OPTIMAL NEGATIVE PRESSURE FOR CLOSED THORACIC DRAINAGE COMBINED WITH NEGATIVE PRESSURE SUCTION IN TREATMENT OF PRIMARY PNEUMOTHORAX
Objective To investigate the feasibility and optimal negative pressure for closed thoracic drainage combined with low negative pressure in the treatment of primary pneumothorax.Methods Sixty patients with primary pneumothorax who were admitted to our hospital were enrolled as subjects.Those patients received closed thoracic drainage combined with continuous low negative pressure suction immediately after admission.The patients were divided into group A (-0.5 kPa),group B (-1.0 kPa),and group C (-1.5 kPa) based on the value of negative pressure.The duration of moderate to severe chest pain,time to bubble overflow,time to recovery of negative pressure,and retention time of chest tube were observed in the three groups.Results Groups B and C had significantly shorter time to bubble overflow,time to recovery of negative pressure,and time to chest tube extraction than group A (F=3.504-4.068,P＜0.05).There was no significant difference in the duration of chest pain be tween the three groups (P＞0.05).There was no significant difference in any index between group B and group C (all P＞0.05).Conclusion For closed thoracic drainage combined with continuous negative pressure suction,a pressure of 1.0 or-1.5 kPa achieves better treatment outcomes than that of-0.5 kPa and effectively promotes pulmonary reexpansion.
NETL
NSTL
万方数据
维普
