Background: Patients with pulmonary embolism (PE) may suffer from long-term consequences, including decreased functional capacity. Data on pulmonary rehabilitation (PR) in patients with PE are scarce, and no data on outpatient PR are available so far. Methods: We analyzed data of 22 PE patients who attended outpatient PR due to exertional dyspnea. Patients underwent a multi-professional 6-week PR program. The primary outcome was change in 6-min walk test (6MWT). Secondary outcomes included changes in strength and endurance tests. To assess long-term benefits, follow-up was performed a median of 39 months after PR. Results: Patients started PR a median of 19 weeks after the acute PE event. Their median age was 47.5 years, 33% were women and all presented with NYHA (New York Heart Association) class II and higher. After PR, patients showed significant and clinically relevant improvements in 6MWT (mean difference: 49.4 m [95% CI 32.0−66.8]). Similarly, patients increased performance in maximum strength, endurance and inspiratory muscle strength. At long-term follow-up, 78% of patients reported improved health. Conclusion: We observed significant improvements in exercise capacity in PE patients undergoing outpatient PR. The majority of patients also reported a long-term improvement in health status. Prospective studies are needed to identify patients who would benefit most from structured PR.

Background: Following years of pandemic severe acute respiratory syndrome coronavirus 2 infections labelled Covid-19, long lasting impairment summarized as post-Covid syndrome (PCS) challenges worldwide healthcare. Patients benefit from rehabilitation programs, but sex specific aspects of improvement remain little understood. The aim of the study was to assess whether women and men differ in response to outpatient pulmonary rehabilitation for PCS. Methods: 263 (54.4% female) patients partaking in outpatient pulmonary rehabilitation (OPR) due to PCS between March 2020 and July 2022 were included in a prospective observational cohort study. Outcomes were assessed at baseline and before discharge from OPR and included six-minute walking distance (6MWD), 1-second forced expiratory volume (FEV1), diffusion capacity for carbon monoxide, maximal inspiratory pressure (MIP), dyspnea (medical research council scale), and post-Covid functional status scale (PCFS). Sexspecific changes in outcomes following OPR were assessed by linear mixed model and presented as mean differences (MD) with 95% confidence intervals. Linear regression was applied to test whether 6MWD correlates with PCFS and the minimal clinically important difference (MCID) in 6MWD regarding an improvement of at least one point in PCFS was computed with logistic regression. Results: Significant improvement throughout OPR was observed for all outcomes (all p < 0.0001). Despite less severe Covid-19 infections, PCFS scores remained higher in females after OPR (p = 0.004) and only 19.4% of women compared to 38.5% of men achieved remission of functional impairment. At baseline as well as after OPR, females showed higher symptom load compared to men in dyspnea (p = 0.0027) and scored lower in FEV1 (p = 0.009) and MIP (p = 0.0006) assessment. Performance in 6MWD was comparable between men and women. An increase of 35 m in 6MWD was computed as minimal clinically important difference to improve functional impairment. Conclusion: Both subjective symptoms such as fatigue and dyspnea and objective impairment in performance in pulmonary function were more frequently observed among women. Despite improvement throughout OPR in both women and men, the sex-gap in symptom load could not be closed as women less often achieved remission from functional impairment due to PCS. Intensified treatment of these symptoms should be considered in women undergoing rehabilitation for PCS.

(1) Background: Millions of people worldwide were infected with COVID-19. After the acute phase of the disease, many suffer from prolonged symptoms, the post-COVID syndrome, especially the phenotype with lung residuals. Many open questions regarding lung ultrasound (LUS) have to be answered. One essential question is the means for optimal following-up of patients with post-COVID-19 residuals with LUS; (2) Methods: A retrospective data analysis of patients after acute COVID-19 infection diagnosed with post-COVID syndrome in the state hospital of Steyr and the rehabilitation center of Hochegg was performed. LUS examinations following a 12-zone scanning protocol were performed, and the LUS score quantified comet tail artifacts. A total of 16 patients were evaluated twice with LUS from May 2020 until June 2021. (3) Results: All patients’ reverberation artifacts were reduced over time. The initial LUS score of 17.75 (SD 4.84) points was decreased over the duration of the second rehabilitation to 8,2 (SD 5.94). The difference in the Wilcoxon test was significant (p < 0.001); (4) Conclusions: Lung ultrasound was a valuable tool in the follow-up of post-COVID-syndrome with lung residuals in the first wave of COVID-19. A reduction in reverberation artifacts was demonstrated. Further studies about the clinical significance have to follow.

Background: Post-exertional malaise (PEM) is the hallmark symptom of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) and frequently occurs in post-COVID syndrome (PCS). Reliable biomarkers for PEM are lacking. We investigated whether lactate kinetics and repeated handgrip strength measurements could serve as objective markers of PEM and distinguish patients with and without ME/CFS.Methods: In this single-centre prospective study, 103 patients with PCS were classified into three phenotypes: Non-PEM, PEM non-ME/CFS, and PEM+ME/CFS (according to the Canadian Consensus Criteria). Assessments included lactate at rest and after 5 minutes of cycling at 30% predicted Wmax, blood gas analysis, and repeated handgrip strength testing, including Fatigue Ratio and Recovery Ratio.Findings: Lactate concentrations after submaximal exercise were significantly higher only in the PEM+ME/CFS group (p<0.01). Blood gas analysis suggested metabolic acidosis and reduced oxygen extraction in patients with ME/CFS. Exploratory logistic regression showed an association between exertional lactate concentration and ME/CFS, but not PEM alone (p=0.008). Handgrip weakness did not differ between groups. Repeat Fatigue Ratio was increased in PEM non-ME/CFS, particularly in women (p=0.023), whereas Recovery Ratios were similarly reduced across groups.Interpretation: Lactate kinetics during submaximal exercise identify a distinct metabolic phenotype in PCS associated with ME/CFS rather than PEM alone. Combined with blood gas analysis, these findings may support objective phenotyping, whereas repeated handgrip testing provides complementary functional information. Larger prospective studies are needed to validate these findings.