28
Participants
Start Date
April 30, 2013
Primary Completion Date
March 1, 2018
Study Completion Date
March 1, 2018
Brachial artery catheter
A catheter will be placed in the brachial artery by a physician on the study day.
Acetylcholine
Acetylcholine will be infused into the brachial catheter while blood flow levels in the forearm are measured. Acetylcholine will be infused at the following doses: 1.0, 2.0, 4.0, and 8.0 ug/100 ml tissue/min for 2 minutes each.
Nitroprusside
Nitroprusside will be infused into the brachial catheter while blood flow levels in the forearm are measured. Nitroprusside will be infused at the following doses: 0.25, 0.5, 1.0, and 2.0 ug/100 ml tissue/min for 2 minutes each.
Norepinephrine
Norepinephrine will be infused into the brachial catheter while blood flow levels in the forearm are measured. Norepinephrine will be infused at the following doses: 1.0, 2.0, 4.0, and 8.0 ug/100 ml tissue/min for 2 minutes each.
Nitroprusside and phenylephrine
A single dose of nitroprusside (100 ug) will be infused through an IV; one minute later, a single dose of phenylephrine (150 ug) will be infused.
Mayo Clinic, Rochester
Lead Sponsor
Mayo Clinic
OTHER