gated myocardial perfusion spect in patients with left bundle block but having low probability of coronary artery disease; as compared to the patients with normal electrocardiogram

نویسندگان

seyed hashem danesh-sani

seyed rasoul zakavi

ramin sadeghi

mansoure fatemi

maryam torabian-kakhki

چکیده

introduction: we aimed to investigate of effect of left bundle branch block (lbbb) on perfusion and functional parameters in dipyridamole tc99m-mibi gated myocardial perfusion spect which may be helpful in interpretation of myocardial perfusion imaging. methods: we studied 70 patients with low pre-test probability of coronary artery disease in two groups:  35 patients with lbbb and  35 subjects with normal ecg. both groups underwent two-day dipyridamole stress–rest tc99m-mibi gspect. results: from 35 patients with lbbb, 6, 12, and 3 patients had reversible, fixed and partially reversible defects respectively. in 35 patients with lbbb, 8 (22.9%), 6(17.1%)  15( 42.9%) and 10 (28.6%) patients had perfusion defects in the apicoseptal,  mid-anterior segments , mid-anteroseptal and mid-inferoseptal segments respectively. there was significant difference in tid ratio between two groups:  lbbb group: 1.07±0.21 and control group: 0.96±0.14 (p=0.01). there was a significant difference in end systolic volume and ejection fraction between lbbb patients group and control group, while no significant difference was noticed in end-diastolic volume. nineteen, 14 and 2 from 35 patients with lbbb had normal lv wall motion, paradoxical septal wall motion, and septal hypokinesia respectively. conclusion: false positive septal, anterior and apicoseptal perfusion abnormalities are frequently seen on tc99m-mibi gspect, in patients with lbbb without cad. moreover reversible defects are frequently seen with tc99m-mibi. even tc99-mibi and vasodilator stress do not increase diagnostic accuracy to clinically useful levels. lower systolic performance and higher tid ratio could be seen in these patients.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Gated myocardial perfusion SPECT in patients with left bundle block but having low probability of coronary artery disease; as compared to the patients with normal electrocardiogram

Introduction: We aimed to investigate of effect of left bundle branch block (LBBB) on perfusion and functional parameters in dipyridamole Tc99m-MIBI gated myocardial perfusion SPECT which may be helpful in interpretation of myocardial perfusion imaging. Methods: We studied 70 patients with low pre-test probability of coronary artery disease in two groups:  35 patients with LBBB and  35 subject...

متن کامل

Gated 99mTc-MIBI myocardial perfusion SPECT in patients with right bundle branch block but without evidence of coronary artery disease

Introduction: We aimed to investigate the effect of right bundle branch block (RBBB) on perfusion and functional parameters in dipyridamole stress/rest Tc99m-MIBI gated myocardial perfusion SPECT (GSPECT) which may be helpful in interpretation of myocardial perfusion imaging. Methods: We studied 73 patients with low pre-test likelihood of coronary artery disease in two groups:  38 patients wit...

متن کامل

gated 99mtc-mibi myocardial perfusion spect in patients with right bundle branch block but without evidence of coronary artery disease

introduction: we aimed to investigate the effect of right bundle branch block (rbbb) on perfusion and functional parameters in dipyridamole stress/rest tc99m-mibi gated myocardial perfusion spect (gspect) which may be helpful in interpretation of myocardial perfusion imaging. methods: we studied 73 patients with low pre-test likelihood of coronary artery disease in two groups:  38 patients with...

متن کامل

The prognostic value of stress/rest gated myocardial perfusion SPECT in patients with known or suspected coronary artery disease

Introduction:Gated myocardial perfusion SPECT has diagnostic and prognostic values in coronary artery disease (CAD). We tried to determine prognostic values of the left ventricular perfusion & functional indices as well as transient left ventricular dilation (TID) derived from gated myocardial perfusion SPECT. Methods: 1820patients who underwent gated myo...

متن کامل

Gated Tc-MIBI myocardial perfusion SPECT in patients with right bundle branch block but without evidence of coronary artery disease

Introduction: We aimed to investigate the effect of right bundle branch block (RBBB) on perfusion and functional parameters in dipyridamole stress/rest Tc99m-MIBI gated myocardial perfusion SPECT (GSPECT) which may be helpful in interpretation of myocardial perfusion imaging. Methods: We studied 73 patients with low pre-test likelihood of coronary artery disease in two groups: 38 patients with ...

متن کامل

Nicorandil effect on myocardial perfusion in patients with slow coronary flow phenomenon assessment by gated myocardial perfusion SPECT

Introduction:Patients with the coronary slow flow phenomenon (SCF) frequently experience angina episodes. The purpose of this study was to determine efficacy of nicorandil in myocardial perfusion in patients with SCF. Methods: Twenty patients (50.85 ± 12.96 y) with SCF were studied.  We evaluate coronary slow flow according to protracted thrombolysis in m...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
iranian journal of nuclear medicine

ناشر: tehran university of medical sciences

ISSN 1681-2824

دوره 21

شماره 1 2013

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023