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Partnerships between primary care physicians and pulmonologists may improve vaccination rates for patients with COPD.
Ensuring patients with chronic obstructive pulmonary disease (COPD) receive pulmonary infection-related vaccinations is paramount to care of such populations.
Findings from a new study show that patient referral to a pulmonary clinic was associated with increased odds of receiving influenza and pneumococcal vaccinations.
“Despite the importance of providing guideline-based care, adherence to Global Initiative for Chronic Obstructive Lung Disease (GOLD) recommendations has been sub-optimal, including pharmacologic and non-pharmacologic treatments,” wrote the investigators.
The investigative team, led by Solmaz Ehteshami-Afshar, MD, MSc, Internal Medicine, Yale University School of Medicine, performed a retrospective cross-sectional analysis among COPD patients receiving primary care.
The aim of the study was to ascertain adherence to vaccinations so as to inform quality improvement targets.
Vaccinations and COPD
The study was conducted at a single clinical site from January 1, 2018-December 31, 2019, and enrolled patients diagnosed with COPD according to international classification of disease, tenth revision codes.
The primary outcomes sought by the investigators were vaccinations for pneumococcal (PCV13), pneumococcal polysaccharide (PPSV23) and influenza (consecutively from 2017-2019).
"We identified vaccination records for PCV13 and PPSV23 (including before the study period), influenza vaccination records, smoking status (current, former, never), age and gender of the patients by detailed chart review of PC and/or pulmonary text notes from the electronic health record,” they wrote.
Among 200 patients, the mean age was 70.5 years, and half were women.
Furthermore, 78 patients had a pulmonary subspecialty evaluation in the prior 3 years. These patients were more likely to be smokers (59%) and had a higher pack-year smoking history (48.4 pack-year versus 37.7 pack-year, respectively; P = .01).
Among this subpopulation, 20.5% had COPD-related hospitalization in the preceding 12 months—compared with 2.4% in those without a pulmonary subspeciality evaluation.
Ehteshami-Afshar and colleagues noted that in patients ≥ 65 years old, PCV13 and PPSV23 vaccination rates were significantly higher among patients referred to a pulmonary specialist (PCV13: 96.6% vs. 81.6%, P = .009; PPSV23: 94.8% vs. 84.7%, P = 0.03).
Compared to patients who were managed solely by primary care providers, influenza vaccination rates were higher for referred patients of all ages (2017 = 81%, referred, vs. 63%, non-referred; P = .008; 2018 = 80% vs. 62.5%, P = .008; 2019 = 70.5% vs. 52%, P = 0.011).
These same trends were consistent following multivariable models adjusting for age, gender and smoking status.
“Due to disappointingly low vaccination rate for pneumococcal and influenza, these results illustrate the importance of developing strategies to improve adherence to COPD guidelines for non-pharmacological care in both the PC and pulmonary subspecialty settings,” opined the investigators.
The team did acknowledge the uncertainty in whether vaccinations were provided during pulmonary subspecialty or primary care visitations.
“It is possible that primary care providers who refer patients to pulmonary may be more attuned to the COPD guideline care,” they wrote.
“Thus, partnered management of COPD by primary care and pulmonology may translate into improved overall COPD care.”
The study, ‘Does pulmonary subspecialty referral from primary care affect the adherence to vaccination recommendations in COPD patients?” was published online in Respiratory Research.