Preoperative Plasmapheresis for Elective Thymectomy in Myasthenia Patient: Is It Necessary?

Table 3

Postoperative outcomes of no plasmapheresis or immunoglobulin group compared with plasmapheresis or immunoglobulin group adjusted by propensity score.

Variables	Risk ratio	95% Confidence interval	𝑃 value
Immediate extubation after surgery (adjusted for PS^a)	2.94	0.98–8.79	0.054
Postoperative complications; (adjusted for PS^a)	1.00	0.25–3.97	0.989
30-day mortality; (adjusted for PS^a)	0.05	0.00–13.63	0.296
Length of hospital stay* (adjusted for PS^a)	0.64	(−0.63)–1.90	0.325

PS^a: propensity score calculated by logistic regression analysis considering gender, age, underlying disease, Osserman classification, history of myasthenic crisis at any time and within one month before surgery, ocular involvement, neck muscle, upper and lower extremities motor power, respiratory involvement, bulbar involvement, drug used, and FVC as determinants of receiving preoperative plasmapheresis.
*Mean difference.