Volatile Medicine

07/24/2026

🔅Hypernatremia is defined as a serum sodium concentration exceeding 145 mEq/L. Sodium is the most important osmotically active particle in the extracellular space and closely linked to the body’s fluid balance. An increase in the serum sodium concentration is most often due to a free water deficit caused by excessive fluid loss (e.g., diarrhea/vomiting, sweating, increased diuresis) or insufficient water intake (e.g., altered mental status, impaired thirst mechanism). In some cases, hypernatremia is due to a real sodium overload caused by high sodium intake (e.g., hypertonic infusion, drinking sea water) or inadequately high sodium reabsorption by the kidneys (e.g., primary hyperaldosteronism, Cushing syndrome). Symptoms are predominantly neurological and nonspecific (e.g., lethargy, confusion, focal neurological deficits, seizures, coma), and they are often accompanied by signs of cellular dehydration (e.g., dry mucous membranes, decreased salivation). Assessing the patient’s volume status (during physical examination) and their renal ability to reabsorb free water (urine osmolality) can help determine the etiology of hypernatremia. Acuity of onset, volume status, and etiology should all be considered in order to determine the appropriate therapeutic approach and avoid complications. In children, a rapid decrease in the serum sodium concentration can cause cerebral edema, which carries the risk of brain herniation. In adults, a relationship between rapid correction and cerebral edema has not been observed; however, guidelines still recommend cautious correction. Pic credit : AMBOSS

07/22/2026

🔅Current Guideline Recommendations:
Current guideline-recommended rate of sodium correction in chronic hyponatremia is stratified by risk for osmotic demyelination syndrome (ODS), though recent evidence has sparked significant debate about whether these limits may be too conservative.

🔸Both US and European guidelines recommend the following correction limits for chronic hyponatremia (defined as developing over ≥48 hours):
▫️ Standard-risk patients: ≤10–12 mEq/L in the first 24 hours and ≤18 mEq/L in the first 48 hours
▫️ High-risk patients (Na ≤105 mEq/L, alcohol use disorder, liver disease, malnutrition, hypokalemia): ≤8 mEq/L in any 24-hour period (some experts recommend ≤6 mEq/L)
▫️ Cirrhosis (per AASLD): Goal of 4–6 mEq/L per 24 hours, not to exceed 8 mEq/L per 24 hours

‼️ For severely symptomatic patients (seizures, somnolence, cardiorespiratory distress), an initial rapid rise of 4–6 mEq/L within 1–2 hours using 3% hypertonic saline boluses (100–150 mL over 10–20 minutes, repeated up to 3 times) is recommended to reverse encephalopathy, while still respecting the 24-hour correction limits above. Were you following the same guidelines?

07/21/2026

07/19/2026

Early signs and symptoms of hyponatremia includes nausea, vomiting, anorexia, disorientation, headache, fatigue, weakness, irritability, lethargy, confusion, and muscle cramps.[3] Falls and confusion in the due to hyponatremia is common in the elderly.[4] With severe hyponatremia, seizures can develop. There are numerous etiologies of hyponatremia. The correct treatment and management of hyponatremia depends on identifying the etiology of the hyponatremia. For example, one must differentiate between iatrogenic hyponatremia (typically due to thiazide diuretics, carbamazepine, antidepressants, or antipsychotics), idiopathic hyponatremia, or other etiologies (like hypothyroidism or alcoholism). Generally speaking, the majority of hyponatremias in the psychiatric population are associated with physiologically inappropriate (but not necessarily elevated) levels of arginine vasopressin (AVP), leading to water retention and serum hypotonicity.

07/18/2026

Chorea Gravidarum is a rare movement disorder that occurs during pregnancy and is characterized by sudden, involuntary, non-rhythmic movements. While it can be alarming for both the patient and family, it is often temporary and usually resolves after delivery.

Although uncommon today, it’s important to recognize because it may be associated with conditions such as a history of rheumatic fever (Sydenham chorea), autoimmune disorders, or hormonal changes during pregnancy. Early evaluation helps rule out other neurological conditions and guides appropriate management.

✨ Awareness leads to timely diagnosis, reassurance, and better outcomes for both mother and baby.

07/08/2026

Chorea gravidarum = chorea (abrupt, jerky, non‑rhythmic movements) that starts during pregnancy.
• Typically involves face, tongue, upper limbs; movements can look “dance‑like” and worsen with stress or fatigue.
• Classically associated with a history of Sydenham’s chorea or rheumatic fever in childhood.
• Thought to be triggered or unmasked by pregnancy‑related hormonal and immune changes in women with vulnerable basal ganglia.
• Onset usually in 1st–2nd trimester; often improves in late pregnancy and resolves after delivery.
• Differential includes eclampsia, autoimmune disease (e.g., SLE, antiphospholipid syndrome), metabolic causes, and drug‑induced chorea (e.g., OCPs, antipsychotics).
• Management focuses on ruling out secondary causes, protecting maternal–fetal health, and controlling movements with the safest possible symptomatic agents in pregnancy.
• Most cases have good prognosis, but recurrence can occur with future pregnancies or estrogen exposure. ncies