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When there is angina or heart failure, the doctor may need to determine whether the heart has enough reserve to safely carry out the work necessary for sexual activity by performing cardiac treadmill stress testing. What are vacuum devices? Mechanical vacuum devices cause an erection by creating a vacuum around the penis that draws blood into the penis, engorging it, and expanding it. One variation of the vacuum device involves a semi-rigid rubber sheath that is placed on the penis and remains there after attaining erection and during intercourse. What Causes Male Sexual Problems? Psychological causes: These include work-related stress and anxiety, concern about sexual performance, marital or relationship problems, depression, feelings of guilt, and the effects of a past sexual trauma. Sildenafil can cause hypotension (abnormally low blood pressure that can lead to fainting and even shock) when given to patients who are taking nitrates (for heart disease). Therefore, patients taking nitrates daily should not take sildenafil. Nitrates are used most commonly to relieve angina (chest pain due to insufficient blood supply to the heart muscle because of narrowing of the coronary arteries); these include nitroglycerine tablets, patches, ointments, sprays, and pastes, as well as isosorbide dinitrate, and isosorbide mononitrate. Other nitrates such as amyl nitrate and butyl nitrate also are found in some recreational drugs called "poppers." Several other medications are being studied for treating erectile dysfunction; these include IC351 (another PDE5 inhibitor), sublingual apomorphine, and the combination of yohimbine and L-arginine. Scientists also are researching gene therapy to treat erectile dysfunction. Cheap cialis Other factors leading to erectile dysfunction are diabetes mellitus (causing neuropathy). Drugs (anti-depressants (SSRIs) and nicotine are most common) Cheap cialis How Is Male Sexual Dysfunction Treated? Many cases of sexual dysfunction can be corrected by treating the underlying physical or psychological problems. Treatment strategies may include the following: Mechanical aids: Aids such as vacuum devices and penile implants may help men with erectile dysfunction. order viagra online overnight viagra online pharmacy cheap levitra online no prescription buy levitra Compare online PROPECIA offers. Choose the best price and package propecia online