Friday, February 02, 2007

Cardiovascular case for MRCP PACES

The patient was an elderly female. She was lying propped up in bed and had an oxygen mask on. The trainees were asked what their impression was at that point.
Breathlessness in a patient with a cardiovascular problem was most likely to be due to left ventricular failure.
The patient was of average height but appeared to be thin. The trainee said that this probably indicated that the patient was cachectic on account of chronic illness.
On examination of the head the only physical sign of note was that the patient had flaring of the alae nasi in keeping with the suspicion of left ventricular failure.
On examination of the hands the trainee noted clubbing. In the context of the cardiovascular system there are few causes of clubbing. In the absence of cyanosis and in an elderly patient who was unlikely to have congenital heart disease (even after operative correction) the chances were the patient had infective endocarditis. There were no other peripheral stigmata of infective endocarditis.
The pulse rate was 80 beats per minute irregular in rhythm and volume indicating atrial fibrillation. Atrial fibrillation made the trainee suspect that the patient was likely to have mitral valve disease.
On examination of the neck it was noted that the jugular venous pressure was elevated and it was predominantly a systolic wave, which resulted in outward distension of the vein. This made the trainee think it was a V wave due to tricuspid regurgitation. A V wave in the context of atrial fibrillation and suspected mitral valve disease would raise the suspicion that the patient had right ventricular involvement secondary to the development of pulmonary hypertension as a consequence of mitral valve disease.
On examination of the praecordium it was noted that there was a midline sternotomy scar. This raised the possibility of valve replacement or bypass grafting.
The apex beat was displaced to the 6th intercostal space in the anterior axillary line. It was thrusting in nature. This would indicate that the left ventricle was dilated and there was diastolic overload. With the suspicion of mitral valve disease already raised on account of atrial fibrillation the most likely diagnosis at the moment was mitral regurgitation.
There was left parasternal heave and a palpable pulmonary second sound best felt at the pulmonary area. This was in keeping with the earlier suspicion that the patient had developed pulmonary hypertension as a consequence of mitral valve disease.
On auscultation of the heart the native first heart sound was replaced by a click indicating a prosthetic mitral valve.
The second heart sound was complicated. At the pulmonary area a loud native heart sound was heard in keeping with pulmonary hypertension. At the left sternal edge a click was heard in keeping with a prosthetic aortic valve.
In early diastole an opening click was heard indicating that the mitral valve was a metal valve.
There was a pan-systolic murmur best heard at the mitral area and this radiated to the axilla confirming our earlier suspicion of mitral regurgitation.
On auscultation of the lung bases fine late inspiratory crepitations were heard in keeping with the earlier suspicion of left ventricular failure.
Diagnosis:
Prosthetic aortic and mitral valves
Mitral regurgitation
Atrial fibrillation, pulmonary hypertension, heart failure
Possibly infective endocarditis