
Pretty bad huh? You can't even see the other side, or the ships nearby. So anyway this evening, once of my college juniors (already graduated and works with spinal cord injury clients) asked about standardized assessments to assess our client's capacity in different weather/climate conditions. He pointed out that clients with spinal cord injury at T6 and above are at risk of autonomic dysreflexia (AD) should they be exposed to any noxious stimuli, and also said that weather can affect the performance level of clients with neurological or physical deficits. Our discussion is the inspiration which lead to this post.
I do not know enough about spinal cord injuries to be talking about how weather or climate changes affects AD, so let's look into how weather affects people with COPD. Frankly speaking, weather/climate is a very important aspect when it comes to COPD. While it may indirectly affect the performance of clients with other diseases or dysfunctions, COPD is directly affected by it. COPD clients can be considered a very "selective" group of clients - too hot won't do, and neither would the extreme cold. Well, it's usually same for everyone of us, it's just that instead of shivering or wiping sweat, these people are gasping for breath and fighting to live. There has been many studies on the effect of cold weather on COPD, but little is known about hot weather. Some well-read people are even surprised that the heat can cause exacerbation. Why? My take is that most researches are done in places which snow, hence they usually do not really achieve a high enough level of heat to cause exacerbation. That's why little is known about how heat affects COPD. This is supported by the statistics from SCImago Journal & Country Rank, which shows the top 5 countries that do medical research from 1996 til now are:
1. United States of America
2. United Kingdom
3. Canada
4. Germany
5. Australia
Out of the top 5 countries, 3 of them (which just so happen to be the top 3) are terribly cold (with the exception of southern states of the USA). Coincidentally, many researches on COPD that I've come across are either American or British. However, I did managed to find a report which was written last year about a research on how extreme heat affected COPD. It's conducted by Dr. Meredith McCormack from John Hopkins university. The article can be read here. However, I couldn't find any links to the research paper or abstract. It isn't even listed as her select publications on her profile in the John Hopkins University directory. It's rather tempting for me to contact her and talk about it.
While little research has been done on client's with COPD in the heat, this problem is very real, and affects a lot of people, especially in Malaysia. Many clients complain of feeling short of breath once they walk out of the shopping mall or step out of a car into the extreme heat of a Malaysian afternoon. However, many claim that the effect can be lessened if the increase of heat is gradual. The rainy season is also another factor which can cause the symptoms of COPD to worsen. Rainy weather means higher humidity, which is a no-no for clients, as it can cause mold to form in the client's environment. Clients are also more prone to flu during the rainy season, which ultimately contributes to reduced performance. Haze can affect clients pretty badly as well. Many of them cannot stand the haze, and will feel more out of breath compared to normal. However, I still have not personally seen any readmissions despite the haze (not to mention the chest ward seems surprisingly empty). A colleague suggested that they might have either stayed indoors or might not have made it to the hospital, but I'm hoping it's not the latter.