The diagnosis of TTN is usually clinical, based on the observation of symptoms such as rapid breathing (tachypnea), which exceeds 60 breaths per minute, grunting, nasal flaring, and mild retractions. A chest X-ray may show fluid in the fissures of the lungs and hyperinflation. Blood tests, including a complete blood count (CBC) and blood gases, may also be conducted to rule out other conditions.
