Arteral fibrillation.first give anti coagulant and then b blocker and digoxin
There are definitely P waves visible in the picture. Also I think QRS complexes are narrow. The rate is about 300. All this leads to a diagnosis of one on one atrial flutter. Adenosine works and carotid sinus massage
Monomorphic ventricular tachycardia- abnormal p and wide QRS Monitor ecg, O2 if dyspnea, BP Electrocardioversion or an anti arrhythmic drug could be given
It's a ventricular tachycardia with abnormal P wave and narrowing QRS complex, and heart rate is about 300. Treatment for this condition is shock and lidocaine. If the patient is unresponsive, intravenous amiodarone.