Characterization of optimal resting tension in human pulmonary arteries

Figure 3 Measurement of Optimal Resting Tension using Multi-wire Myograph (A) and Organ Bath system (B). A: Total 12 PA rings from four patients were used to perform the experiment. Increasing the resting tension from 1.0 gf to 1.6 gf significantly augmented the 40 mmol/L KCl induced active tension. Increasing the active tension from 1.6 to 2.0 gf initially plateaued off than decreased the 40 mmol/L KCl induced response; B: Total 8 PA rings from four patients were used to perform the experiment. Increasing the resting tension from 1.0 to 1.6 gf significantly augmented the 40 mmol/L KCl induced active tension. Increasing the active tension from 1.6 to 2.0 gf either decreased the 40 mmol/L KCl induced response.