Figure 2 (A, B) Assessment of impedance parameters using impedance cardiography in 2 patients with acromegaly. Despite normal BP values (A, B), the hemodynamic profile indicates vasoconstriction disorders, increased thoracic fluid content, and reduced indicators of the heart’s pump function. ACI – acceleration index; BP – blood pressure; CI – cardiac index; CO – cardiac output; EKG – electrocardiographic curve; HI – Heather index; HR – heart rate; IKG – first derivative of the bioimpedance curve; IMP – bioimpedance curve; LCWI – left cardiac work index; MBP – mean blood pressure; PP – pulse pressure; SI – stroke index; STR – systolic time ratio; STRI – systolic time ratio index; SV – stroke volume; SVRI – systemic vascular resistance index; TACI – total artery compliance index; TFC – thoracic fluid content; VI – velocity index. Microsoft Paint 3D, version 2022, Microsoft Windows 10 Pro.