ADDRESSING INFERIOR WALL MYOCARDIAL INFARCTION AND SINUS ARREST

Updated 9/25

In the image above, a patient is complaining
of persistent indigestion, which is not relieved
by medication.

The nurse decides to call the doctor for further
intervention. It is important to note that the
inferior wall of the heart rests on the diaphragm.
Heartburn related to inferior wall myocardial
infarction, is not uncommon.

Please refer to the image above for more information.

The SA node is the pacemaker of the heart.

The SA (sinoatrial) node is the pacemaker of the 
heart and is part of the electrical conduction system.
It is located in the upper part of the right atrium.
When the SA node fires, the right and left atria
contract simultaneously and blood is forced into
the right and left ventricles.
Learn more about : Pacemaker implantation

Sinus arrest
In the image above, sinus arrest is demonstrated.
On the EKG tracing, there is a long pause. The SA
node does not fire as it is supposed to normally.

There is no blood flow, as would occur when the
SA node is functioning normally. This may result
in fatigue and dizziness.

Hemodynamics refers to blood flow. The heart is a pump,
which pumps blood around the body. If there is damage, 
like a myocardial infarction, the heart's function will be 

impaired. 

Learn more about: Congestive heart failure