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. Author manuscript; available in PMC: 2012 Apr 1.
Published in final edited form as: Pflugers Arch. 2011 Dec 8;463(4):537–548. doi: 10.1007/s00424-011-1061-z

Figure 4.

Figure 4

Effects of acute β-adrenoceptor stimulation on K+ currents in human atrial cells, and lack of effect of chronic β-blocker therapy. (A) Patients not treated with a β-blocker (n=14-15 cells, 3 patients). (B) Patients treated with a β-blocker (n=11-14 cells, 3-4 patients). CON=control; ISO=superfusion with isoprenaline 1 μM for 90 s. IK1 was measured as inward current at −120 mV. ITO and IKSUS were measured at +60 mV. Values are means±SEM. *=p<0.05 (paired t-test); NS=not significant, versus respective controls.