#Sinoatrial (SA) node #arrhythmias, also known as sinus node dysfunction or sick sinus syndrome, occur when the heart's natural pacemaker (SA node) doesn't function properly, leading to abnormal heart rhythms. These arrhythmias can include slow heart rates (bradycardia), fast heart rates (tachycardia), or a combination of both, potentially causing symptoms like lightheadedness, dizziness, and fatigue. #education #ECG #doctor #medicalstudent #nurses | Med G

11K views · 133 reactions | Sick Sinus Syndrome (SSS), or sinus node dysfunction (SND) ⚡This ECG visual highlights SSS-related rhythms: Save | Share |Tag a colleague #Cardiology #Electrophysiology #SickSinusSyndrome #ECG #HeartRhythm #MedEd | Abdallah Othman | Facebook

15K views · 129 reactions | Sinus bradycardia: (<60 bpm) is often benign but may signal SA node dysfunction, medications, or post-viral autonomic issues (JACC, 2024).  Share your approach to complex cases! #Cardiology #SinusBradycardia #Electrophysiology | Abdallah Othman | Facebook