This poster offers a basic level of understanding of ABGs for medical students. I have also made an ID-card-sized version which can be easily used on the ward. Students can work around the table, looking at pH, then CO2 and then HCO3- and find the answer in the correct box.
A few simple elements are all it takes to bring a bit of Japanese Tea Garden to your design. Natural or understated hardscaping, limited palette and negative space accented by only one focal point from any particular view will achieve this.