Open AccessInverse Relation between Condition of Heart Failure and Intrathoracic Impedance Measured by Implantable Cardioverter Defibrillator—A case report—
Author(s) -
Matsushita Kohei,
Ishikawa Toshiyuki,
Sumita Shinichi,
Kobayashi Tsukasa,
Ogawa Hideyuki,
Inoue Noriko,
Matsumoto Katsumi,
Taima Minoru,
Nakazawa Ichirou,
Sugano Teruyasu,
Ishigami Tomoaki,
Uchino Kazuaki,
Kimura Kazuo,
Umemura Satoshi
Publication year - 2005
Publication title -
journal of arrhythmia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.463
H-Index - 21
eISSN - 1883-2148
pISSN - 1880-4276
DOI - 10.1016/s1880-4276(05)80019-5
Subject(s) - medicine , cardiology , heart failure , ejection fraction , dilated cardiomyopathy , shock (circulatory) , ventricular fibrillation , implantable cardioverter defibrillator
The patient was a 78‐year‐old man with dilated cardiomyopathy. His cardio‐thoracic ratio was 60.4% and left ventricular ejection fraction (LVEF) was 33%. He had been repeatedly admitted for congestive heart failure. He underwent implantation of an implantable cardioverter‐defibrillator (ICD) for ventricular fibrillation. We compared the values of BNP and shock impedance stored by the ICD. The correlation coefficient (p‐value) between BNP and shock impedance was −0.700 (p < 0.0005), increase of BNP and shock impedance was −0.778 (p < 0.0001), percent increase of BNP and shock impedance was −0.767 (p < 0.0005). In conclusion, there is an inverse relation between BNP and shock impedance, and measurements of shock impedance may be useful in the management of congestive heart failure.