Nursing care
Thyroidectomy Complications nursing care: what to assess and what to do first
Written and reviewed by Dana Whitfield, RN, MSN · 6 min read · Updated September 2026
Short answer
The two complications that can kill or disable a thyroidectomy patient are airway obstruction from hematoma or laryngeal nerve injury, and hypocalcemic tetany from parathyroid disturbance. Airway comes first in the first hours; watch for tetany specifically in the 24 to 48 hour window, and check Chvostek's sign if it appears.
The clinical picture
A thyroidectomy sits close to structures that are easy to disturb but hard to see: the recurrent laryngeal nerves, the parathyroid glands, and a vascular neck bed prone to hematoma. The complications that follow surgery map directly onto that anatomy, not onto the thyroid tissue itself.
In the immediate postoperative period, the dominant risk is airway compromise, either from a rapidly expanding hematoma compressing the trachea or from bilateral laryngeal nerve injury causing vocal cord paralysis. Both present fast, within the first few hours, and both are surgical emergencies.
The second complication runs on a different clock. If the parathyroid glands were bruised, devascularized, or accidentally removed during dissection, calcium regulation fails, and hypocalcemia develops over the following one to two days rather than immediately. Tetany appearing within 24 to 48 hours of surgery is the tell: it means the parathyroids were disturbed, and Chvostek's sign, a facial twitch elicited by tapping over the facial nerve, is the bedside check that confirms it.
Assessment: what to look for and in what order
Start at the neck. Inspect and palpate the dressing and the back of the neck for swelling, since blood tracks posteriorly under gravity and can be missed if you only look at the front of the incision. A rapidly increasing girth or a tight, bulging dressing is an airway emergency until proven otherwise.
Move to voice and breathing. Ask the patient to speak as soon as they're responsive; hoarseness or a weak voice suggests unilateral laryngeal nerve injury, while stridor or an inability to speak at all suggests bilateral injury and impending airway obstruction. Listen for stridor on inspiration specifically, not just for generalized respiratory distress.
Then assess for tetany, and time it against the clock, not just the symptom. Perioral tingling, numbness in the fingers, and muscle twitching that appear on day one or two, rather than in the first hour, point to falling calcium from parathyroid disturbance. Elicit Chvostek's sign by tapping the facial nerve just anterior to the ear and watching for ipsilateral facial twitching, and check Trousseau's sign with a blood pressure cuff inflated above systolic for three minutes if Chvostek's is positive or equivocal. Serum calcium confirms it, but the bedside signs let you act before the lab result is back.
Immediate interventions
For suspected hematoma with airway compromise, this is not a wait-for-the-surgeon situation. Loosen or remove the outer dressing sutures at the bedside if you are trained and authorized to do so, call for immediate surgical and anesthesia support, and have a tracheostomy or reintubation tray at hand, since the airway can close faster than a return to theatre can be arranged.
For stridor or voice change without an expanding hematoma, keep the patient upright, apply supplemental oxygen, and escalate to the surgical team promptly; bilateral cord paralysis may need emergency reintubation even without a hematoma.
For confirmed or strongly suspected hypocalcemic tetany, give IV calcium gluconate as ordered, since this is the standard first-line treatment for symptomatic post-thyroidectomy hypocalcemia, and keep the patient on seizure precautions if calcium is severely low, since profound hypocalcemia can progress to laryngospasm or seizure.
Ongoing nursing management
Trend serum calcium daily, along with phosphate and, where ordered, parathyroid hormone level, since PTH tells you whether the gland tissue that remains is functioning or whether the hypocalcemia is likely to be prolonged. A low PTH alongside low calcium confirms parathyroid injury rather than another cause.
Keep oral calcium and vitamin D supplementation on schedule if they've been started, and reassess Chvostek's and Trousseau's signs at each shift rather than only at admission, since parathyroid function can continue to decline over the first several days before it stabilizes.
Continue neck checks and voice checks every shift for the duration of the admission, not just in recovery. Late hematomas are uncommon but not impossible, and a voice that was clear on day one but becomes hoarse on day two still warrants a call to the surgical team.
Patient and family education
Teach the patient to recognize and report tingling around the mouth or in the fingertips themselves, since they will often notice early hypocalcemic symptoms before a scheduled assessment catches it, particularly overnight or after discharge.
Explain why voice changes matter enough to report immediately rather than dismissing them as normal post-surgical hoarseness. A mild, improving hoarseness from surgical manipulation is expected; a voice that is getting worse, or breathing that feels effortful, is not, and the patient needs a clear line for telling the two apart.
If the patient is discharged on calcium and vitamin D, or on levothyroxine replacement, make sure they understand these are not interchangeable with a missed dose being harmless. Calcium supplementation in particular may need to continue for weeks while parathyroid function, if only bruised rather than removed, recovers.
How this appears on the NCLEX
Expect a priority question rather than a knowledge-recall question. The exam typically gives you a postoperative thyroidectomy patient with two or three findings at once, for example neck swelling plus a change in voice plus tingling around the mouth, and asks which finding you assess or act on first. The airway-related finding almost always outranks the calcium-related one when both appear together, because airway obstruction kills in minutes and hypocalcemia does not.
Watch for questions that use the 24-to-48-hour timeframe deliberately, since that detail is the signal that the correct answer involves calcium and the parathyroids rather than the airway. A question describing tetany symptoms 'on the second postoperative day' is testing whether you connect timing to mechanism, not just whether you recognize tetany.
Chvostek's sign shows up specifically as a distractor-elimination tool: if an answer option describes tapping the cheek near the ear and watching for facial twitching, that option is testing calcium status, and it is the right assessment to pair with a tetany-suggestive stem.
The next step on this is the same as on everything else here: answer questions and read the rationales. Our endocrine practice questions are the closest set to what this page covers.
Common questions
What is the first thing to assess after a thyroidectomy?
Airway and neck. Check the front and back of the dressing for swelling or bleeding, and check the patient's voice and breathing as soon as they're responsive, before moving to calcium-related checks.
Why does tetany after thyroidectomy show up a day or two later instead of right away?
Because it reflects parathyroid disturbance, not the surgery itself. If the parathyroid glands were bruised or devascularized during dissection, calcium regulation fails gradually, and hypocalcemic symptoms typically emerge within 24 to 48 hours as calcium drops.
What does a positive Chvostek's sign mean after thyroidectomy?
It means tapping over the facial nerve near the ear produces an ipsilateral facial twitch, a bedside indicator of neuromuscular irritability from hypocalcemia. In this postoperative context it points to parathyroid injury and should prompt a serum calcium check and escalation.
Is hoarseness after thyroidectomy always a laryngeal nerve injury?
Not necessarily. Mild hoarseness from intubation or surgical manipulation is common and usually improves. Worsening hoarseness, stridor, or an inability to speak is different and needs immediate escalation, since it can indicate laryngeal nerve injury or airway compromise.
How is post-thyroidectomy hypocalcemia treated?
Symptomatic hypocalcemia is treated with IV calcium gluconate as ordered, followed by oral calcium and vitamin D supplementation, with serum calcium and PTH trended to guide how long supplementation continues.