Final Answer:
Asystole and pulseless electrical activity (PEA) are non-shockable rhythms.
Step-by-step explanation:
In the context of cardiopulmonary resuscitation (CPR) and defibrillation, rhythms are classified as shockable or non-shockable. Shockable rhythms are those that can be treated with a defibrillator, such as ventricular fibrillation (VF) and pulseless ventricular tachycardia (VT). Non-shockable rhythms, on the other hand, cannot be treated with a defibrillator, and CPR is the primary treatment method.
Asystole: Asystole is a non-shockable rhythm characterized by the absence of any electrical activity in the heart. It is also known as “flatline” on an electrocardiogram (ECG). Asystole occurs when the heart’s pumping ability is severely compromised or ceases altogether. It is often a result of severe medical conditions, such as a heart attack, electrolyte imbalances, or drug overdoses. Due to the lack of electrical activity, asystole is not treatable with a defibrillator, and CPR is the primary intervention to restore blood flow to vital organs.
Pulseless Electrical Activity (PEA): PEA is another non-shockable rhythm that occurs when the heart has a normal-appearing electrical activity on an ECG but does not effectively pump blood. This can be due to various reversible causes, such as respiratory arrest, tension pneumothorax, or hypovolemic shock. PEA is not treatable with a defibrillator, and the focus is on identifying and treating the underlying cause to restore normal heart function and blood circulation.
In summary, asystole and pulseless electrical activity are two non-shockable rhythms that require a different approach to treatment compared to shockable rhythms. The primary intervention for these rhythms is CPR, while identifying and addressing the underlying cause is crucial for restoring normal heart function and blood circulation.