The posterior pericardiotomy. Does it reduce the incidence of postoperative atrial fibrillation after coronary artery bypass grafting?

Atrial fibrillation (AF) is the most common arrhythmia after coronary artery bypass graft surgery (CABG). Posterior pericardiotomy (PP) has been reported toreduce pericardial effusion, AF triggel; and reduce the length of hospital stay and hospital costs without significant complications. A total of 20 patients, diagnosed with coronary artery diseases to be treated by an elective or urgent CABG between August and December 2013, were randomly divided into two groups; 10 patients received PP (PP group) and 10 patients did not receive PP (control group). The incidence ofAF was equal (40% in both groups). Early pericardial effusion was slightly higher in the PP group (PP 70%, control 60%; p = 1.00). The incidence of left pleural effusion and pneumonia were higher in the PP group than in the control. Moreover, one patient in the PP group developed perioperative myocardial infarction (MI) that required intensive care with medication. The duration of ICU stay of the PP group was significantly longer than that of the control group. In conclusion, PP did not reduce the incidence of postoperative AF nor did early pericardial effusion. Rather, PP increased post-operative complications such asperioperative MI, left pleural effusion, and pneumonia resulting in the prolonged ICU stay.

The first reported cases of Q fever endocarditis in Thailand.

We describe the first two reported cases of Q fever endocarditis in Thailand. Both patients were male, had pre-existing heart valve damage and had contact with cattle. Heightened awareness of Q fever could improve diagnosis and case management and stimulate efforts to identify risk factors and preventive measures.