As a medical professional with expertise in cardiology, I can provide you with information on the signs of unstable tachycardia. Tachycardia refers to a heart rate that is faster than normal, typically above 100 beats per minute for adults. When tachycardia is described as unstable, it implies that the condition is associated with hemodynamic instability or other serious symptoms that could be life-threatening. Signs of unstable tachycardia may include: 1. Altered mental status: Confusion or decreased level of consciousness. 2. Syncope: Fainting or a brief loss of consciousness. 3. Acute coronary syndrome: Chest pain or discomfort that could indicate a heart attack. 4. Heart failure: Shortness of breath, rapid breathing, or fluid retention, which can lead to swelling in the legs or lungs. 5. Shock: A life-threatening condition characterized by low blood pressure and signs of poor organ perfusion, such as cool, clammy skin and rapid, weak pulse. 6. Severe hypertension: Extremely high blood pressure that can lead to organ damage. 7. Myocardial ischemia: Insufficient blood flow to the heart muscle, which can cause chest pain or discomfort. 8. Pulmonary edema: Fluid accumulation in the lungs, which can cause severe shortness of breath and coughing up frothy, pink mucus. 9. Arrhythmia: Irregular heartbeats that can be felt as palpitations or skipped beats. It's important to seek immediate medical attention if you or someone else is experiencing any of these signs, as they can indicate a serious medical emergency. read more >>

��Hemodynamically unstable�� is defined by the following: chest pain, shortness of breath, decreased level of consciousness, low blood pressure, shock, pulmonary congestion, congestive heart failure, and AMI. 6. Classify Specific Tachycardia. 1.Atrial fibrillation/flutter. 2.Narrow-complex tachycardias.read more >>