Atrioventricular Block: A Heralding Sign of Cardiac Allograft Rejection.

Heart transplantation is the treatment of choice for those with end-stage heart failure. However, despite improvements in immunosuppressive treatment, patients are at significant risk of allograft rejection, especially early after transplantation. Any changes in patient's heart condition including reduced left ventricular ejection fraction, arrhythmia and any types of blocks need attention. Herein we report on a 29-year-old man who underwent heart transplantation 5 years before due to dilated cardiomyopathy. He was on immunosuppressive therapy and was good until one week before his admission, when he felt palpitation. Electrocardiography during palpitation showed a second-degree AV-block with heart rate of 60 beats/min. Echocardiography showed good left ventricular systolic function with no regional wall motion abnormality. The patient referred for coronary angiography and endomyocardial biopsy. The angiography was normal. The biopsy showed rejection compatible with ISHLT grade 2R. After treating the patient with 1.5 g methylprednisolone, the symptoms relieved and the block resolved. Bradycardia and second-degree AV-block late after heart transplantation could be a sign of cardiac allograft rejection and need more evaluation, especially endomyocardial biopsy.

Asymptomatic mycotic aneurysm of ascending aorta after heart transplantation: a case report.

Mycotic pseudoaneurysm and aneurysm of the ascending aorta is a very rare and potentially fatal complication of heart transplantation. It usually presents with fever, chest pain, dyspnea, or constitutional symptoms. Most reports in the literature are about mycotic pseudoaneurysm, but mycotic aneurysm is rarer. Herein we report a 39-year-old man in who had an asymptomatic mycotic aneurysm of the ascending aorta developed late (1 year) after orthotopic heart transplantation. There was no history of previous mediastinitis or any other important infection. He underwent an uneventful replacement of the ascending aorta.

Comparing results of digital photoplethysmography in two groups of chronic obstructive pulmonary disease patients with and without high pulmonary artery pressure.

BACKGROUND: Digital photoplethysmography (D-PPG) is a newly introduced method of optical screening of deep vein thrombosis (DVT) by recording changes in the size of limb due to tissue fluid. OBJECTIVES: The objective of this study is to assess the effect of high pulmonary artery pressure (PAP) and consequently increased venous system pressure on D-PPG test results. METHODS: Forty-five patients with and 45 patients without PAP pressure were enrolled in the study and divided into two groups. All the patients had a history of chronic obstructive pulmonary disease (COPD). D-PPG test was performed for both legs of all the patients and the results of the two groups were compared. Also, all patients underwent duplex sonography for ruling out DVT. RESULTS: Using venous refilling time (RT) of <22 s as the optimal cut-off point, it was found that 32 (35%) legs of patients with and 39 (43%) legs of patients without high PAP had positive D-PPG test. Although the rate of positive D-PPG test was higher in patients with high PAP, this was not statistically significant (P = 0.28). Moreover, overall correlation between RT and venous pump detected by D-PPG and PAP was r = -0.11 (P = 0.2) and r = -0.01 (P = 0.6), respectively. CONCLUSION: Our results showed that the rate of positive D-PPG test results is slightly higher in patients with pulmonary hypertension, but this difference is not statistically significant. Therefore, increased PAP could be excluded as a confounding factor of D-PPG test.