Your heart’s sinus node also may suddenly pause or stop (sinus pause or sinus arrest) for more than 2 to 3 seconds. Sick sinus syndrome is uncommon and is often found in people aged 50 and older, with increasing prevalence as people age. Most people don’t have symptoms, while some need an implanted pacemaker to restore their normal heart rhythm.

Sinusitis is a condition that causes inflammation of the sinuses, which are air-filled spaces in the bones of the face. Nausea is a feeling of sickness in the stomach that can sometimes lead to vomiting. While sinusitis does not directly cause nausea, it can sometimes lead to nausea indirectly. Here are some ways that sinusitis can cause nausea: Postnasal drip: Sinusitis can cause postnasal drip, which is a flow of mucus from the back of the nose down the throat. This mucus can irritate the stomach and cause nausea. Dehydration: Sinusitis can cause dehydration, which can also lead to nausea. Pain: Sinusitis can cause pain in the face, head, and neck. This pain can be severe and can sometimes lead to nausea. Anxiety: Sinusitis can cause anxiety, which can also lead to nausea.

**Sick sinus syndrome**, also known as **sinus node dysfunction**, is a heart rhythm disorder that affects the heart's natural pacemaker, the **sinus node**.Here are the key points: 1.**Symptoms**:

Sick sinus syndrome can give you a heartbeat that’s too slow, too fast or a combination of both. Your sinoatrial (SA) node, where your heartbeat begins, is to blame. Some people don’t have symptoms with sick sinus syndrome, but others need a pacemaker to get a normal heart rhythm. This affects mostly older people. What is sick sinus syndrome?