Hi welcome to the health care magic For emphysema diagnosis main single most investigation is spirometry..... For emphysema medical as well as surgical management available Treatment done as follow... -bronchodilator and steroid combination inhaler like Foracort -for excess cough mucolytic agents -pulmonary exercises beneficial -breathing exercises good to perform -avoid smoking -if needed in severe case oxygen therapy might needed -if needed surgical management done to reduce lung volume For giving I. V injections any suitable vein that leads less discomfort can be choosen... Usually hand and arm vein can be selected.. Take care Hope your concern solved