Inhaled Nitric Oxide in Brain Injury

Status Completed

Clinical Trial Summary

This study will evaluate the changes in respiratory mechanics following traumatic brain injury and determine the effect of inhaled nitric oxide on gas exchange.

Clinical Trial Description

Intubation and mechanical ventilation are common treatments in the care of patients with traumatic brain injury (TBI). Intubation allows for airway control and facilitates removal of respiratory secretions. Mechanical ventilation allows control of arterial carbon dioxide to aid in control of intracranial pressure. Recent evidence suggests that lung protective ventilation (tidal volumes of 6 ml/kg of predicted body weight and moderate positive end expiratory pressure) improves outcomes following brain injury and reduces brain-lung cross talk. The treatment of respiratory failure in TBI must balance the need to improve lung function with the negative consequences of increased intrathoracic pressure on mean arterial pressure, intracranial pressure and venous return. Traditional treatment of increasing positive end expiratory (PEEP) and mean airway pressure then, represent competing interests. Methods for improving arterial oxygenation while avoiding negative hemodynamic effects are needed. The impact of head injury on respiratory mechanics has been studied in just a few clinical investigations. (1-3) Of note, the earliest of these noted that the ventilation perfusion (V/Q) matching following TBI was not the result of lung collapse or parenchymal lung disease but secondary to alterations in perfusion. There are three possibilities for this finding: 1. redistribution in regional perfusion, which is partially mediated by the hypothalamus 2. pulmonary microembolism, leading to increased dead space 3. lung surfactant depletion due to excessive sympathetic stimulation and hyperventilation. The introduction of inhaled pulmonary vasodilators such as inhaled nitric oxide or aerosolized epoprostenol offer an opportunity to improve oxygenation in patients with TBI without increasing airway pressures in the face of V/Q inequalities. This study will evaluate the changes in respiratory mechanics following TBI and determine the effect of inhaled nitric oxide on gas exchange. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT03260569
Study type	Interventional
Source	University of Cincinnati
Contact
Status	Completed
Phase	Phase 3
Start date	December 12, 2018
Completion date	December 28, 2023

View Details

See also
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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.