Acute myocardial infarction associated with blood transfusion: case report and literature review.

A 62-year old patient with a history of chronic anemia associated with malabsorption secondary to short gut syndrome, experienced acute chest pain the second hour after the transfusion of a crossmatch-compatible erythrocyte suspension. His electrocardiogram (ECG) revealed widespread ST-segment depressions and he had an elevated troponin level. Laboratory findings and physical examination did not indicate the presence of immunological or non-immunological blood transfusion reactions. Cardiac catheterization was performed and showed angiographically non-obstructive, atherosclerotic plaques and the absence of vasospasm or thrombus formation. Following antiischemic therapy his symptoms resolved completely. The ECG obtained 24 hours after the emergence of chest pain demonstrated normal sinus rhythm with no ST-T wave changes. We present a rare case of acute myocardial infarction induced following a blood transfusion. To the best of our knowledge, a few cases of acute myocardial infarction associated with blood transfusion have been formally recorded in the medical literature and the clinical experience regarding such cases is indeed quite limited. The present case is reviewed in the context of the relevant literature as a practical resource for clinical practice.

Evaluation of the relationship between arterial blood pressure, aortic stiffness and serum endothelin-1 levels in patients with essential hypertension.

This study has attempted to evaluate the relationship between aortic stiffness, blood pressure (BP) and serum endothelin-1 (ET-1) levels in patients with essential HT. Totally 152 subjects, consisting of 103 patients diagnosed with HT at least 1 year previously and 49 healthy individuals, were enrolled in this study. They were subdivided, on the basis of BP measurements made at home, into three groups as the hypertensives with dysregulated BP (n = 56), the hypertensives with regulated BP (n = 47) and the normotensive controls (n = 49). Statistically significant differences were observed between the three groups with respect to aortic elasticity parameters (p < 0.01 for aortic strain, aortic distensibility and aortic stiffness). Serum ET-1 levels in the three groups were similar (p = 0.101), but a significant correlation was observed between the ET-1 values and the aortic elasticity parameters (p = 0.004). Alteration of the aortic elasticity parameters in patients with HT not only correlates with the serum ET-1 levels indicating endothelial dysfunction but also gives direct clues about status of BP regulation.

Can Impaired Elasticity of Aorta Predict the Success of Vardenafil Treatment in Patients with Erectile Dysfunction?

Objective. Vardenafil is used in treatment of erectile dysfunction (ED) but reveals variable clinical outcomes. Here, we aimed to evaluate the role of aortic elasticity in predicting vardenafil success among patients with ED. Methods. Sixty-one consecutive male subjects with primary ED and indication for vardenafil treatment were included. All subjects fulfilled 5-item version of the International Index of Erectile Function (IIEF-5) before the vardenafil treatment. Pretreatment aortic stiffness index (ASI) and aortic distensibility (AD) were obtained echocardiographically. Following two-month vardenafil treatment, the patients were reevaluated with IIEF-5. Pretreatment, posttreatment, and ΔIIEF-5 scores and ASI values were compared. Results. Average age was 54 ± 8 years. Pretreatment and posttreatment IIEF-5 and ΔIIEF-5 scores were 9.1 ± 2.5; 18.5 ± 2.3; and 9.4 ± 3, respectively. Mean ASI and AD values were 3.10 ± 0.54 and 4.13 ± 2.55 1/(10(3) × mmHg) accordingly. ASI value of severe pretreatment ED (n = 15) was significantly higher than that of mild-moderate pretreatment ED (n = 12) (p < 0.001). All pretreatment IIEF-5 scores increased significantly compared to posttreatment IIEF-5 scores (p < 0.001). ASI values were significantly correlated to pretreatment IIEF-5 scores (p < 0.001) and ΔIIEF-5 value (p < 0.001) but not to posttreatment IIEF-5 score. Conclusion. Aortic elasticity was impaired in accordance with degree of ED. The subjects with higher ASI values obtained more benefits from vardenafil.

Cardiac factors affecting the success of vardenafil in erectile dysfunction.

BACKGROUND/AIM: To evaluate the predictability of vardenafil success in patients with erectile dysfunction (ED) by using cardiological tests. MATERIALS AND METHODS: Patients diagnosed with ED who did not benefit from lifestyle changes (n = 68) were evaluated with an abridged 5-item version of the International Index of Erectile Function (IIEF-5). The pretreatment and posttreatment IIEF-5 scores were compared with pretreatment data obtained from cardiological examinations. RESULTS: When pretreatment scores were compared with test parameters, mitral flow E/A ratio and tissue Doppler imaging (TDI) E'/ A', exercise test duration, exercise capacity in MET, and percentage of maximum heart rate were found to be statistically significant. Furthermore, there was a significant negative correlation between mitral flow E/A ratio, TDI E'/A', exercise test duration, exercise capacity in MET, and the difference in post- and pretreatment IIEF-5 scores. CONCLUSION: As a diastolic function indicator, TDI E'/A' positively correlates with pretreatment IIEF-5 scores and negatively correlates with the beneficial effect of vardenafil treatment. As a result, the cardiological status of the patient correlates with individual IIEF-5 scores, and it seems to be useful in predicting vardenafil success.

High-amplitude left ventricular pacing in cardiac resynchronization therapy: an alternative way to increase response rate in non-responders.

PURPOSE: This study compared patients who underwent cardiac resynchronization therapy (CRT) by high-amplitude left ventricular (LV) pacing with those who underwent CRT by standard LV pacing. METHODS: We included 32 CRT patients with ejection fraction (EF) ≤35%, QRS time ≥120 ms, and New York Heart Association (NYHA) class III/IV symptoms of heart failure despite optimal medical treatment. These patients were evaluated clinically and echocardiographically before, three and six months after CRT. At the 3(rd) month, the LV pulse amplitude value was set high at 5 volt for 16 patients [high-amplitude Group (HAG)], while for the other 16 patients, it was reduced to at least twice the threshold value at ≤2.5 volt [low-amplitude group (LAG)]. RESULTS: Clinical and echocardiographic response rates of HAG and LAG after CRT were similar in the 3(rd) and 6(th) month. In both groups, increase in LVEF and decrease in LV ESV in the 3(rd) and 6(th) month were statistically significant compared to those before CRT, and NYHA class and end-diastolic volume (EDV) was significantly reduced in the 6(th) month compared to those before CRT. However, NHYA class and EDV continued to reduce significantly in HAG from the 3(rd) to the 6(th) month (P<0.05), while the decrease in LAG was not significant (P>0.05). The rate of mitral regurgitation (MR) was reduced significantly in HAG in the 6(th) month compared to that before CRT, while the decrease in LAG was not significant (P<0.05; P>0.05 respectively). CONCLUSIONS: CRT by high-amplitude LV pacing was more effective according to clinical and echocardiographic evaluations. It should be considered as an alternative in non-responsive patients.

A new electrocardiographic marker of myocardial reperfusion in patients with acute ST-segment elevation myocardial infarction treated with primary percutaneous intervention: the value of QRS duration.

AIMS: Although ischaemia-induced QRS complex changes have been described previously, their relation with reperfusion status is not clear. We aimed to investigate the relation of QRS duration with reperfusion at tissue level compared to myocardial blush in patients with acute myocardial infarction who underwent successful primary percutaneous coronary angioplasty. METHODS AND RESULTS: One hundred and forty-eight patients were enrolled. Based on the post-angioplasty myocardial blush grade (MBG), patients were divided into reperfusion (grades 2 and 3) and impaired reperfusion (grades 0 and 1) groups. Although the two groups did not differ in terms of admission QRS duration (81±17 vs. 79±15 msec, p=0.473), the patients in the impaired reperfusion group had a significantly longer QRS duration both at immediate post-angioplasty (78±18 vs. 68±17 msec, p=0.001) and at the 60th minute ECG (77±17 vs. 60±17 msec, p<0.001). Patients in the impaired reperfusion group revealed significantly less narrowing of QRS duration in the post-angioplasty 60th minute ECG (6±5 vs. 20±5 msec, p<0.001) when compared to the patients in the reperfusion group. After adjusting all variables, QRS narrowing in the 60th minute ECG was determined as an independent electrocardiographic predictor of reperfusion (OR:1.39, 95% CI: 1.25-1.54, p<0.001). CONCLUSIONS: We demonstrated that QRS duration is a strong indicator of myocardial reperfusion status.