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MRCP Heart
Question | Answer |
---|---|
The right ventricle lies anterior to the | left ventricle |
The tricuspid valve is the most anterior valve of the heart and is the most common to be | a stabbing attack |
The left atrium is the most posterior chamber of | the heart |
the right atrium is just anterior and to the right | of the left atrium. |
The left atrial appendage is not readily seen on transthoracic echocardiography | requires transoesophageal echocardiography. |
The aortic valve is | tricuspid |
internal thoracic artery arises from the | subclavian artery. |
The subscapular artery arises from the ______ and is its ______ branch, eventually ______ with the _______ and ______ arteries. | axillary and is its largest branch, eventually anastomosing with the lateral thoracic and intercostal arteries. |
descending aorta lies behind (posterior to) | the left main bronchus. |
ascending aorta is | anterior to the pulmonary trunk. |
left pulmonary artery | is anterior to the left main bronchus. |
right main bronchus should be beside the left following | bifurcation of the trachea. |
superior vena cava can be found next to the | ascending aorta |
oesophagus is also a posterior structure to | the left main bronchus. |
left atrial enlargement can result in mitral regurgitation by affecting which leaflet? | posterior leaflet |
anterior leaflet is not affected, because of its attachment to | the root of the aorta. |
Basic understanding of coronary anatomy is important as this is predictive of problems following MI. For example: | Basic understanding of coronary anatomy is important as this is predictive of problems following MI. For example: |
the right coronary artery supplies the AV node, so | so heart block following inferior MI is common |
However, heart block following anterior MI is a _________ marker as this indicates a | grave prognostic marker as this indicates a large anterior wall infarct. |
The right coronary system also supplies the _________, hence problems relating to a ________________ are commonly associated with an _________. | right ventricle, hence problems relating to a right ventricular infarct are commonly associated with an inferior MI. |
right coronary artery supplies the ____________ and occlusion causes _______ | inferior myocardium and occlusion causes ST elevation in II, III and aVF. |
Posterior descending artery | Posterior descending artery |
a branch of the right coronary artery in _____ of people (a branch of the circumflex in the remaining population). | 85% |
The concept of coronary dominance refers to which coronary artery supplies | the posterior descending coronary artery. |
85% of patients having a | dominant right coronary artery |
______of patients having a dominant left circumflex. | 15% |
Posterior descending artery | supplies the posterior left ventricular myocardium |
post. Descend. Artery occlusion causes posterior MI | (ST depression in V1-V4 with a dominant R wave in V1). |
Circumflex | Lateral, Occlusion produces ST elevation in V5, V6, I and aVL |
Left anterior descending: anterior and septum | Occlusion ST segment elevation in leads V1-V4 |
Right bundle branch block in acute anterior myocardial infarction suggests obstruction prior to the | first septal branch of the left anterior descending coronary artery |
Left main stem: branches into the | left anterior descending artery and circumflex and supplies most of the left ventricle. |
Complete left main stem occlusion is | |
invariably fatal. | |
Occlusion of the left main stem has the same effect as occlusion of the left circumflex and | anterior descending simultaneously (given that they are both branches of the above). |
It would produce extensive ST elevation across all the chest leads | I and aVL and possibly aVR, |
Obtuse marginal: one of the branches of the circumflex and supplies the | 'high lateral' region of the left ventricle (ECG leads I and aVL) |