Management of Dyspnea in Advanced Cancer Guideline

An interview with Dr. David Hui from MD Anderson Cancer Center and Dr. Margaret L. Campbell from Wayne State University, co-chairs on “Management of Dyspnea in Advanced Cancer: ASCO Guideline.” This guideline outlines a hierarchical approach to dyspnea management, beginning with identifying and managing potentially reversible causes, followed by the use of non-pharmacologic interventions, and then pharmacologic interventions. Read the full guideline at www.asco.org/supportive-care-guidelines TRANSCRIPT SPEAKER: The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions. Guests on this podcast express their own opinions, experience, and conclusions. The mention of any product, service, organization, activity, or therapy should not be construed as an ASCO endorsement. BRITTANY HARVEY: Hello, and welcome to the ASCO Guidelines Podcast Series, brought to you by the ASCO Podcast Network, a collection of nine programs covering a range of educational and scientific content and offering enriching insight into the world of cancer care. You can find all the shows, including this one, at podcast.asco.org. My name is Brittany Harvey, and today I'm interviewing Dr. David Hui from MD Anderson Cancer Center in Houston, Texas, and Dr. Margaret Campbell from Wayne State University in Detroit, Michigan, co-chairs on "Management of Dyspnea in Advanced Cancer: ASCO Guideline." Thank you for being here, Dr. Hui and Dr. Campbell. DR. DAVID HUI: Thank you. It's wonderful to be here. DR. MARGARET CAMPBELL: Yeah, it's my pleasure. BRITTANY HARVEY: First, I'd like to note that ASCO takes great care in the development of its guidelines and ensuring that the ASCO conflict of interest policy is followed for each guideline. The full conflict of interest information for this guideline panel is available online with the publication of the guideline in the Journal of Clinical Oncology. Dr. Hui, do you have any relevant disclosures that are directly related to this guideline topic? DR. DAVID HUI: I have no relevant disclosures. BRITTANY HARVEY: Thank you. And Dr. Campbell, do you have any relevant disclosures that are related to this guideline topic? DR. MARGARET CAMPBELL: No, I do not have any relevant disclosures. BRITTANY HARVEY: Thank you. Then let's get into some of the guideline content. So first, Dr. Hui, can you give us a general overview of the purpose of this clinical practice guideline? DR. DAVID HUI: Yeah. This clinical practice guideline is on dyspnea in patients with advanced cancer. And this symptom of shortness of breath, or dyspnea, is very common in our patients and extremely distressing. And the evidence base is rapidly evolving, so the purpose of this guideline is then to summarize the up-to-date information and provide some recommendations for clinical practice to help alleviate this very challenging symptom. BRITTANY HARVEY: Great. Then let's review some of those key recommendations of this guideline. So Dr. Campbell, what is recommended for screening and assessment of dyspnea in patients with advanced cancer? DR. MARGARET CAMPBELL: Well, as David mentioned, this is a highly prevalent symptom. But we know that in clinical practice, sometimes patients won't disclose their symptom unless they're asked. And it gives us an opportunity to be certain that we don't overlook the symptom, particularly when it's in the early stages, mild or moderate stages, where we can intervene rapidly. So in order to treat a symptom, we have to know that the symptom exists. So in the guideline, we recommend at every clinical encounter that there be an assessment for dyspnea. So every clinical encounter could be every time the patient presents in the outpatient clinic, or it could be every day if the patient is an inpatient. Every day on rounds, or every time vital signs are obtained, there would be an assessment of the patient's dyspnea. BRITTANY HARVEY: Great. Then, reading through this guideline, it takes a hierarchical approach to the management of dyspnea, addressing first potentially reversible causes, then the use of non-pharmacologic interventions, and finally pharmacologic interventions. So first, what does the guideline state regarding addressing those potentially reversible causes of dyspnea? DR. DAVID HUI: Yeah, well, this is a very important aspect that you highlighted is that we really want clinicians to remember that it's not just about treating this symptom. It's ideally identifying what are the causes of shortness of breath that we could reverse. And in many patients, there may be multiple factors contributing to the shortness of breath. Some patients may have some effusion, perifusion contributing to it. They may also have underlying emphysema. And other times they may have some complications, such as blood clots. And so it's important to kind of identify the issues that may be at stake. And some of them are very treatable, and patients may have significant improvement in their shortness of breath right away. So I think it's a combination of identifying the complications and comorbidities in those patients. And of course that along with treating the cancer if the cancer is the cause of the dyspnea as well. BRITTANY HARVEY: Great. Then so after addressing those potentially reversible causes, Dr. Campbell, what are the recommended non-pharmacologic interventions? DR. MARGARET CAMPBELL: Well, in the case of a patient whose dyspnea is not severe but is a difficult to tolerate symptom, we propose that the clinician begin with a hierarchical approach from the easiest, simplest interventions that are non-pharmacologic that may actually help improve the symptom experience. So that might be as simple as changing the patient's position. And depending on where their cancer is located, they may find that they are more comfortable sitting up straight propped with pillows, for example. In addition, circulating air around the face has a fairly strong evidence base. And that can be accomplished, weather permitting, by putting the patient's chair near an open window. Or it can be accomplished with a small handheld fan blowing on the face. For some patients whose blood oxygen levels are low, then the application of supplemental oxygen may be helpful to correct the low blood oxygen. Those are the major interventions that we would suggest, but there could be others. If the patient is still ambulatory, then perhaps a walking aid, avoiding stairs. And some of that comes back to our comprehensive assessment. If we could determine what triggers the patient's shortness of breath, then perhaps we can suggest interventions to minimize that, like pacing activity. So similarly, if the patient's in the hospital but has dyspnea, we would want to pace their clinical activity. We wouldn't want them to have their bed, bath, their breakfast, their linen change, their physical therapy all in the same short period of time. We would want to see those interventions staggered through the day. BRITTANY HARVEY: Definitely. That makes a lot of sense. So then, Dr. Hui, what pharmacologic interventions are recommended for patients with advanced cancer and dyspnea? DR. DAVID HUI: Yeah, and so building on Dr. Campbell's discussion of the non-pharmacologic interventions, sometimes patients will continue to have quite a bit of shortness of breath. Or it's a very acute or severe presentation, such as in the hospital setting, then we do recommend some pharmacologic interventions. So the front line measure for that would be systemic opioids. And I recognize that, nowadays, opioids, there's still a lot of stigma around the use of it and concerns. But it is after careful review by the committee and based on the existing evidence that we do recommend this as the main pharmacologic agent. For patients, of course, the use of opioids need to be carefully monitored, and patients should be educated very carefully on how to use them properly for shortness of breath. There are a number of other pharmacologic agents that may be considered for selected populations, other than opioids. So if patients have a higher level of anxiety, then a short-acting benzodiazepine may be considered for those individuals. And for patients with more structural causes of shortness of breath, such as airway obstruction, systemic corticosteroids may be considered. And for patients with airway obstruction, then bronchodilators may be helpful as well, although the evidence around that is still on the weaker side. And there are some patients who, despite very active intervention with many of these non-pharmacologic and pharmacologic measures, who continue to have very severe shortness of breath. And for those who are, let's say, in a palliative care unit setting and have refractory dyspnea, palliative sedation is mentioned as an option for patients as a last resort. BRITTANY HARVEY: OK, thank you both for reviewing those interventions for patients. So Dr. Campbell, in your view, why is this guideline important? And how will it change practice? DR. MARGARET CAMPBELL: Well, for a busy oncologic clinician who may not have a lot of time to search the literature because of a busy practice, what this puts in one place is an opportunity to do a quick guideline that could suggest a treatment course. For a palliative care provider, who may have more experience with non-cancer diagnoses, this guideline focuses on the patient with advanced cancer. So I think there's an opportunity for clinicians in both of those fields who would be taking care of advanced cancer patients to find a benefit. BRITTANY HARVEY: Definitely. And then finally, Dr. Hui, how will these guideline recommendations impact patients with advanced cancer? DR. DAVID HUI: Yeah, well, I'd like to echo what Dr. Campbell said. I would also say that perhaps one of the strongest recommendations of this guideline is actually for patients with dyspnea and advanced cancer to be referred to palliative care. Because dyspnea is such a multi-dimensional symptom and often just the tip of the iceberg in terms of what patients are going through. So just the very presence of it really highlights that there is likely a high supportive care burden, and it would be a good idea for a team specializing in relieving of this symptom to be there to work with the oncology team to help patients. So we hope that with this guideline, that there will be more patients who will have access to palliative care teams. And I think that will be one important impact. And there is a lot of evidence that palliative care can help our patients. And other, maybe, impacts, I think, down the road for maybe future patients would be that we highlighted that more research is really needed in this field. The guideline clearly highlighted some areas we need to work on for further research. And it is not easy to do research in dyspnea and cancer patients because these patients are so sick. And yet these are the very patients who need to have better interventions. And so with this guideline, we hope that it can stimulate further research and to support some patients in the future as well. BRITTANY HARVEY: Great. Well, it definitely sounds like these will have a positive impact for both researchers and for patients with advanced cancer. So I want to thank you both for your work on these guidelines. And thank you for taking the time to talk with me today, Dr. Campbell, and Dr. Hui. DR. DAVID HUI: It's my pleasure. DR. MARGARET CAMPBELL: Mine also. BRITTANY HARVEY: And thank you to all of our listeners for tuning in to the ASCO Guidelines podcast series. To read the full guideline, go to www.asco.org/supportive-care-guidelines. You can also find many of our guidelines and interactive resources in the free ASCO Guidelines app, available in iTunes or the Google Play store. If you have enjoyed what you've heard today, please rate and review the podcast. 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