The next morning I was adamant that the specialist would see me and it would be that day! Luckily I didn't have to wait long- they called and told me that we would be meeting with a pediatric cardiologist for a fetal echocardiogram to check the baby's heart for defects and other problems that might be causing the low heart rate. I was glad they were being aggressive but extremely nervous about what they might find.
11:30 took forever to arrive and we arrived at the appointment. I got onto the table for the echo and was shaking- thinking that the baby wouldn't have a heart rate when they looked. Thank god I was wrong. He was in there and his heart was beating, slow, but it was beating and he was wiggling around in there. The tech actually took forever because he wouldn't sit still and cooperate for her. I took all that movement as a good sign. By about 1:30 she had all the images of his heart that she needed and we took a break for lunch and the specialist would review everything and meet with us after lunch.
It was then that we got the news that baby Jake has something called Congenital Complete Heart Block. It sounded like a death sentence when the specialist first said those words to me. It felt as though the world and time stood still. What is that you ask? Here is the official definition
"Heart block is an abnormal heart rhythm where the heart beats too slowly (bradycardia). In this condition, the electrical signals that tell the heart to contract are partially or totally blocked between the upper chambers (atria) and the lower chambers (ventricles). For this reason, it is also called atrioventricular block (AV block).
What is Heart Block?
A normal heartbeat begins as an electrical signal that comes from the heart’s master pacemaker, the sinoatrial (SA) node, located in the right atrium. The electrical signal travels through the atria and reaches another natural pacemaker called the atrioventricular (AV node). As the signal continues and crosses to the ventricles, it passes through a bundle of tissue called the AV bundle, also called the bundle of His. The bundle divides into thin, wire-like structures called bundle branches that extend into the right and left ventricles. The electrical signal travels down the bundle branches to thin fibers. Lastly, these fibers send out the signal to the muscles of the ventricles, causing them to contract and pump blood into the arteries. Heart block occurs when the signal is disrupted or slows down at any point on this electrical path.
Types of Heart Block
- First-degree heart block – The electrical impulses are slowed as they pass through the conduction system, but all of them successfully reach the ventricles. First-degree heart block rarely causes any symptoms or problems. Well-trained athletes may have this. Medications can contribute to the condition. No treatment is generally necessary for first-degree heart block.
- Second-degree heart block (Type I) – The electrical impulses are delayed further and further with each heartbeat until a beat is skipped entirely. It sometimes causes dizziness and/or other symptoms. People normal heart rhythms may sometimes have this when they are sleeping.
- Second-degree heart block (Type II)v– With this condition, some of the electrical impulses are unable to reach the ventricles. This condition is less common than Type I, but is generally more serious. In some cases, a pacemaker is implanted to treat the abnormally slow heartbeat that may result from this condition.
- Third-degree heart block – With this condition, also called complete heart block,
none of the electrical impulses can reach the ventricles. When the
ventricles (lower chambers) do not receive electrical impulses from the
atria (upper chambers), they may generate some impulses on their own,
called functional or ventricular escape beats. Ventricular escape beats,
natural backup signals, usually are very slow, however, and cannot
generate the signals necessary to maintain full functioning of the heart
muscle.
Baby Jake has Complete, or 3rd degree heart block and will require a pacemaker at some point, whether it is a few hours after birth, days, weeks or years we just don't know yet.
Continued....