In clinical practice, some patients need to undergo some relevant auxiliary examinations or tests to help diagnose the etiology. "However, not every patient with impotence must undergo every examination, otherwise it will not only cause mental stress and pain to the patient, but also impose a burden on the patient's economy, so it should be carried out selectively.".
(1) Laboratory examination
① Blood examination: Blood examination includes examination of peripheral blood, such as blood routine and platelet tests, as well as laboratory examination of venous blood, including liver and renal function, blood electrolytes, blood glucose, blood lipids, blood T3, T4, plasma cortisol, and sexual hormones (such as FSH, LH, and PRL).
② Urine examination: urine routine, urine sediment, urine flow rate, urine 17-ketosteroids, urine 17-hydroxysteroids, urine creatinine, etc.
③ Laboratory examination of semen.
Through laboratory examination, we can know whether there are urinary diseases, prostatitis, diabetes, adrenal cortex hyperfunction or hypofunction, thyroid dysfunction and other diseases.
(2) Neurological examination: to distinguish functional and organic impotence.
(3) Psychological examination: Conduct psychological surveys and Q&A scores to determine whether it is functional impotence.
(4) Night erection test: including stamp test, circumference measurement, penis volume tracing, etc.
(5) Penile blood pressure measurement: Normal penis blood pressure is lower than cerebral artery blood pressure, with a difference of 266kPa.
(6) Penile pulse volume measurement: can understand whether there is vascular disease.
(7) Penile blood flow measurement: The blood flow of patients with impotence decreases when the penis is erect.
(8) Doppler ultrasound examination of the penis artery: determine the examination method for vascular impotence.
(9) Drug induced penile erection test: used to identify vascular impotence.
(10) Penile arteriography: Examining the function of internal pudendal arteries.
(11) Cavernography of the penis.
(12) Electromyography measurement of bulbocavernous muscle reflex: examination for the diagnosis of neurological impotence.
(13) Measurement of bladder pressure volume: Observe whether the bladder pressure volume curve is abnormal.
For patients suspected of suffering from impotence, detailed medical history should be inquired, physical examination should be carefully conducted, and relevant laboratory tests should be combined.