Background Hyperkalemia is one of the more common acute life-threatening metabolic emergencies. Although only a small proportion of cases progress to cardiac arrest (CA), early detection and timely intervention often yield excellent outcomes. Dynamic and characteristic ECG manifestations combined with point-of-care testing (POCT) potassium management provide timely evidence for hyperkalemia treatment. Wide QRS complex rhythms blended with T waves are extremely high-risk signals for CA due to hyperkalemia. Case Presentation We report a 68-year-old male patient who presented to the hospital with syncope. ECG findings included peaked T waves, loss of P-waves, sinoventricular conduction, and a wide QRS complex rhythm. Shortly after admission, the patient experienced CA. POCT potassium levels were 9.0 mmol/L. With the help of ECG and POCT potassium results, the patient achieved return of spontaneous circulation (ROSC) after 32 minutes of CPR without residual neurological deficits. Conclusion This paper highlights the role of dynamic ECG monitoring and POCT potassium management in rescuing patients with lethal hyperkalemia.Through POCT potassium monitoring, identification of high-risk ECG signals, combined with effective pharmacological intervention and high-quality CPR, the success rate of rescue treatment can be significantly improved, and patient prognosis can be enhanced.
Chen et al. (Mon,) studied this question.