Electrolyte & Acid-Base Disorders
What are electrolyte & acid-base disorders?
Electrolyte and acid-base disorders refer to imbalances in the levels of essential ions (electrolytes) and changes in the body's acid-base balance. These imbalances can lead to various physiological disturbances and impact the proper functioning of vital organs, including the heart, brain, muscles, and kidneys. As a nephrologist, Dr Nontembiso Mhlana specialises in diagnosing and treating these intricate disorders, ensuring optimal patient care and overall well-being.
What are the common symptoms of electrolyte & acid-base disorders?
Patients with electrolyte and acid-base disorders often present with a wide range of symptoms, which can vary depending on the specific imbalance. Common symptoms include:
- Fatigue and weakness: Electrolyte imbalances, such as low potassium (hypokalemia) or low sodium (hyponatremia), can lead to muscle weakness and generalised fatigue.
- Cardiac irregularities: Abnormal electrolyte levels can disrupt the heart's electrical signalling, causing palpitations, arrhythmias, and even cardiac arrest.
- Neurological disturbances: Electrolyte imbalances, particularly abnormal calcium and magnesium levels, can lead to neurological symptoms like confusion, seizures, and numbness.
- Dehydration or fluid overload: Disrupted electrolyte levels often accompany changes in fluid balance, resulting in symptoms like excessive thirst, dry mouth, and oedema.
- Respiratory changes: Acid-base imbalances, such as respiratory acidosis or alkalosis, can lead to altered breathing patterns and shortness of breath.
- Gastrointestinal issues: Electrolyte disturbances may cause nausea, vomiting, diarrhoea, or constipation.
- Muscle cramps: Imbalances in potassium, magnesium, and calcium levels can result in painful muscle cramps.
How do you treat electrolyte & acid-base disorders?
Dr Nontembiso Mhlana employs a multifaceted approach to treat electrolyte and acid-base disorders, tailored to each patient's specific condition:
- Fluid and electrolyte replacement: Depending on the identified imbalance, intravenous or oral administration of appropriate fluids and electrolytes can help restore balance.
- Medication: Specific medications can be prescribed to address imbalances. For instance, diuretics may be used to manage fluid overload, while supplements can restore deficient electrolytes.
- pH regulation: To manage acid-base imbalances, treatments aim to correct the underlying cause. This might involve addressing respiratory issues or metabolic abnormalities.
- Underlying condition management: Dr Mhlana assesses and treats any underlying medical conditions contributing to the electrolyte or acid-base disorder, such as kidney dysfunction or endocrine disorders.
- Dietary modifications: In some cases, dietary changes can help prevent recurrent imbalances. Patients may need to adjust their intake of certain minerals and electrolytes.
- Ongoing monitoring: Regular follow-up appointments and monitoring of electrolyte levels are crucial to ensuring effective treatment and preventing future imbalances.

