title: Inexpensive simple monitoring techniques.
mesh_terms: D001795:Blood Pressure Determination / Q000295:instrumentation*; D002404:Catheterization / Q000295:instrumentation / Q000379:methods; D002496:Central Venous Pressure; D003365:Costs and Cost Analysis; D004469:Economics, Hospital; D006334:Heart Function Tests; D006801:Humans; D008365:Manometry / Q000295:instrumentation; D008991:Monitoring, Physiologic; D009339:Needles; D011651:Pulmonary Artery; D013350:Subclavian Vein; D013594:Syringes; D014683:Vena Cava, Superior