ANGIOTENSIN II
Tests Overview
Angiotensin II is a powerful hormone that helps control blood pressure, fluid balance, and electrolytes in the body.
It is part of the Renin–Angiotensin–Aldosterone System (RAAS).
🔬 How Angiotensin II Is Made
The kidneys release renin
Renin converts angiotensinogen → Angiotensin I
ACE (angiotensin-converting enzyme) converts Angiotensin I → Angiotensin II
⚙️ Main Functions of Angiotensin II
| Function | Effect |
|---|---|
| Vasoconstriction | Narrows blood vessels → increases blood pressure |
| Stimulates aldosterone | Causes kidneys to retain sodium & water |
| Stimulates ADH | Increases water reabsorption |
| Increases thirst | Helps raise blood volume |
👉 Overall effect: Raises blood pressure
🩺 Clinical Importance
Angiotensin II plays a major role in:
Hypertension
Heart failure
Kidney disease
Many blood pressure medicines target this system:
ACE inhibitors (block formation of Angiotensin II)
ARBs (Angiotensin Receptor Blockers) (block its action)
📝 Quick Summary
Powerful blood pressure–raising hormone
Part of the RAAS system
Causes vessel constriction + fluid retention
Target of common hypertension medications
If you’d like, I can also explain how ACE inhibitors or ARBs work in simple terms.
Test Information
Certain blood pressure medicines বন্ধ করার নির্দেশ থাকতে পারে (doctor advice অনুযায়ী)
Sample collection-এর আগে posture নির্দেশনা follow করুন
Stress ও heavy exercise এড়িয়ে চলুন
