Hyponatremia, or low sodium levels, during pregnancy can stem from different causes depending on the trimester.
| Trimester | Common Cause of Hyponatremia |
|---|---|
| First Trimester | Hyperemesis Gravidarum |
| Second/Third Trimester | Preeclampsia |
Causes of Hyponatremia by Trimester
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First Trimester: According to research, hyperemesis gravidarum is a primary cause of hyponatremia during this period [3]. Hyperemesis gravidarum is severe and persistent nausea and vomiting during pregnancy, leading to dehydration and electrolyte imbalances.
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Second and Third Trimesters: Preeclampsia becomes a more frequent culprit in the later stages of pregnancy [3]. Preeclampsia is a pregnancy complication characterized by high blood pressure and signs of damage to another organ system, often the kidneys, which can affect sodium regulation.
In summary, while multiple factors can contribute to hyponatremia, hyperemesis gravidarum is common in early pregnancy, while preeclampsia is more common in the later stages.
