Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Randomized, Double Blind, Placebo-controlled Study to Evaluate the Effect of Tadalafil Once Daily for 8 Weeks on Prostatic Blood Flow and Perfusion Parameters in Men With Signs and Symptoms of Benign Prostatic Hyperplasia
Brief Summary: The purpose of this trial is to evaluate the effect of tadalafil 5 milligrams (mg) daily for 8 weeks compared to placebo on prostatic blood perfusion in men with signs and symptoms of Benign Prostatic Hyperplasia (BPH), measured by resistive index (RI) in the prostate transition zone.


Options:
A: Inclusion Criteria

* Present with benign prostatic hyperplasia
* Provide signed informed consent at the screening
* Agree not to use other treatment for Benign Prostatic Hyperplasia, Erectile Dysfunction or Overactive Bladder (including herbal treatments) during the study

Exclusion Criteria

* Have prostatic cancer or are being treated for cancer.
* Any condition that may negatively influence the transrectal ultrasound.
* Are being treated for heart disease with any drug that is called a nitrate (for example, nitroglycerin).
* Any evidence of moderate to severe cardiac disease
* Have had any of the following in the past 90 days: chest pain (called unstable angina or angina) that requires treatment, heart attack also known as myocardial infarction, heart bypass surgery (called coronary artery bypass graft surgery), had a procedure to open up blood vessels in the heart know as angioplasty or stent placement (percutaneous coronary intervention), positive cardiac stress test without effective cardiac intervention.
* Have very high or very low blood pressure.
* Have uncontrolled diabetes.
* Have certain problems with your kidneys, liver, or nervous system.
B: Inclusion Criteria:

* Men 45 years of age or older with benign prostatic hyperplasia (BPH) also referred to as BPH-lower urinary tract symptoms (LUTS) on the disease diagnostic criteria at the start of study.
* Provide signed informed consent at the start of the study.
* Agree not to use any other approved or experimental pharmacologic BPH, overactive bladder (OAB), or erectile dysfunction (ED) treatments anytime during the study.
* Have not taken finasteride therapy for at least 3 months before study drug is dispensed and dutasteride therapy for at least 6 months before study drug is dispensed.
* Have not taken other BPH therapy (including herbal preparations), OAB therapy, ED therapy for at least 4 weeks prior to study drug is dispensed.
* Have LUTS with a total International Prostate Symptom Score (IPSS) greater than or equal to 13 when study drug is dispensed.
* Have reduced urine flow (measured by special toilet equipment).
* Demonstrate compliance with study drug administration requirements.

Exclusion Criteria:

* Treated with nitrates
* Have unstable angina or angina that requires treatment.
* Have had any of the following in the past 90 days: Heart attack, also known as a myocardial infarction (MI); Heart bypass surgery (called coronary artery bypass graft surgery); Had a procedure to open up blood vessels in the heart known as angioplasty or stent placement (percutaneous coronary intervention).
* Have very high or very low blood pressure.
* Have certain neurological conditions associated with bladder problems or injuries to brain or spinal cord within a specified time of starting this study.
* Have uncontrolled diabetes.
* Have prostate cancer, are being treated for cancer.
* Have prostate specific antigen (PSA) greater than 10 nanograms per milliliter (ng/mL) at the start of study.
C: Inclusion Criteria:

* Men 45 years of age or older with Benign Prostatic Hyperplasia (BPH) also referred to as BPH-LUTS \[lower urinary tract symptoms\] based on the disease diagnostic criteria at the start of study.
* Provide signed informed consent at the start of the study.
* Have not taken Finasteride therapy for at least 3 months before study drug is dispensed and Dutasteride therapy for at least 6 months before study drug is dispensed.
* Have not taken other BPH therapy (including herbal preparations), overactive bladder (OAB) therapy, or erectile dysfunction (ED) therapy for at least 4 weeks prior to study drug is dispensed.
* Agree not to use any other approved or experimental pharmacologic BPH, OAB, or ED treatments anytime during the study
* Have LUTS with a Total International Prostate Symptom Score (IPSS) greater than or equal to 13 when study drug is dispensed.
* Have reduced peak urine flow rate when study drug is dispensed (measured by a special toilet equipment).
* Demonstrate compliance with study drug administration requirements.

Exclusion Criteria:

* Treated with nitrates for a cardiac conditions.
* Have unstable angina or angina that requires treatment.
* Have had any of the following in the past 90 days: Heart attack, also known as a myocardial infarction (MI); Heart bypass surgery (called coronary artery bypass graft surgery); Had a procedure to open up blood vessels in the heart known as angioplasty or stent placement (percutaneous coronary intervention).
* Have very high or very low blood pressure
* Have problems with kidneys, liver, or nervous system.
* Have uncontrolled diabetes.
* Have had a stroke or a significant injury to brain or spinal cord.
* Have prostate cancer, are being treated for cancer or have clinical evidence of prostate cancer (Prostate-Specific Antigen \[PSA\] greater than 10 nanograms/milliliter \[ng/ml\] at the start of study).
D: Inclusion Criteria:

* clinical diagnosis of erectile dysfunction (ED)
* lower urinary tract symptoms (LUTS)

Exclusion Criteria:

* previous prostate surgery or invasive intervention for BPH
* active urinary tract disease

Answer: A