Flow volume curve: A diagnostic tool in extrathoracic airway obstruction

Al-Khlaiwi, Thamir

doi:10.12669/pjms.36.4.2283

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…This patient's rare conglomeration of complications, including a vascular ring, a pulmonary sling, atrial and ventricular septal defects, and concomitant tracheal rings, requires the utmost accuracy in diagnosis. The use of FV-loops in diagnostic techniques can reduce mortality related to upper airway obstructions [7].…”

Section: Discussionmentioning

confidence: 99%

Use of Flow-Volume Loops on a Mechanically Ventilated Pediatric Patient as a Diagnostic Tool for Fixed Airway Obstruction

Ward¹,

Pezzano²,

Nathan³

et al. 2023

Cureus

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The flow-volume loop (FV-loop) provides a graphical representation of the inspiratory and expiratory flow of both mechanically provided breaths and patient-triggered breaths during invasive mechanical ventilation. The FV-loop on the ventilator-delivered breath displays the active inspiratory flow reflective of lung compliance and the passive expiratory flow reflective of airway resistance. Our case report highlights the importance of the FV-loop in determining a fixed airway obstruction. A five-month-old male presented to the emergency department with worsening respiratory distress in the setting of rhino-enterovirus. He was admitted to the pediatric intensive care unit (PICU) and intubated for acute hypoxic respiratory failure. The findings on his ventilator FV-loop graphics denoted a fixed airway obstruction, as seen by the truncation of inspiratory and expiratory flow. The patient was subsequently found to have a left pulmonary artery (LPA) sling with a vascular ring and several complete tracheal rings. He was transferred to a referral institution for operative management, returned to our PICU, and discharged home after 47 days of hospital management. During mechanical ventilation, FV-loops can be effectively utilized to assist in the diagnosis of fixed intraor extra-thoracic airway obstructions.

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Section: Discussionmentioning

confidence: 99%

Use of Flow-Volume Loops on a Mechanically Ventilated Pediatric Patient as a Diagnostic Tool for Fixed Airway Obstruction

Ward¹,

Pezzano²,

Nathan³

et al. 2023

Cureus

View full text Add to dashboard Cite

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Flow-Volume Loop: A Tool for Evaluating the Position of the Laryngeal Mask Airway Intraoperatively

Nikolopoulou,

Katsimperis,

Nikolaki

et al. 2024

Cureus

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The flow-volume loop (FVL) is a valuable yet often underutilized tool for assessing the placement of the laryngeal mask airway (LMA) during surgery. It provides real-time graphical data on airway patency and ventilation. These cases examine the role of FVL in identifying LMA misplacement. Abnormal patterns, such as truncated expiratory curves and reduced peak flows, can indicate partial obstructions that might otherwise go unnoticed. By monitoring FVL, clinicians can quickly detect and correct misalignment, thereby enhancing patient safety and ventilator effectiveness during surgical procedures.

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Flow volume curve: A diagnostic tool in extrathoracic airway obstruction

Cited by 2 publications

References 4 publications

Use of Flow-Volume Loops on a Mechanically Ventilated Pediatric Patient as a Diagnostic Tool for Fixed Airway Obstruction

Use of Flow-Volume Loops on a Mechanically Ventilated Pediatric Patient as a Diagnostic Tool for Fixed Airway Obstruction

Flow-Volume Loop: A Tool for Evaluating the Position of the Laryngeal Mask Airway Intraoperatively

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