This drug isn’t always as effective at treating third-degree heart block as it is for treating first- or second- degree heart block. But in some cases, it can help revive normal electrical patterns.

First-degree heart block is the mildest type and often requires no treatment. Third-degree heart block is potentially life-threatening, and most people need the placement of a pacemaker ...

Third degree heart block occurs when there is a total blockage of electrical signals that regulate a person's heart beat. Learn more here. ... In first degree heart block, ...

Heart block is a type of arrhythmia that affects the electrical system of the heart and causes it to beat irregularly and slower than usual. A third degree heart block is the most serious type. It ...

First-degree and even second-degree heart block (Type I), may be managed with little or no treatment. These types of heart block may have little impact on your long-term health or quality of life.

Heart Block Symptoms. Your symptoms depend on the type of heart block you have. If you have first degree, you may not have any at all. Second-degree symptoms may include: ...

"First-degree Fetal Heart Block May Be Reversible." ScienceDaily. www.sciencedaily.com / releases / 2007 / 02 / 070210170613.htm (accessed June 4, 2025). Explore More ...

The team found that while first-degree fetal heart block may be reversible with the steroid drug dexamethasone, the condition could advance within as little as one week to a third-degree block ...

Only one fetus reversed from third-degree to first-degree AV block after treatment with dexamethasone. The rest remained in third-degree AV block throughout the pregnancy.