Table 2 Characteristics of studies (n = 7).
Studies | Age (years)a | N | Female (%) | Procedures | Surgical timea | Outcomes | POST severity | Country |
|---|---|---|---|---|---|---|---|---|
Chun 2015 | 47 vs. 46 | 31 vs. 33 | 69.80 | Thyroid lobectomy | NA | Acoustic analyses were performed preoperatively and at 48 h and 2 weeks postoperatively | LPS 0–10 | Korea |
Gong 2020a | 43 vs. 43 | 67 vs. 65 | 79.50 | Radical thyroidectomy | 50 vs. 54 | Intraoperative ventilation leak volume, peak airway pressure, and partial pressure of end-tidal carbon dioxide | NA | China |
Gong 2020b | 43 vs. 42 | 45 vs. 45 | 81.10 | Radical thyroidectomy | 54 vs. 48 | Sore throat, numbness and hoarseness at 1, 24, and 48 h after surgery | VAS 0–10 | China |
Kotsovolis 2019 | 51 vs. 49 | 38 vs. 40 | 84.60 | Total thyroidectomy and parathyroidectomy | 105 vs. 130 | Dysphagia, pharyngodynia, and incisional pain at 1, 6, 12, and 24 h after surgery. Secondary outcomes were the frequency of rescue analgesia (paracetamol) consumption and emergence cough | NRS 0–10 | Greece |
Ryu 2014 | 49 vs. 47b | 36 vs. 37 | 82.20 | Total thyroidectomy | 105 vs. 105b | Sore throat, hoarseness, dysphagia, and cough were assessed at 1, 24, and 48 h after surgery | NRS 0–100 | Korea |
Liao 2021 | 40 vs. 40 | 35 vs. 30 | 66.20 | Endoscopic thyroid surgery | 54 vs. 57 | Time to establishment of artificial airway and success rate, hemodynamics, oxygen saturation, peak airway pressure and adverse effects | NA | China |
Ning 2022 | 45 vs. 46 | 49 vs. 49 | 76.5 | Radical thyroidectomy | 80 vs. 79 | Primary outcome: Incidence of sore throat Secondary outcomes: Severity of sore throat; the incidence and severity of hoarseness | VAS 0–10 | China |
