Pneumoplethysmographic examinations have also been classified as useful, noninvasive examinations for objectifying an arterial circulatory disturbance of the penile vessels (, Fig. 3.12). Using a tourniquet and measuring cuff placed around the patient's penis, this examination records pulse-synchronous volume changes in the penis as venous outflow is throttled, which are reflected in characteristic curves (Fig. 3.13). Although a correlation to angiographic findings has been described, the method can at best be classified as a grossly orienting examination method. It offers no significant advantages over Doppler ultrasonography according to SKAT and has therefore not found widespread use.
Fig. 3.12. Pneumoplethysmograph with tourniquet and measuring cuff.
Fig. 3.13. Penile plethysmogram, normal findings (upper curve), arterial circulatory disturbance (lower curve).