Pulsed Doppler echocardiographic detection of the origin of musical murmurs in a case of pacemaker implantation.
We report a case of systolic and diastolic musical murmurs that developed 4 years after DDD pacemaker implantation. Echocardiographic examination disclosed no evidence of serious pacemaker-related complications. Pulsed Doppler examination with a sample volume at the right ventricular portion of a pacemaker lead showed prominent harmonic signals. The timing of the signals was consistent with that of musical murmurs. We considered vibration of the pacemaker lead as a possible origin of the musical murmurs. Systolic and diastolic musical murmurs can develop without serious cause in a patient with a transvenous pacemaker. Pulsed Doppler examination was useful in detecting the origin of musical murmurs.
Division of Clinical Laboratory, Kobe General Hospital, 4-6 Minatojima-Nakamachi, Chuo-ku, 650-0046, Kobe, Japan.
Toshiko
T
Konda
Division of Cardiology, Kobe General Hospital, 4-6 Minatojima-Nakamachi, Chuo-ku, 650-0046, Kobe, Japan.
Kazuaki
K
Tanabe
Division of Clinical Laboratory, Kobe General Hospital, 4-6 Minatojima-Nakamachi, Chuo-ku, 650-0046, Kobe, Japan.
Toshikazu
T
Yagi
Division of Clinical Laboratory, Kobe General Hospital, 4-6 Minatojima-Nakamachi, Chuo-ku, 650-0046, Kobe, Japan.
Youko
Y
Fujii
Division of Clinical Laboratory, Kobe General Hospital, 4-6 Minatojima-Nakamachi, Chuo-ku, 650-0046, Kobe, Japan.
Kazuyo
K
Ui
Division of Clinical Laboratory, Kobe General Hospital, 4-6 Minatojima-Nakamachi, Chuo-ku, 650-0046, Kobe, Japan.
Junichi
J
Kawai
Division of Cardiology, Kobe General Hospital, 4-6 Minatojima-Nakamachi, Chuo-ku, 650-0046, Kobe, Japan.
Tomoko
T
Tani
Division of Cardiology, Kobe General Hospital, 4-6 Minatojima-Nakamachi, Chuo-ku, 650-0046, Kobe, Japan.
Sigefumi
S
Morioka
echocardiography; harmonic signal; musical murmurs; pacemaker implantation; pulsed Doppler