title: The association of dipyridamole side effects with hemodynamic parameters, ECG findings, and scintigraphy outcomes.
abstract: Dipyridamole has extensively been administered as a substitute for physical activity in cardiovascular assessment. The aim of this study was to evaluate the association of dipyridamole side effects with hemodynamic oscillations, scanning results, and electrocardiography (ECG) findings.
  
  
  METHODS
  Overall, 590 patients referred to the nuclear medicine center for myocardial perfusion imaging were evaluated for adverse dipyridamole effects concurrent with a low level of exercise. Before and during dipyridamole infusion, the patients' vital signs, electrocardiogram, heart rate, systolic blood pressure, and diastolic blood pressure were monitored; all patients underwent stress-rest (99m)Tc-sestamibi gated SPECT using a 2-d protocol.
  
  
  RESULTS
  Eighty-eight patients (14.9%) experienced at least one side effect during dipyridamole infusion, and abnormal ECG and scan results were observed in 32.4% and 48.6% of patients, respectively. We observed a positive correlation between a higher incidence of chest discomfort, headache, and dyspnea and abnormalities on ECG and myocardial perfusion imaging. In addition, these 3 side effects were also associated with a higher postinfusion heart rate, lower preinfusion systolic blood pressure, and lower postinfusion diastolic blood pressure. There were significant differences between pre- and postinfusion heart rate, preinfusion systolic blood pressure, and postinfusion diastolic blood pressure among patients with or without side effects, whereas no significant difference was observed in any of the hemodynamic parameters between patients with normal and abnormal ECG results or myocardial perfusion imaging results.
  
  
  CONCLUSIONS
  This study demonstrated a correlation between hemodynamic variables and side effects but not with imaging findings or ECG findings.
authors: Department of Nuclear Medicine, 5th Azar Hospital, Golestan University of Medical Science, Gorgan, Iran.
authors: Hamid
authors: H
authors: Javadi
authors: Malihnaz
authors: M
authors: Shariati
authors: Mehdi
authors: M
authors: Mogharrabi
authors: Isa Neshandar
authors: IN
authors: Asli
authors: Sara
authors: S
authors: Jallalat
authors: Aref
authors: A
authors: Hooman
authors: Mohammad
authors: M
authors: Seyedabadi
authors: Majid
authors: M
authors: Assadi
mesh_terms: D000368:Aged; D016477:Artifacts; D004176:Dipyridamole / Q000009:adverse effects*; D004562:Electrocardiography; D006439:Hemodynamics / Q000187:drug effects*; D006801:Humans; D008875:Middle Aged; D011877:Radionuclide Imaging
chemical_list: D004176:Dipyridamole