AT CHEST 2014
AUSTIN, TEX. (FRONTLINE MEDICAL NEWS) – Smokers offered home oxygen therapy were found to be at twice the risk for burn injuries, based on data from a retrospective study.
Even so, almost all the home oxygen therapy (HOT) burn victims were discharged with a prescription for oxygen, including the 15% of patients who had incurred similar injuries at least once, and in some cases, three times.
“I have a problem with this,” said Dr. Mary Baker , a critical care fellow at Indiana University and a medical ethics fellow at the university’s Richard M. Fairbanks Burn Center at Wishard-Eskenazi Health, both in Indianapolis. Dr. Baker presented the findings at the annual meeting of the American College of Chest Physicians.
“Should we be prescribing oxygen to patients who smoke? Maybe the bigger question is [whether] it is ever ethically defensible to take oxygen away once someone has sustained a combustion injury from smoking while using HOT,” she said.
Dr. Baker and her colleagues conducted a chart review of patients admitted to a single site for home oxygen–related burns between 2008 and 2013. They found that 55 of all such burn unit admissions were smokers, representing 4% of the center’s annual admissions rate and twice that of the national burn rate for smokers in general. Nearly all the patients, a balance of men and women with a median age of 61 years, were using HOT for chronic obstructive pulmonary disease.
“The location of the burns, probably not surprisingly, was the face. Probably the most common was the nasal cannula,” Dr. Baker said.
Although nearly three-quarters of the 55-member cohort had less than a 5% total body surface–area burn, Dr. Baker said that in a patient population with baseline respiratory compromise and respiratory failure, this was an alarming rate of morbidity, particularly since half of the injured were intubated, and bronchonscopic exam revealed a third of these patients also had inhalation injuries.
“And here’s the kicker,” said Dr. Baker. “Eight deaths over 5 years. This is huge. So when these [individuals] get burned, it’s often really bad. Several of them had house fires, and we were able to find in the chart where other people [in the home] were burned and admitted to the hospital.”
Still, after a median 5-day stay, almost all the patients who survived were discharged with prescriptions for HOT, including the so-called “repeat offenders.” Because nearly half of all surviving smoking-related HOT patients were discharged to a higher level of care, this cohort tended to have higher health care utilization rates as well, Dr. Baker noted.
A surprise finding was that more than a quarter of the cohort had either current or concomitant problems with substance abuse. “We were not expecting that, and it has not been previously reported,” Dr. Baker said.
The data demonstrate a need for the screening of HOT patients as to whether they smoke and whether they have substance use issues, she said. If either condition applies, then faster follow-up and, potentially, counseling could be offered, including better education about the risks of oxygen therapy. “Currently, we have no formalized way to educate patients on the dangers of those tanks in the home,” said Dr. Baker.
The data raise questions about the risk-benefit ratio of prescribing any breathing aid to COPD patients who are also smokers.
“I don’t know how much sense it makes to keep throwing these inhalers, which cost hundreds of dollars a month, at people who continue to smoke,” Dr. Baker said in an interview. “We take all comers, and we think oxygen therapy helps, and prolongs life, but when you factor in smoking, we don’t really know what the risks and benefits are.”
A large study population would be needed to determine the risks and benefits, she added.
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