physical examination can register papilledema and focal neurological deficits that are forcing a thorough differential diagnosis of ischemic or hemorrhagic stroke. Petechial hemorrhages and multiple microinfarcts in a brain region are rare and can cause mild hemiparesis, aphasia, and visual disturbances focused.
The term hypertensive encephalopathy should be reserved for the neurological syndrome described before and should not be used to refer to episodes of recurrent headaches, epileptic seizures, episodes of transient cerebral ischemia or strokes, which are often accompanied by hypertension. Read the rest of this entry »
Hypertensive Emergencies: Stroke and Aortic Dissection
Stroke
Hypertension frequently accompanies stroke and often with high levels rise tensional This reagent has a protective effect on stroke immediately as an attempt to maintain adequate cerebral perfusion pressure to the area of ”ischemic penumbra” cerebral.
The decrease in mean arterial pressure by pharmacological levels below 100 to 110 mm. of Hg., aggressively, can cause severe neurological damage further.
Aortic Dissection
Aortic aneurysm is defined as a dilatation of the aortic diameter greater than 5 cms.
The most common cause is atherosclerotic and 40% of them are located in the ascending aorta, 35% in the descending thoracic aorta, 15% in the aortic arch and 10% in the thoracoabdominal aorta. Read the rest of this entry »
Hypertensive Crisis Treatment: Pharmacology
Sodium nitroprusside:
It is the drug of choice in the management of hypertensive crisis associated with the exception of the pregnancy. It is a potent arterial vasodilator and intravenously administered venoso.Se pump infusion at a dose of 0.25 to 8 micrograms/kg/minute.
Its onset is rapid between 3-5 minutes and its effects (thiocyanates) occurs
by excessively rapid infusions or for prolonged periods of time. Thiocyanate toxicity causes blurred vision, tinnitus, confusion and seizures. Its excess can be removed by dialysis. Read the rest of this entry »
The Treatment of Hypertensive Crisis
The fundamental principle of care treatment for hypertensive crisis is likely assessment of target organ damage.
Those patients who are at critical organ should be placed in a comfortable room and carefully re-evaluated.
Over 25% of patients with high blood pressure, decrease their values after this relaxation procedure.
- Establish an intravenous
- Establish, if available, an arterial line to monitor blood pressure
- Place a heart monitor
- Make two questions:
How quickly should I lower blood pressure?
To what level should I lower it? Read the rest of this entry »
Hypertensive Crisis: History and Examination
There is a concept that hypertensive crisis usually occurs secondary to specific causes, however the most common cause of hypertensive crisis ezel inadequate treatment of primary essential hypertension. The major organ involvement in hypertensive crisis occurs on the central nervous system, the cardiovascular system and kidney.
Central Nervous System is impaired when the blood pressure levels beyond the capacity of cerebral autoregulation to maintain a perfusion pressure constante.Con pressure increases there is a reaction that vasoconstriction is exceeded when the pressure levels reach a certain level . There is then a transudation through the capillaries, with progressive anatomical damage to the arteriole and fibrinoid necrosis.
These changes lead to progressive loss of autoregulation and cardiovascular system parenquimatoso.El ischemic damage is affected by a disproportionate increase in afterload which can lead to myocardial failure with pulmonary edema, myocardial ischemia and myocardial infarction. Read the rest of this entry »
Hypertensive Crisis
Hypertensive urgencies and emergencies occur in less than 1% of patients with arterial hypertension.
Hypertensive emergency is characterized by symptoms of severe hypertension (conventionally, but not limited) to a diastolic pressure of 110 mm. Hg.con involvement of an organic system (CNS, cardiovascular or renal disease) from which the pressure should be lowered within a period of minutes or hours.
Hypertensive emergencies associated with hypertensive encephalopathy, intracranial hemorrhage, stroke and acute pulmonary edema, myocardial infarction, adrenergic crisis, dissecting aortic aneurysm, and eclampsia. Hypertensive emergencies occur more often in men than in women and a higher incidence between 40 and 50. Read the rest of this entry »
Hypertension and Kidney Disease: Hypertension in Renal Patient
Do you have some peculiarity of hypertension in renal patients?
In these patients is more useful measure ambulatory blood pressure (MAP) as often lose the nocturnal blood pressure and this is evidenced by the record during sleep. This lack of decline is also a predictor of renal damage and mortality.
Hypertension in patients with renal disease is more sensitive to changes in plasma volume directly related to salt intake. The maintenance diets low in sodium (1 to 2 g daily) helps provide a good control of blood pressure and facilitates the action of drugs. However, a very intense sodium depletion can lead to hypovolemia. Read the rest of this entry »
Hypertension and Kidney Disease: Microalbuminuria
Is kidney failure always a serious and deadly situation?
There are two forms of kidney involvement. The acute in hours or days that function is lost and in many cases you can return to recover, and chronic condition in which the damage occurs over years.
Often there are no symptoms until it has lost a high percentage of renal function. Sometimes the only symptom of kidney damage is the presence of hypertension.
How do I know if I have kidney failure?
Because it is asymptomatic until very advanced stages of knowing how the situation of renal function is to conduct analytical parameters which determine the level of urea and creatinine, sodium and potassium in the blood, the acidity of the blood and urine excretion of these elements and proteins. Read the rest of this entry »
Hypertension and Kidney Disease
How does the kidney with hypertension?
The kidney is the organ responsible for filtering the blood, purging toxic substances, is also producing substances that help regulate the production of red blood cells, erythropoietin, and involved in maintaining blood pressure, renin .
The kidney is involved in the pathways regulating blood pressure and maintaining blood volume, is involved in the development of hypertension when one of its many functions are not executed properly and is the target organ of hypertension, as it is one who suffers more damage when blood pressure levels is permanently high.
What is kidney failure?
It is the result of failure in kidney function, blood stops purged so that poisons accumulate, some of them such as urea, resulting from the degradation of proteins, which when found in high amounts can cause coma. Read the rest of this entry »
Hypertension in Cushing’s Syndrome
What is Cushing’s syndrome?
This name is given to an increase in steroid production (cortisol) in the body by the existence of a tumor in the pituitary or adrenal glands, but can also be caused by taking steroids chronically (much more common for earlier).
The higher level of steroids can cause hypertension, diabetes or glucose intolerance, obesity, which is distributed in a particular way on the trunk and neck, skin striae vinous color, moon face, muscle weakness, fatigue and osteoporosis and others.
Characteristics of hypertension in Cushing
Hypertension affects more than 80% of patients with Cushing’s syndrome and is often difficult to treat serious. It is thought that gravity can be related to the loss of nocturnal dip in blood pressure. Read the rest of this entry »