In a prospective , parallel-group trial in the emergency department at Odense University Hospital , Odense , Denmark , patients ( @ years ) with a respiratory rate of more than @ per min , oxygen saturation of less than @ % , oxygen therapy , dyspnoea , cough , or chest pain were randomly assigned in a @:@ ratio with a computer-generated list to a standard diagnostic strategy ( control group ) or to standard diagnostic tests supplemented with point-of-care ultrasonography of the heart , lungs , and deep veins ( point-of-care ultrasonography group ) .