"The evidence to support the accuracy of the MAT is weak; both the original Allen test (which was superseded by the MAT) and the MAT itself exhibit low sensitivity for evaluation of collateral circulation 1,3. One systematic review concluded that the MAT lacks sufficient diagnostic validity to support its use in screening collateral circulation deficits of the hand. It was also found to be a poor and unreliable predictor of hand ischaemia post-arterial puncture3."
"The evidence to support the accuracy of the MAT is weak; both the original Allen test (which was superseded by the MAT) and the MAT itself exhibit low sensitivity for evaluation of collateral circulation 1,3. One systematic review concluded that the MAT lacks sufficient diagnostic validity to support its use in screening collateral circulation deficits of the hand. It was also found to be a poor and unreliable predictor of hand ischaemia post-arterial puncture3."
Expected headings
"Evidence"
"The modified Allen test (MAT) may be used to clinically assess the patency and completeness of the superficial palmar arch 1,2. Its classic use is in assessing for sufficient collateral flow to the hand, to avoid ischaemia in the setting of radial artery puncture, cannulation, catheterisation or radial artery harvest for coronary revascularisation 2."
"The evidence to support the accuracy of the MAT is weak; both the original Allen test (which was superseded by the MAT) and the MAT itself exhibit low sensitivity for evaluation of collateral circulation 1,3. One systematic review concluded that the MAT lacks sufficient diagnostic validity to support its use in screening collateral circulation deficits of the hand. It was also found to be a poor and unreliable predictor of hand ischaemia post-arterial puncture3."
"In most patients, the MAT is rarely performed; ultrasound is generally preferred for achieving the same purpose with greater sensitivity in patients requiring coronary revascularisation 2."
"History and etymology"