The Thoracic Outlet Syndrome (TOS) test is designed to test an intermittent loss of perfusion to the patient finger or arm during rest and provocative maneuvers. The test may be performed with a photo-plethysmography (PPG) sensor, PVR cuff sensor, or a Doppler measurement. The test is performed with the patient in a sitting position.
The specialty tests are supported with dedicated pictures that guide the examiner through the examination protocol, and the corresponding reports clearly correspond the measured waveforms to the different protocol steps.
Figure 1 (Page 2) shows bilateral thumb PPG waveforms with arm in positions of rest, symptomatic, hand up, hands up 180°, hands 90° front, hands 90° sides.
Figure 2 (Page 3) shows bilateral thumb PPG waveforms with arm in positions of Adson right, Adson left, costoclavicular, Allen left, and provocative elevation.
The Palmar Arch test is designed to test the patency of palmar arch prior to harvesting radial artery for coronary bypass or creation of arteriovenous fistula for haemodialysis. The test compares finger PPG waveforms pre and post occlusion of radial artery, occlusion of ulnar artery, and occlusion of both radial and ulnar arteries. The test is performed with the patient in a sitting or supine position.
Figure 3 (Page 4) shows bilateral thumb PPG waveforms pre and post radial artery occlusion (top), bilateral 5th finger PPG waveforms pre and post radial artery occlusion (middle), and bilateral thumb PPG waveforms pre and post ulnar artery occlusion (bottom).