A 70-year-old lady present to the clinic complained of breathlessness on exertion since a month ago. There was no chest pain but she felt palpitation occasionally. On further questioning, she mentioned that she had to sleep on 2 pillows at night and might wake up suddenly due to shortness of breath. She also felt tired easily and noticed some loss of weight. Her appetite was not good nowadays. She had no significant past medical history and family history. She did not smoke nor take alcohol.
On examination, the patient appeared tired ad there was no sign of cyanosis, pallor or jaundice. Her pulse rate was 110bpm, rhythm was irregularly irregular, volume was strong. Her respiratory rate was normal. Blood pressure was 150/70mmHg. JVP was raised. Body temperature was normal.
Examination of the heart showed that her apex beat was slightly displaced to the lateral. On auscultation, there was a ejection systolic murmur. Auscultation of the lung revealed basal crepitation. Abdominal examination showed slight enlargement of the liver, no splenomegaly, kidney not palpable. Peripheral pulses were all palpable, symmetry and strong. There was mild pedal oedema.
ECG showed irregular rhythm with normal QRS complex. There was no pattern suggestive of previous myocardial infarction. Chest X-ray showed signs of pulmonary oedema and cardiomegaly. Blood test was normal except for elevated serum T3, T4 level.
1. What is the most likely clinical diagnosis?
2. What type of irregular rhythm was expected on ECG?