A novel, rapid, and effective technique for whole lung lavage in patients with pulmonary alveolar proteinosis and silicosis: retrospective study

Table 2 Periprocedural data

	Result
Procedures, n	33
Indication, n (%)
PAP	30 (90.9)
Silicosis	3 (9.1)
Number of procedures per patient	2.0 [1.0, 2.0]
The interval between procedures, days	87.5 [60.0, 178.0]
WLL side, n (%)
Right	18 (54.5)
Left	11 (33.3)
Bilateral	4 (12.1)
Periprocedural vital signs
SpO₂
SpO₂% at OR admission	97.0 [96.0, 98.5]
Minimum intraprocedural SpO₂%	80 [76, 87]
Duration of intraprocedural SpO₂ < 94%, minutes	29 [6, 54]
SpO₂% at PACU discharge	98.0 [96.0, 99.0]
MAP
Minimum intraprocedural MAP, mmHg	57 [53, 61]
Duration of intraprocedural MAP < 65 mmHg, minutes	9 [2, 17]
EtCO₂
Maximum intraprocedural EtCO₂, mmHg	53 [45, 64]
Duration of intraprocedural EtCO₂ > 45 mmHg, minutes	7 [0, 40]
Duration of procedure, minutes	65 [58.5, 67.5]
Duration of mechanical ventilation ^a, minutes	118 [97, 195]
Intraprocedural use of ECMO, n (%)	2 (6.1)
Length of PACU stay, hours	3.2 [2.3, 4.5]
Transferred to ICU, n (%)	5 (15.2)
Length of ICU stay, hours	96 [48, 312]
Length of hospital stay ^a, days	2 [2, 3]
30-day mortality, n (%)	0 (0)

Categorical variables are presented as counts and percentages. Normally distributed continuous variables are presented as mean ± SD; non-normally distributed continuous variables are presented as median [IQR]. ^a excluding ICU patients. ECMO, extracorporeal membrane oxygenation; EtCO₂, end-tidal carbon dioxide; ICU, intensive care unit; MAP, mean arterial pressure; OR, operation room; OSA, Obstructive sleep apnoea; PACU, post-anaesthesia care unit; PAP, Pulmonary alveolar proteinosis; SpO₂, oxygen saturation; WLL, whole lung lavage

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