EMS, Field Identification Of Chronic Obstructive Pulmonary Disease (COPD)


Article Author:
Kevin McLendon


Article Editor:
Peter Edemekong


Editors In Chief:
Ron Feller
Grant Goold
Kyle Cohen


Managing Editors:
Avais Raja
Orawan Chaigasame
Carrie Smith
Abdul Waheed
Khalid Alsayouri
Frank Smeeks
Kristina Soman-Faulkner
Radia Jamil
Patrick Le
Sobhan Daneshfar
Anoosh Zafar Gondal
Saad Nazir
William Gossman
Pritesh Sheth
Hassam Zulfiqar
Navid Mahabadi
Steve Bhimji
John Shell
Matthew Varacallo
Heba Mahdy
Ahmad Malik
Mark Pellegrini
James Hughes
Beata Beatty
Nazia Sadiq
Hajira Basit
Phillip Hynes
Tehmina Warsi


Updated:
4/10/2019 2:14:03 PM

Introduction

Chronic obstructive pulmonary disease (COPD) is a common co-morbidity and cause of new complaints. Rapid recognition, assessment, and treatment are paramount to patient outcomes. Gone are the days of definitive airway management as first-line therapy. The scope of practice has expanded and the expectation of medical care to prevent respiratory collapse or failure along with it. With an aging population who spent much of their youth with high prevalence of smoking, COPD is a diagnosis that continues to rise as evidenced by the incidence of EMS calls and emergency room (ER) visits. Patients do not always recognize the diagnosis of COPD due to lack of medical access, desire to seek medical attention, or insufficient medical literacy. There is a clear increased predominance of COPD in lower-income areas with the above-increased risk factors. This care burden often lands on those providing emergency care. If the patient has a known diagnosis and is either known to you or can communicate thier diagnosis of COPD, it becomes straightforward to recognize their clinical condition. However, if they are unable, do not know, or have confounding disease processes, then it falls to the clinician to determine the etiology of the complaint and plan rapid, appropriate treatment.[1][2][1]

The Global Initiative for Chronic Obstructive Lung Disease (GOLD) recognizes COPD as the fourth leading cause of death worldwide, and it is expected to assume the number 3 spot by 2020. Most often, the reported complaint will be respiratory, for example, shortness of breath, difficulty breathing, dyspnea, or a cough. Additionally, it may also be complaints of chest pain, fever, or other broad complaints. If the patient is not in a life-threating condition, appropriate history and physical can guide the diagnosis and subsequent treatment. There are differential diagnosis that must be accurately assessed, as incorrect diagnosis can increase strain on a failing system and cause a rapid patient decline.[3]

Issues of Concern

In a poor resource setting, be it an ambulance, the wilderness, or any other pre-hospital setting, the EMS provider must utilize the tools available at their disposal. This places more emphasis on the history and physical exminaton, forcing the EMS professional to operate effectively and efficiently. If the patient has a known history of COPD, then they need only to determine if there is a baseline worsening of their disease or if there is a new etiology to sush patient's health status. If the patient denies a known history or is unable to provide a clear history, then the provider must assess as best as possible for known risk factors and red flags.[2][4]

History

Understand that some patients are not familiar with the term "COPD" and may know their disease by another name. The EMS professional should ask about lung disease, chronic bronchitis, or emphysema. If the patient is a poor historian, are there bystanders who know the patient and can help provide insight? Is there a significant smoking exposure (usually 40 pack years or greater), or dust/chemical exposure from work, what about family history? Alpha-antitrypsin deficiency is a rare cause, but a young patient in their 30s with a known family history and non-smoker may still have COPD. Otherwise, most patients with COPD are going to be older than 50 years old. Do they cough more days than not? Is there regular sputum production? Do they experience shortness of breath with activities of daily living or more difficulty completing tasks than age-matched peers? Can you look at the list of medications or do you see them laying around? Do they take medications like inhalers, nebulizer, albuterol, ipratropium, both combined, inhaled steroids, novel long-acting medications (tiotropium, fluticasone/salmeterol, fluticasone furoate/vilanterol, budesonide/formoterol)? Most importantly do they require supplemental oxygen at home, if so how much and how often. Many times patients are supposed to wear their oxygen more than they do, or you may also notice that they have extremely long supply hoses attached to a flow of 2 liters per minute. This length of cord diminishes the benefit greatly. Inquire if the patient is still smoking.[5][6][3][7]

The above establishes a baseline, follow up a history taking with recent changes to their normal routine. If they are short of breath, how long has it been? How far from their baseline, and what have they done thus far? The 3 big questions here are: increased oxygen demand/worsening shortness of breath? Increased cough? Increased Sputum? Note the answers and report them to the receiving facility.

Physical

An exam is focused on the cardiovascular and respiratory systems. The first thing you note as you approach the patient is always scene safety and general appearance. Is the patient in obvious distress? Are there signs of impending failed airway? One may see tripod position, altered mental status, gasping for air, or frank breath sounds. Is the patient able to speak in full sentences? Any deviation from the above indicates the rapid need for supplemental oxygen while obtaining additional needed information. Check capillary refill time while waiting for pulse-oximetry, auscultate lung sounds while your partner readies a 12 lead ECG. Note the abnormalities. If there is chest pain, is it positional, pleuritic, or tender? If the answer is yes to any of the above, the likelihood a cardiac origin is diminished, and concerns for respiratory etiology increase.[8][4][8]

A history and physical are never linear processes. The history, physical, and treatment are dynamic processes. An appropriate flow of patient care is developed over time; emphasis is placed on maintaining the patient’s ABCs (airway, breathing, circulation) as always.

Clinical Significance

While oxygen should never be withheld to someone with dyspnea, before initiation of further treatment, the need for differentiation of other etiologies is prudent. Previously in literature, there was a large concern for COPD patients losing their respiratory drive with prolonged supplemental oxygen at high levels. Recent studies have shown this to be of little concern in the initial 24 hours of treatment. You are unlikely to alter the hypercarbic respiratory drive of an acutely decompensating patient during the duration of standard care. However, treatment guidelines indicate a titration to the effect of supplemental oxygen, which means goal SpO2 92% or better, do not attempt to reach 100% and stay there, titrate down. Before positive pressure ventilation (PPV) or nebulized medication therapy, you must ensure your diagnosis of COPD without other underlying pathology.[4][7]

Before PPV ensure there is no pneumothorax, auscultate lung sounds bilaterally for diminished unilateral sounds, look for equal rise and fall of the chest, and ensure a midline trachea. Abnormalities here, especially after trauma are concerning for pneumothorax and PPV will acutely worsen the prognosis. Instead, treat appropriately with needle decompression if pneumothorax is suspected.[2][3][7]

Before nebulized albuterol, ipratropium, or lev-albuterol assess for cardiac etiology. Obtain an ECG to rule out ST elevation or dysrhythmias. Assess fluid status and auscultate lungs, wet lungs, pitting edema, white sputum, and worsening orthopnea, especially in a patient with known CHF is highly suspect. You can also assess for jugular venous distention or hepatojugular reflex to indicate fluid overload and a pump (cardiac) problem. If your unit has the equipment to monitor waveform capnography, this is the perfect opportunity. This can be performed in-line with PPV if necessary and depending on your model either as a nasal cannula underneath or on the mask itself. ‘Shark Fin’ with hypercarbia is the classic pattern produced by bronchiolar constriction and CO2 retention in COPD exacerbation and indicate the patient would benefit from bronchodilator (albuterol) therapy. However, if a normal pattern is visualized and the patient is a normocarbia concern for congestive heart failure (CHF) is greater, as this indicates a perfusion pathology with normal functioning ventilation. Albuterol and stimulants should be avoided in acute coronary syndromes, acute myocardial infarctions, and congestive heart failure exacerbations as the increased stress demand on the heart coupled with decreased filling time from tachycardia can worsen the strain and subsequent damage. Conversely, the treatment for cardiac and perfusion pathology is commonly sublingual nitroglycerin which may decrease perfusion while failing to improve ventilation in the COPD patient.[5][6][8]


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EMS, Field Identification Of Chronic Obstructive Pulmonary Disease (COPD) - Questions

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You respond to a dyspnea call and arrive to find the patient in the tripod position with pursed lips breathing. The patient notes a history of congestive heart failure (CHF) and chronic obstructive pulmonary disease (COPD) and is not sure what is causing their shortness of breath. What is the best way to differentiate which disease process is to blame?



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You respond to a medical complaint call and arrive to find a 74-year-old who states he has had increasing shortness of breath over the last three days. He states he has a terrible cough everyday normally and coughs up yellow sputum daily, however recently he has been coughing up green, and rust-colored sputum. He notes that he has had to increase his nasal cannula from 2 liters per minute up to 4 but still is having trouble. What underlying disease is most likely?



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Which patient is most likely to have chronic obstructive pulmonary disease (COPD)?



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You respond to a call about shortness of breath and arrive to find a 65-year-old male patient with known chronic obstructive pulmonary disease (COPD). He hands you the legal paperwork stating his wishes not to be intubated meeting state emergency medical services (EMS) standards. However he is very dyspneic, confused now, and his pulse oximetry reads 72% after administration on a 100% nonrebreather mask. What is your next best therapy?



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You respond to a patient for a "medical emergency" you arrive to see a patient who is very thin, older male, very pink skin and noted to have pursed lips breathing. What is the likely disease process in this patient?



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EMS, Field Identification Of Chronic Obstructive Pulmonary Disease (COPD) - References

References

An official American Thoracic Society public policy statement: Novel risk factors and the global burden of chronic obstructive pulmonary disease., Eisner MD,Anthonisen N,Coultas D,Kuenzli N,Perez-Padilla R,Postma D,Romieu I,Silverman EK,Balmes JR,, American journal of respiratory and critical care medicine, 2010 Sep 1     [PubMed]
Canadian Thoracic Society recommendations for management of chronic obstructive pulmonary disease - 2007 update., O'Donnell DE,Aaron S,Bourbeau J,Hernandez P,Marciniuk DD,Balter M,Ford G,Gervais A,Goldstein R,Hodder R,Kaplan A,Keenan S,Lacasse Y,Maltais F,Road J,Rocker G,Sin D,Sinuff T,Voduc N,, Canadian respiratory journal, 2007 Sep     [PubMed]
Efficacy and safety of once-daily QVA149 compared with twice-daily salmeterol-fluticasone in patients with chronic obstructive pulmonary disease (ILLUMINATE): a randomised, double-blind, parallel group study., Vogelmeier CF,Bateman ED,Pallante J,Alagappan VK,D'Andrea P,Chen H,Banerji D,, The Lancet. Respiratory medicine, 2013 Mar     [PubMed]
Systemic corticosteroids in chronic obstructive pulmonary disease: an overview of Cochrane systematic reviews., Wood-Baker R,Walters J,Walters EH,, Respiratory medicine, 2007 Mar     [PubMed]
Theophylline., Barnes PJ,, American journal of respiratory and critical care medicine, 2013 Oct 15     [PubMed]
Predictors of chronic obstructive pulmonary disease exacerbation reduction in response to daily azithromycin therapy., Han MK,Tayob N,Murray S,Dransfield MT,Washko G,Scanlon PD,Criner GJ,Casaburi R,Connett J,Lazarus SC,Albert R,Woodruff P,Martinez FJ,, American journal of respiratory and critical care medicine, 2014 Jun 15     [PubMed]
Efficacy of a brief intervention to improve emergency physicians' smoking cessation counseling skills, knowledge, and attitudes., Bernstein SL,Boudreaux ED,Cabral L,Cydulka RK,Schwegman D,Larkin GL,Adams AL,McCullough LB,Rhodes KV,, Substance abuse, 2009 Apr-Jun     [PubMed]
Smoking cessation and COPD., Tønnesen P,, European respiratory review : an official journal of the European Respiratory Society, 2013 Mar 1     [PubMed]

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