How can hypoglycaemia be identified as a reversible cause during cardiac arrest?

Hypoglycaemia can be identified as a reversible cause during cardiac arrest primarily by checking blood glucose levels. In a situational context, when a patient is in cardiac arrest, the quick assessment of blood glucose is crucial because low blood sugar can lead to a loss of consciousness and cardiac function. Identifying hypoglycaemia through a blood test allows for immediate interventions, such as administering glucose, which could potentially restore normal cardiac rhythm and function.

In this context, other assessment methods may not provide direct information related to blood glucose status. For example, ECG monitoring can indicate cardiac activity or arrhythmias but does not provide insights into glucose levels. Similarly, observing respiratory patterns or listening for heart sounds may help in assessing overall condition but won't directly point to hypoglycaemia as a reversible cause. Thus, checking blood glucose levels is the key step to determine if hypoglycaemia is contributing to the cardiac arrest and allows for appropriate management.