Emergency management of patient with upper airway obstruction

1985 ◽  
Vol 3 (1) ◽  
pp. 25-36
Author(s):  
Paul J. Donald
Keyword(s):  
Emergency Management ◽  
Airway Obstruction ◽  
Upper Airway ◽  
Upper Airway Obstruction

Using helium-oxygen mixtures in the emergency management of acute upper airway obstruction

1989 ◽  
Vol 18 (6) ◽  
pp. 688-690 ◽  
Author(s):  
Jeffrey M Boorstein ◽  
Stephen M Boorstein ◽  
Gary N Humphries ◽  
Charles C Johnston
Keyword(s):  
Emergency Management ◽  
Airway Obstruction ◽  
Upper Airway ◽  
Upper Airway Obstruction

scholarly journals Critical upper airway obstruction as the first symptom of acute myeloid leukemia - an anesthesiologic reminder

2020 ◽  
Vol 10 (2) ◽  
Author(s):  
Øyvind Bruserud ◽  
Øystein Wendelbo ◽  
Nils Vetti ◽  
Frederik Kragerud Goplen ◽  
Silje Johansen ◽  
...  
Keyword(s):  
Emergency Management ◽  
Airway Obstruction ◽  
Myeloid Leukemia ◽  
Early Recognition ◽  
Upper Airway ◽  
Upper Airway Obstruction ◽  
Airway Control ◽  
Computer Tomography Scan ◽  
Surgical Tracheotomy ◽  
Tomography Scan

Acute upper airway obstruction can be fatal. Early recognition of airway distress followed by diagnostic laryngoscopy and prompt intervention to secure airway control is crucial. We here present a 62-year old male patient who presented with cough and increasing respiratory distress for three weeks. Within the next 24 h, he developed symptoms of critical upper airway obstruction, endotracheal intubation was not possible, and an acute surgical tracheotomy was performed to retain patent airways. A computer tomography scan revealed severe laryngopharyngeal soft tissue thickening and upper airway obstruction caused by leukemic infiltration. He was diagnosed with acute leukemia and responded to induction chemotherapy. This case report points out the importance of establishing the diagnosis of critical upper airway obstruction in patients presenting with respiratory symptoms, and highlights the emergency management of airway obstruction due to malignant infiltration of leukemic blasts.

scholarly journals Classification of directionally specific vagus nerve activity using an upper airway obstruction model in anesthetized rodents

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
P. Sabetian ◽  
Y. Sadat-Nejad ◽  
Paul B. Yoo
Keyword(s):  
Airway Obstruction ◽  
Upper Airway ◽  
Low Noise ◽  
Upper Airway Obstruction ◽  
Gaussian Kernel ◽  
Recording Electrode ◽  
Cuff Electrode ◽  
Nerve Cuff ◽  
Svm Model ◽  
Nerve Cuff Electrode

AbstractElectrical signals from the peripheral nervous system have the potential to provide the necessary motor, sensory or autonomic information for implementing closed-loop control of neuroprosthetic or neuromodulatory systems. However, developing methods to recover information encoded in these signals is a significant challenge. Our goal was to test the feasibility of measuring physiologically generated nerve action potentials that can be classified as sensory or motor signals. A tetrapolar recording nerve cuff electrode was used to measure vagal nerve (VN) activity in a rodent model of upper airway obstruction. The effect of upper airway occlusions on VN activity related to respiration (RnP) was calculated and compared for 4 different cases: (1) intact VN, (2) VN transection only proximal to recording electrode, (3) VN transection only distal to the recording electrode, and (4) transection of VN proximal and distal to electrode. We employed a Support Vector Machine (SVM) model with Gaussian Kernel to learn a model capable of classifying efferent and afferent waveforms obtained from the tetrapolar electrode. In vivo results showed that the RnP values decreased significantly during obstruction by 91.7% ± 3.1%, and 78.2% ± 3.4% for cases of intact VN or proximal transection, respectively. In contrast, there were no significant changes for cases of VN transection at the distal end or both ends of the electrode. The SVM model yielded an 85.8% accuracy in distinguishing motor and sensory signals. The feasibility of measuring low-noise directionally-sensitive neural activity using a tetrapolar nerve cuff electrode along with the use of an SVM classifier was shown. Future experimental work in chronic implant studies is needed to support clinical translatability.

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