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Table 1 Clinical and demographic characteristics of PTMC patients

From: Predictive factors of prolonged mechanical ventilation, overall survival, and quality of life in patients with post-thymectomy myasthenic crisis

Variable Number (%) or mean (SD)
Age (years) 39.6 (14.8)
Gender
 Male 31 (44.3%)
 Female 39 (55.7%)
BMI 22.3 (3.6)
Symptom duration (months) 21.1 (38.7)
Osserman’s classification
 I 5 (7.1%)
 IIa 28 (40.0%)
 IIb 30 (42.9%)
 III 5 (7.1%)
 IV 2 (2.9%)
MGFA classification
 I 5 (7.1%)
 IIa 13 (18.6%)
 IIb 16 (22.9%)
 IIIa 9 (12.9%)
 IIIb 21 (30.0%)
 IVa 1 (1.4%)
 IVb 2 (2.9%)
 V 3 (4.3%)
QMG score 14.1 (5.7)
Preoperative medical therapy 69 (98.6%)
 Prednisolone 25 (21.4%), 8.2 (19.4)
 Plasma exchange 4 (5.7%)
 Steroid pulse 9 (12.9%)
 Immunoglobulin 4 (5.7%)
 Pyridostigmine bromide 69 (98.6%)
 No preoperative medical therapy 1 (1.4%)
Autoimmune diseases
 Hyperthyroidism 5 (7.1%)
 Hypothyroidism 3 (4.3%)
 Gout 1 (1.4%)
 Rheumatoid arthritis 1 (1.4%)
 Systemic lupus erythematosus 1 (1.4%)
 Without autoimmune diseases 59 (84.3%)
Operation approach
 VATS 53 (75.7%)
 Transsternal 17 (24.3%)
Clavien-Dindo classificationa
 0 18 (25.7%)
 I 1 (1.4%)
 II 41 (58.6%)
 IIIa 4 (5.7%)
 IIIb 2 (2.9%)
 IVa 4 (5.7%)
Mechanical ventilation duration (h) 203.0 (436.3)
Duration of hospital stay (days) 30.3 (28.3)
  1. a(i) Grade 0: no complications, (ii) grade 1: deviation from normal postoperative course without need for medical intervention, (iii) grade 2: complications requiring pharmacological treatment, (iv) grade 3: complications requiring invasive intervention, (v) grade 4: life-threatening complications requiring intensive care unit management except trachea intubation, and (vi) grade 5: death [11]