Negative Pressure Pulmonary Hemorrhage after Laryngospasm during the Postoperative Period

In Soo Han; Bo Mi Han; Soo Yeon Jung; Jun Rho Yoon; Eun Yong Chung

doi:10.4266/acc.2016.00689

Negative Pressure Pulmonary Hemorrhage after Laryngospasm during the Postoperative Period

Acute Crit Care. 2018 Aug;33(3):191-195. doi: 10.4266/acc.2016.00689. Epub 2018 Aug 31.

Authors

In Soo Han¹, Bo Mi Han¹, Soo Yeon Jung¹, Jun Rho Yoon¹, Eun Yong Chung¹

Affiliation

¹ Department of Anestheiology and Pain Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.

Abstract

Negative pressure pulmonary hemorrhage (NPPH) is an uncommon complication of upper airway obstruction. Severe negative intrathoracic pressure after upper airway obstruction can increase pulmonary capillary mural pressure, which results in mechanical stress on the pulmonary capillaries, causing NPPH. We report a case of acute NPPH caused by laryngospasm in a 25-year-old man during the postoperative period. Causative factors of NPPH include negative pulmonary pressure, allergic rhinitis, smoking, inhaled anesthetics, and positive airway pressure due to coughing. The patient's symptoms resolved rapidly, within 24 hours, with supportive care.

Keywords: airway obstruction; hemoptysis; hemorrhage.

Publication types

Case Reports