The known correlation between benign prostatic hypertrophy (BPH) and hypertension could be explained by 3 theoretical pathway models. Whether hypertension causes BPH, BPH causes hypertension or the two are caused by a common factor is currently unknown.

In this study it will be investigated whether hypertension is due to the direct effects of infravesical obstruction to urinary outflow in patients with benign prostatic hyperplasia. The approach will be blood pressure measurement in patients who will have a resection of the prostate.

Inclusion Criteria:

• Listed for inguinal hernia repair or hydrocele repair or transurethral resection of the prostate
• signed informed consent

Exclusion Criteria:

• Treatment with antihypertensive medication that has been started within 3 months of inclusion.
• Treatment with antihypertensive medication that has been started after inclusion and before final blood pressure measurements have been obtained 6 months after operation.
• Any reason that the investigator deems that the participant will not comply with follow-up.

Patients on the waiting list for inguinal hernia repair, hydrocele operation, or transurethral resection of the prostate, at St Olavs University Hospital, Department of Surgery, Trondheim, Norway