Sahak Echo
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ایکو علمی خپرونه dr. Shahmahmood Sahak trainer of internal medicine in Rabia Balkhi hospital. Turkiye high specialization hospital Ankara Turkey.
Echocardiography certificate from universitate clinicum Gutingen Germany. Nanfang hospital Guangzhou China. echo practice since 2005. Echo trainer since 2005.
30/12/2025
𝐀𝐨𝐫𝐭𝐢𝐜 𝐑𝐨𝐨𝐭 𝐈𝐧𝐝𝐞𝐱
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Calculated by dividing the observed aortic root dimension (Aorta O) by the BSA.
The aortic root ratio (ARR) of observed (Aorta O)
to expected (Aorta E) aortic root diameters
can be calculated by dividing the observed by
the expected diameter.
⛱ ARI = AortaO / BSA
🏖 O-E ARR = Aorta O / Aorta E
🏜 Z Score = {Aorta O−Aorta E} / SD
𝙎𝙞𝙩𝙚𝙨 𝙛𝙤𝙧 𝙢𝙚𝙖𝙨𝙪𝙧𝙚𝙢𝙚𝙣𝙩𝙨 𝙤𝙛
𝙩𝙝𝙚 𝙖𝙤𝙧𝙩𝙞𝙘 𝙧𝙤𝙤𝙩 𝙖𝙣𝙙 𝙖𝙨𝙘𝙚𝙣𝙙𝙞𝙣𝙜 𝙖𝙤𝙧𝙩𝙖
1. 𝘼𝙤𝙧𝙩𝙞𝙘 𝙫𝙖𝙡𝙫𝙚 𝙖𝙣𝙣𝙪𝙡𝙪𝙨
2. 𝙎𝙞𝙣𝙪𝙨𝙚𝙨 𝙤𝙛 𝙑𝙖𝙡𝙨𝙖𝙡𝙫𝙖
3. 𝙎𝙞𝙣𝙤𝙩𝙪𝙗𝙪𝙡𝙖𝙧 𝙟𝙪𝙣𝙘𝙩𝙞𝙤𝙣
4. 𝙋𝙧𝙤𝙭𝙞𝙢𝙖𝙡 𝙖𝙨𝙘𝙚𝙣𝙙𝙞𝙣𝙜 𝙖𝙤𝙧𝙩𝙖 .
Definitions
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Height Height (cm or in)
Weight Weight (kg or lb)
Aorta O Aorta Observed (mm)
Location Location
BSA Body Surface Area (m2)
ARI (BSA) Aortic Root Indexed to BSA(mm/m2)
Aorta E Aorta Expected (mm)
O-E ARR. O-to-E Aortic Root Ratio
Z Score Z Score
Copy from CCU-ECHO
23/11/2025
McConnell's sign for Pulmonary embolism
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