Category: Ischemia

Symptoms of Patients With Silent Ischemia as Detected by Thallium Stress Testing: Conclusion

In contrast to these findings, in a study similar to ours, dyspnea was reported to be more frequent in those individuals with a positive thallium stress test who did not have chest pains. However, in that study, dyspnea was reported in the context of it being a test-limiting symptom and, therefore, the absence of chest…

Symptoms of Patients With Silent Ischemia as Detected by Thallium Stress Testing: Discussion

As shown in Table 4, scores for breathlessness were the same for the two groups. When this variable was dichotomized, 78 percent in the silent ischemia group reported this symptom in comparison to 84 percent in the angina group, p=NS. Indeed, a lack of specificity for breathlessness was evident for the entire cohort: both the…

Symptoms of Patients With Silent Ischemia as Detected by Thallium Stress Testing: Results

One hundred thirty-six patients of the cohort of 294 satisfied criteria for myocardial ischemia. Forty-three (32 percent) of those having a positive test had pains (chest, back, arm, and/or jaw), the angina group, whereas 93 (68 percent) did not have this symptom, the silent ischemia group. As shown in Table 1, groups were similar for…

Symptoms of Patients With Silent Ischemia as Detected by Thallium Stress Testing: Symptom Score

Blood pressure was measured by mercury sphygmomanometry at the end of each 3-min stage, at intermediate intervals when indicated, at peak exercise, and at 1-min intervals during recovery. The ST segment deviation during exercise (that is, horizontal or downsloping depression or rarely elevation) was measured as the difference between the resting and peak exercise ST…

Symptoms of Patients With Silent Ischemia as Detected by Thallium Stress Testing: Method

The occurrence of myocardial ischemia without chest pains has been referred to as silent (myocardial) ischemia. Because myocardial ischemia produces a complex array of hemodynamic and neurohu-moral effects, even when pain is not experienced, nonanginal symptoms might be expected. Previous studies of silent ischemia have focused on the significance, mechanisms, and prognostic implications of this…