AV Reentrant Tachycardia is a fast heart rhythm caused by an electrical “loop” that repeatedly activates the heart. It usually involves the normal AV node pathway plus an extra pathway (an accessory pathway) between the atria and ventricles. It often starts and stops suddenly and can cause palpitations, chest discomfort, or lightheadedness. Clinicians commonly discuss it in emergency care, outpatient cardiology, and electrophysiology (heart rhythm) clinics.

The **T1-T2 level** is the spinal segment between the **first thoracic (T1)** and **second thoracic (T2)** vertebrae. It sits at the **upper thoracic spine**, close to the transition from the neck to the upper back. Clinicians use the term **T1-T2 level** to describe **where** a spinal finding, symptom source, or planned treatment is located.

AVNRT is a common type of supraventricular tachycardia, meaning a fast heart rhythm that starts above the ventricles. It happens because of a re-entry circuit within or near the atrioventricular (AV) node, a key “relay station” in the heart’s electrical system. AVNRT is commonly discussed in emergency care, cardiology clinics, and electrophysiology (heart rhythm) labs.

The T1-T2 disc is the intervertebral disc between the first (T1) and second (T2) thoracic vertebrae. It sits near the base of the neck, at the transition from the cervical spine to the upper thoracic spine. Clinicians commonly reference the T1-T2 disc in imaging reports, symptom localization, and surgical planning. It can be involved in degenerative changes, disc herniation, or other less common spine conditions.

AV Nodal Reentrant Tachycardia is a common type of supraventricular tachycardia (SVT), meaning a fast heart rhythm that starts above the ventricles. It happens when electrical signals loop within or near the atrioventricular (AV) node, producing a rapid, regular heartbeat. People often notice sudden-onset palpitations, and the rhythm may start and stop abruptly. Clinicians most commonly use the term when describing an SVT pattern on an ECG and when planning rhythm-focused evaluation or treatment.

Paroxysmal SVT is a type of rapid heart rhythm that starts suddenly and stops suddenly. “SVT” means *supraventricular tachycardia*, or a fast rhythm that begins above the ventricles. “Paroxysmal” means the episodes come and go rather than being continuous. This term is commonly used in cardiology visits, emergency care, ECG interpretation, and medical documentation.

SVT is a fast heart rhythm that starts above the ventricles (the heart’s lower pumping chambers). The letters SVT most commonly stand for **supraventricular tachycardia**. It is used in cardiology to describe several related rhythm disorders that can cause sudden episodes of rapid heartbeat. SVT is discussed in clinics, emergency departments, and heart rhythm (electrophysiology) services.

A C7-T1 disc herniation is a condition where the disc between the C7 and T1 vertebrae protrudes or leaks beyond its normal boundary. It occurs at the cervicothoracic junction, where the neck transitions into the upper back. It can irritate or compress nearby nerve tissue, such as the C8 nerve root or (less commonly) the spinal cord. The term is commonly used in spine clinics and radiology reports to describe a specific anatomic source of neck and arm symptoms.

Supraventricular Tachycardia is a fast heart rhythm that starts “above the ventricles,” usually in the atria or the atrioventricular (AV) node. It typically causes sudden episodes of rapid heartbeat that begin and end abruptly. It is commonly discussed in emergency care, cardiology clinics, and electrophysiology (heart rhythm) practice. It is a broad umbrella term that includes several distinct rhythm mechanisms.

Atrial Flutter is a heart rhythm disorder where the upper chambers of the heart (the atria) beat very fast in an organized pattern. It is a type of supraventricular tachycardia (a fast rhythm that starts above the ventricles). Clinicians most often identify it on an electrocardiogram (ECG/EKG) and manage it in outpatient cardiology clinics, emergency care, and hospital settings. The clinical focus is usually symptom control and reducing risks linked to sustained abnormal rhythm.