Electrocardiogram manifestations of hyponatraemia
Shi Zou1, Qian Zhang2, Shicheng Gao1
1Department of Infectious Diseases, Zhongnan Hospital, Wuhan University, Hubei, China.
Insights
Hyponatremia, a common electrolyte disturbance, can cause serious heart rhythm problems like sinus arrest. This case highlights its impact on a patient with AIDS and cirrhosis, showing ECG changes with sodium level shifts.
Area of Science:
- Cardiology
- Electrophysiology
- Internal Medicine
Background:
- Electrolytes are crucial for normal heart function and electrical activity.
- Electrolyte imbalances can disrupt myocardial cell depolarization and repolarization, leading to arrhythmias.
- Hyponatremia is the most frequent electrolyte disturbance observed in hospitalized patients.
Observation:
- A case study involving a patient diagnosed with acquired immune deficiency syndrome (AIDS) and decompensated cirrhosis.
- The patient presented with sinus arrest, a severe form of bradycardia, directly linked to hyponatremia.
- Electrocardiogram (ECG) findings were meticulously documented throughout the therapeutic process, correlating sodium levels with cardiac electrical activity.
Findings:
- Hyponatremia was identified as the direct cause of sinus arrest in this complex patient.
- The study details the specific ECG manifestations observed at varying serum sodium concentrations.
- Therapeutic interventions aimed at correcting hyponatremia led to the resolution of sinus arrest.
Implications:
- This case underscores the critical importance of monitoring electrolyte balance, particularly sodium levels, in patients with co-existing conditions like AIDS and cirrhosis.
- It highlights hyponatremia as a potentially life-threatening cause of cardiac arrhythmias, necessitating prompt diagnosis and management.
- Understanding the ECG changes associated with hyponatremia can aid clinicians in timely identification and treatment, improving patient outcomes.
Abstract:
Electrolytes play a vital role in myocardial electrophysiological activities in the human body. Electrolyte disturbances can affect depolarisation and repolarisation of myocardial cells and thus result in arrhythmia. The most common electrolyte disturbance among hospitalised patients is hyponatraemia. We report on a case of an acquired immune deficiency syndrome patient with decompensated cirrhosis, who developed sinus arrest from hyponatraemia. The electrocardiogram manifestations at different sodium concentrations were also recorded in subsequent therapeutic processes.
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