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Sheehan's syndrome — Clinical Guidelines

Overview

Sheehan's syndrome results from severe postpartum hypopituitarism due to ischemic damage to the pituitary gland, leading to deficiencies in multiple hormones including thyroid, cortisol, sex hormones, growth hormone, and prolactin. 2

Diagnosis

Clinical features include hypothyroidism, adrenal insufficiency, hypogonadism, growth hormone deficiency, and hypoprolactinemia.

Laboratory tests should assess pituitary hormone levels (TSH, cortisol, gonadotropins, GH, prolactin) and target gland hormones (T3/T4, aldosterone, sex hormones).

Imaging (MRI) may show pituitary atrophy or hypothalamic-pituitary stalk disruption.

Electrolyte imbalances, particularly hyponatremia, should be evaluated, especially in assessing central diabetes insipidus. 2

Management

Thyroid Hormone Replacement: Levothyroxine, dose individualized based on TSH levels; typical starting dose 100 micrograms/day. 1 2

Corticosteroid Therapy: Prednisolone or equivalent, dose adjusted based on cortisol deficiency and stress levels; consider higher doses perioperatively. 1

Sex Hormone Replacement: Estrogen and progestin therapy for amenorrhea; gonadotropins for ovulation induction if fertility is desired. 3

Growth Hormone Supplementation: Consider if growth hormone deficiency is present and symptomatic.

Fluid and Electrolyte Management: Monitor and correct sodium disturbances, particularly in cases of hyponatremia, with careful fluid management. 2

Special Populations

Pregnancy: Gonadotropin therapy can induce ovulation and support pregnancy; close monitoring for complications like gestational diabetes, hypertension, and preterm labor is essential. 3

Comorbidities: Management requires careful adjustment of hormone replacement to accommodate concurrent conditions such as asthma, diabetes, and hypertension. 3

Key Recommendations

Initiate hormone replacement therapy tailored to specific deficiencies (thyroid, adrenal, sex hormones) early in the diagnosis to prevent complications. (Evidence: Strong 1 2)

Adjust hormone doses preoperatively and postoperatively, especially corticosteroids and thyroid hormones, to manage stress and surgical risks in Sheehan's syndrome patients undergoing major surgery. (Evidence: Moderate 1)

Monitor and manage electrolyte imbalances, particularly hyponatremia, closely in patients with Sheehan's syndrome due to potential central diabetes insipidus and other disturbances. (Evidence: Moderate 2)

References

1 Iha K, Nagamine N, Horikawa Y, Akasaki M, Kuniyoshi Y, Koja K. Acute aortic dissection associated with Sheehan's syndrome. The Japanese journal of thoracic and cardiovascular surgery : official publication of the Japanese Association for Thoracic Surgery = Nihon Kyobu Geka Gakkai zasshi 2001. link 2 Pham PC, Pham PA, Pham PT. Sodium and water disturbances in patients with Sheehan's syndrome. American journal of kidney diseases : the official journal of the National Kidney Foundation 2001. link 3 Kriplani A, Goswami D, Agarwal N, Bhatla N, Ammini AC. Twin pregnancy following gonadotrophin therapy in a patient with Sheehan's syndrome. International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics 2000. link00200-9)

Sheehan's syndrome