negative end-expiratory pressure


Also found in: Dictionary, Acronyms.

neg·a·tive end-ex·pi·ra·to·ry pres·sure (NEEP),

a subatmospheric pressure at the airway at the end of expiration.
Farlex Partner Medical Dictionary © Farlex 2012

negative end-expiratory pressure

A format for mechanical ventilation in which negative (sub-atmostpheric) pressure, i.e., suction, is applied during ventilation. Recent data suggest that it may be useful during CPR, and circulation may be significantly augmented by generation of a negative end-expiratory pressure (NEEP) between each breath.

Pros
NEEP raises the pressure gradient between the patient’s airway and the atmosphere (thereby increasing the expiratory flow rate), lowers the mean intrathoracic pressure over the regulatory cycle, and enhances the venous return and cardiac output.
 
Cons
NEEP predisposes to airway collapse, air trapping and alveolar rupture, which is not good for patients with decreased elastic recoil.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

negative end-expiratory pressure

Respiratory care A format for mechanical ventilation in which negative pressure–ie, suction is applied during ventilation. Cf PEEP.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

neg·a·tive end-ex·pi·ra·to·ry pres·sure

(NEEP) (neg'ă-tiv end-eks-pī'ră-tōr-ē presh'ŭr)
A subatmospheric pressure at the airway at the end of expiration.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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