- If the whole gland was removed, levothyroxine starts right away and is adjusted with blood tests over the following weeks, and if half was removed, about one in four people will need it.
- Calcium can drop temporarily in about one in four patients after a thyroidectomy, y permanently, in about one in a hundred.
- The voice can change temporarily in about one in ten and recovers in weeks or months, and permanent change is uncommon.
Discharge after thyroid surgery is quick: usually one night in hospital, and sometimes the same day. What follows at home is predictable, and it should be, because the first days are much alike between patients and the three things to monitor are always the same.
The hormone
If the whole thyroid was removed, no tissue is left to produce hormone, and Thyroid hormone in tablet form, identical to what the gland produces. Taken on an empty stomach and adjusted with TSH. starts in the first days, one tablet on an empty stomach every morning. The initial dose is calculated by weight and adjusted with The pituitary hormone that tells the thyroid to produce. It is what is measured to adjust the levothyroxine dose. over the following weeks, because the body takes time to show whether it is right. If half was removed, the remaining half is usually enough, but not always: it is checked with blood tests, and hormone is started only if needed.
- 23 %of people end up taking levothyroxine after a hemithyroidectomy, y hypothyroidism appears in 29 %.Cooper D et al. Thyroid Res. 2024, 17: 18. Meta-analysis of 66 studies.
- 100 %after a total thyroidectomy. It is expected and is compensated with a daily tablet adjusted by blood tests.Anatomical consequence: without a gland there is no hormone production.
A practical detail: levothyroxine is taken on its own, with water, half an hour or more before breakfast, and away from calcium and iron, which keep it from being absorbed. That is precisely what is most often forgotten in the first weeks, when calcium is taken at the same time, and they are separated by several hours.
The calcium
Attached to the posterior surface of the thyroid are four glands the size of a lentil, the Four small glands behind the thyroid that regulate calcium. They are protected in surgery and their function can be temporarily reduced for a few days., which regulate the calcium in the blood. When the whole thyroid is removed they are protected, but their function can be temporarily reduced for a few days, and calcium drops. It is felt as tingling in the lips, the fingertips or the feet, and sometimes cramps. It is treated with oral calcium and vitamin D for a few weeks, until the parathyroids recover their function. When only half of the thyroid is removed, this is exceptional, because the two parathyroids on the other side are not touched.
- 27 %transient hypocalcemia after a thyroidectomy, in a meta-analysis of the literature, and permanent, about 1 %.Edafe O et al. Br J Surg. 2014, 101(4): 307-320.
The voice
A hoarse or tired voice in the first days is normal: the anesthesia tube and the surgery itself inflame the area. What is watched is a marked change that does not improve in the first week, because it may mean the vocal cord nerve was irritated during the dissection. It is almost always transient and recovers in weeks or a few months, with voice therapy if needed. Permanent injury is uncommon, especially when the nerve is identified and watched with a A device that records the activity of the voice nerve during surgery and warns with a signal if it is being irritated. during the surgery.
- 9.8 %temporary vocal cord palsy after thyroid surgery, and 2.3 % permanent, in 25,000 patients. The figures include cancer surgery and reoperations, and in a lobectomy for a benign nodule the risk is lower.Jeannon JP et al. Int J Clin Pract. 2009, 63(4): 624-629.
Week by week
- 01The first dayDischarge with written instructions: levothyroxine if the whole gland was removed, calcium if indicated, the painkiller on a schedule. Discomfort when swallowing and a hoarse voice are expected.
- 02The first weekThis is when calcium can drop. Any tingling is reported the same day. The wound is kept clean and dry, and the scar runs along a neck crease.
- 03Weeks four to eightThe first TSH blood test to adjust the hormone dose, and a voice check if it changed. The result of the operated specimen, with the exact type and the margins, is available by then.
- 04The first yearBlood tests every few months until the dose settles, then one or two a year. If it was cancer, a neck ultrasound joins the schedule.
- Cooper D et al. Hypothyroidism after hemithyroidectomy: systematic review and meta-analysis. Thyroid Res. 2024, 17: 18.
- Edafe O, Antakia R, Laskar N, Uttley L, Balasubramanian SP. Systematic review and meta-analysis of predictors of post-thyroidectomy hypocalcaemia. Br J Surg. 2014, 101(4): 307-320.
- Jeannon JP et al. Diagnosis of recurrent laryngeal nerve palsy after thyroidectomy: a systematic review. Int J Clin Pract. 2009, 63(4): 624-629.
- Terris DJ et al. American Thyroid Association statement on outpatient thyroidectomy. Thyroid. 2013, 23(10): 1193-1202.
- Haugen BR et al. 2015 American Thyroid Association Management Guidelines for Adult Patients with Thyroid Nodules and Differentiated Thyroid Cancer. Thyroid. 2016, 26(1): 1-133.
