Does the intracoronary pressure differ according to two types (diffuse or focal) of coronary spasm?

Figure 1 The minimal distal pressure (Pd)/aortic pressure (Pa) and reduction in Pd/Pa during spasm provocation test according to the types of coronary spasm. A: Shows the minimal Pd/Pa during the spasm provocation test (SPT); B: Shows the delta Pd/Pa during the SPT in the diffuse, focal spasm, and spasm-negative vessels. In both panels, each value was lower in vessels with diffuse and focal spasms than in spasm-negative vessels (P < 0.01). Furthermore, each value was lower in vessels with focal spasms than in those with diffuse spasms (P < 0.01). Pa: Aortic pressure; Pd: Distal pressure.