When administering Potassium intravenously through a peripheral route, what would be the best choices for vein selection? The worst or contraindicated choices? What type/size of device should be considered/avoided? I'm interested in what might be the generally accepted standards/considerations but am asking because I'm looking at measures to lessen the risk of thrombophlebitis, so any other considerations would be helpful as well. Much appreciation for your thoughtful consideration!