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Hypotension, also known as low blood pressure, is a cardiovascular condition characterized by abnormally reduced blood pressure. [1] Blood pressure is the force of blood pushing against the walls of the arteries as the heart pumps out blood [2] and is indicated by two numbers, the systolic blood pressure (the top number) and the diastolic blood pressure (the bottom number), which are the ...
Permissive hypotension or hypotensive resuscitation [1] is the use of restrictive fluid therapy, specifically in the trauma patient, that increases systemic blood pressure without reaching normotension (normal blood pressures). The goal blood pressure for these patients is a mean arterial pressure of 40-50 mmHg or systolic blood pressure of ...
The first-dose phenomenon is a sudden and severe fall in blood pressure that can occur when changing from a lying to a standing position the first time that an alpha blocker drug is used [1] or when resuming the drug after many months off. [2]
[9] 25% of hypertensive crises have been found to be hypertensive emergency versus urgency when presenting to the ER. [11] Risk factors for hypertensive emergency include age, obesity, noncompliance to anti hypertensive medications, female sex, Caucasian race, preexisting diabetes or coronary artery disease, mental illness, and sedentary ...
The drop in blood pressure may be sudden (vasovagal orthostatic hypotension), within 3 minutes (classic orthostatic hypotension) or gradual (delayed orthostatic hypotension). [4] It is defined as a fall in systolic blood pressure of at least 20 mmHg or diastolic blood pressure of at least 10 mmHg after 3 minutes of standing.
When mechanisms for the degradation of bradykinin are impaired, the peptide builds up and causes hypotension. Angiotensin converting enzyme (ACE) is primarily responsible for its degradation (75%) but can be inhibited by administration of blood pressure medications called ACE inhibitors .
Angiotensin II (Ang II) is a medication that is used to treat hypotension resulting from septic shock or other distributive shock. It is a synthetic vasoconstrictor peptide that is identical to human hormone angiotensin II [3] and is marketed under the brand name Giapreza.
Midodrine, sold under the brand names ProAmatine and Orvaten among others, is an antihypotensive medication used to treat orthostatic hypotension (low blood pressure when standing) and urinary incontinence. [3] [5] [1] It is taken by mouth. [3] [1]