不同腹腔压对神经调节辅助通气中膈肌电活动和潮气量的影响

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Abstract Objective: To evaluate how IAP affects the EAdi and the tidal volume (VT) during NAVA was meaningful to set parameters of clinical ventilation. Methods: Forty-four patients in ICU were enrolled in this study. Inclusion criteria: over 18 years old adult who was going to use mechanical ventilation for over 72 hours at positive end-expiratory pressure (PEEP) 3-5 cmH2O (1 cmH2O=0.098 kPa). IAP was indirectly measured by injecting saline to bladder with 6 hours interval. The dividing line of high IAP and non-high IAP was set as 12 mmHg (1 mmHg=0.133 kPa) according to WSACS. By a EAdi catheter via nose EAdi was recorded with VT hourly. Results: EAdi was significant lower when IAP was over than 12 mmHg; and VT was significant higher when IAP was less than 12 mmHg. Conclusion: The changes of EAdi and VT under different IAP during NAVA: when IAP was high, EAdi decreases while VT increases and vice-versa.

Key words： pulmonary ventilation intra-abdominal pressure tidal volume electrical activity of the diaphragm

Received: 23 July 2016

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	WU Huayong
	ZHANG Weiwen

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https://xb.wmu.edu.cn/EN/ OR https://xb.wmu.edu.cn/EN/Y2017/V47/I3/225

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