INTRODUCTION: Ventilatory efficiency (V'E/V'CO2 ) has been shown to predict postoperative pulmonary complications (PPCs) in lung resection candidates. V'E/V'CO2 is determined by arterial partial pressure of carbon dioxide (PaCO2 ) and by dead space to tidal volume ratio (VD/VT). We hypothesised PaCO2 and VD/VT contribute equally to the increase in V'E/V'CO2 in lung resection patients. METHODS: Consecutive lung resection candidates from two prior prospective studies were included in this post hoc analysis. All subjects underwent preoperative spirometry, cardiopulmonary exercise testing and arterial blood gas analysis at rest and peak exercise. PPCs were prospectively assessed during the first 30 postoperative days, or hospital stay. A t-test, Mann-Whitney U-test and two-tailed Fisher's exact test were used to compare patients with and without PPCs. p-values <0.05 were considered statistically significant. RESULTS: Of 398 patients, PPC developed in 64 (16%). Patients with PPCs more frequently underwent lobectomy by open thoracotomy, had longer hospital and ICU length of stay and higher 30- and 90-day mortality. Moreover, patients with PPCs exhibited a higher V'E/V'CO2 ratio both at rest and peak exercise. Both ratios were independently associated with PPCs. At rest, the contribution of PaCO2 and VD/VT to the increase in V'E/V'CO2 ratio in patients with PPCs was 45% and 55%, respectively. At peak exercise, the contribution of PaCO2 and VD/VT to the increase in V'E/V'CO2 ratio was 16% and 84%, respectively. CONCLUSIONS: VD/VT (V'/Q' mismatch and/or rapid shallow breathing pattern) is the dominant contributor to the increase in V'E/V'CO2 in lung resection candidates who develop PPCs.

• Publikační typ
• časopisecké články MeSH

BACKGROUND: Physical activity is pivotal in managing heart failure with reduced ejection fraction, and walking integrated into daily life is an especially suitable form of physical activity. This study aimed to determine whether a 6-month lifestyle walking intervention combining self-monitoring and regular telephone counseling improves functional capacity assessed by the 6-minute walk test (6MWT) in patients with stable heart failure with reduced ejection fraction compared with usual care. METHODS: The WATCHFUL trial (Pedometer-Based Walking Intervention in Patients With Chronic Heart Failure With Reduced Ejection Fraction) was a 6-month multicenter, parallel-group randomized controlled trial recruiting patients with heart failure with reduced ejection fraction from 6 cardiovascular centers in the Czech Republic. Eligible participants were ≥18 years of age, had left ventricular ejection fraction <40%, and had New York Heart Association class II or III symptoms on guidelines-recommended medication. Individuals exceeding 450 meters on the baseline 6MWT were excluded. Patients in the intervention group were equipped with a Garmin vívofit activity tracker and received monthly telephone counseling from research nurses who encouraged them to use behavior change techniques such as self-monitoring, goal-setting, and action planning to increase their daily step count. The patients in the control group continued usual care. The primary outcome was the between-group difference in the distance walked during the 6MWT at 6 months. Secondary outcomes included daily step count and minutes of moderate to vigorous physical activity as measured by the hip-worn Actigraph wGT3X-BT accelerometer, NT-proBNP (N-terminal pro-B-type natriuretic peptide) and high-sensitivity C-reactive protein biomarkers, ejection fraction, anthropometric measures, depression score, self-efficacy, quality of life, and survival risk score. The primary analysis was conducted by intention to treat. RESULTS: Of 218 screened patients, 202 were randomized (mean age, 65 years; 22.8% female; 90.6% New York Heart Association class II; median left ventricular ejection fraction, 32.5%; median 6MWT, 385 meters; average 5071 steps/day; average 10.9 minutes of moderate to vigorous physical activity per day). At 6 months, no between-group differences were detected in the 6MWT (mean 7.4 meters [95% CI, -8.0 to 22.7]; P=0.345, n=186). The intervention group increased their average daily step count by 1420 (95% CI, 749 to 2091) and daily minutes of moderate to vigorous physical activity by 8.2 (95% CI, 3.0 to 13.3) over the control group. No between-group differences were detected for any other secondary outcomes. CONCLUSIONS: Whereas the lifestyle intervention in patients with heart failure with reduced ejection fraction improved daily steps by about 25%, it failed to demonstrate a corresponding improvement in functional capacity. Further research is needed to understand the lack of association between increased physical activity and functional outcomes. REGISTRATION: URL: https://www.clinicaltrials.gov; Unique identifier: NCT03041610.

• MeSH
• chůze MeSH
• dysfunkce levé srdeční komory * MeSH
• funkce levé komory srdeční MeSH
• kvalita života MeSH
• lidé MeSH
• senioři MeSH
• srdeční selhání * terapie   farmakoterapie   MeSH
• tepový objem MeSH
• životní styl MeSH
• Check Tag
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• multicentrická studie MeSH
• práce podpořená grantem MeSH
• randomizované kontrolované studie MeSH

• Publikační typ
• abstrakt z konference MeSH

INTRODUCTION: In recent years, ventilatory efficiency (minute ventilation (V'E)/carbon dioxide production (V'CO2 ) slope) and partial pressure of end-tidal carbon dioxide (PETCO2 ) have emerged as independent predictors of postoperative pulmonary complications (PPC). Single parameters may give only partial information regarding periprocedural hazards. Accordingly, our aim was to create prediction models with improved ability to stratify PPC risk in patients scheduled for elective lung resection surgery. METHODS: This post hoc analysis was comprised of consecutive lung resection candidates from two prior prospective trials. All individuals completed pulmonary function tests and cardiopulmonary exercise testing (CPET). Logistic regression analyses were used for identification of risk factors for PPC that were entered into the final risk prediction models. Two risk models were developed; the first used rest PETCO2 (for patients with no available CPET data), the second used V'E/ V'CO2 slope (for patients with available CPET data). Receiver operating characteristic analysis with the De-Long test and area under the curve (AUC) were used for comparison of models. RESULTS: The dataset from 423 patients was randomly split into the derivation (n=310) and validation (n=113) cohorts. Two final models were developed, both including sex, thoracotomy, "atypical" resection and forced expiratory volume in 1 s/forced vital capacity ratio as risk factors. In addition, the first model also included rest PETCO2 , while the second model used V'E/V'CO2 slope from CPET. AUCs of risk scores were 0.795 (95% CI: 0.739-0.851) and 0.793 (95% CI: 0.737-0.849); both p<0.001. No differences in AUCs were found between the derivation and validation cohorts. CONCLUSIONS: We created two multicomponental models for PPC risk prediction, both having excellent predictive properties.

• Publikační typ
• časopisecké články MeSH

BACKGROUND: Physical activity is a crucial demand on cystic fibrosis treatment management. The highest value of oxygen uptake (VO2peak) is an appropriate tool to evaluate the physical activity in these patients. However, there are several other valuable CPET parameters describing exercise tolerance (Wpeak, VO2VT1, VO2VT2, VO2/HRpeak, etc.), and helping to better understand the effect of specific treatment (VE, VT, VD/VT etc.). Limited data showed ambiguous results of this improvement after CFTR modulator treatment. Elexacaftor/tezacaftor/ivacaftor medication improves pulmonary function and quality of life, whereas its effect on CPET has yet to be sufficiently demonstrated. METHODS: We performed a single group prospective observational study of 10 adolescent patients with cystic fibrosis who completed two CPET measurements between January 2019 and February 2023. During this period, elexacaftor/tezacaftor/ivacaftor treatment was initiated in all of them. The first CPET at the baseline was followed by controlled CPET at least one year after medication commencement. We focused on interpreting the data on their influence by the novel therapy. We hypothesized improvements in cardiorespiratory fitness following treatment. We applied the Wilcoxon signed-rank test. The data were adjusted for age at the time of CPET to eliminate bias of aging in adolescent patients. RESULTS: We observed significant improvement in peak workload, VO2 peak, VO2VT1, VO2VT2, VE/VCO2 slope, VE, VT, RQ, VO2/HR peak and RR peak. The mean change in VO2 peak was 5.7 mL/kg/min, or 15.9% of the reference value (SD ± 16.6; p= 0.014). VO2VT1 improved by 15% of the reference value (SD ± 0.1; p= 0.014), VO2VT2 improved by 0.5 (SD ± 0.4; p= 0.01). There were no differences in other parameters. CONCLUSION: Exercise tolerance improved after elexacaftor/tezacaftor/ivacaftor treatment initiation. We suggest that the CFTR modulator alone is not enough for recovering physical decondition, but should be supplemented with physical activity and respiratory physiotherapy. Further studies are needed to examine the effect of CFTR modulators and physical therapy on cardiopulmonary exercise tolerance.

• MeSH
• aminofenoly * terapeutické užití   MeSH
• benzodioxoly * terapeutické užití   MeSH
• chinolony * terapeutické užití   MeSH
• cystická fibróza * farmakoterapie   patofyziologie   MeSH
• dítě MeSH
• fixní kombinace léků * MeSH
• indoly * terapeutické užití   MeSH
• kardiorespirační zdatnost MeSH
• lidé MeSH
• mladiství MeSH
• pilotní projekty MeSH
• prospektivní studie MeSH
• pyrazoly * terapeutické užití   MeSH
• pyridiny * terapeutické užití   MeSH
• pyrrolidiny MeSH
• pyrroly terapeutické užití   MeSH
• spotřeba kyslíku MeSH
• tolerance zátěže účinky léků   MeSH
• zátěžový test MeSH
• Check Tag
• dítě MeSH
• lidé MeSH
• mladiství MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• pozorovací studie MeSH

INTRODUCTION: Cystic fibrosis transmembrane conductance regulator modulator therapy improves nutritional status and quality of life. Clinical trials have shown pancreatic insufficiency conversion, mostly in pediatric patients treated with ivacaftor. Studies with elexacaftor/tezacaftor/ivacaftor (ETI) in older patients have not suggested restoration of exocrine pancreas function, but quality data in adults are lacking. Our aim was to show the effect of ETI in adults with cystic fibrosis (CF) on nutritional status and digestive function. We hypothesized improvement of nutritional parameters and gastrointestinal symptoms, reduction of pancreatic enzyme replacement therapy, but uncertain improvement in exocrine pancreatic function. METHODS: We prospectively enrolled adults with CF treated with ETI from August 2021 to June 2022. We measured anthropometric parameters, laboratory nutritional markers, change of fecal elastase, pancreatic enzymes replacement therapy needs, and gastrointestinal symptoms. RESULTS: In the cohort of 29 patients (mean age 29.1 years), 82.8% suffered exocrine pancreatic insufficiency. After ETI, mean BMI increased by 1.20 kg/m2 (p < 0.001), mean body weight by 3.51 kg (p < 0.001), albumin by 2.81 g/L, and prealbumin by 0.06 (both p < 0.001). Only 1 patient, initially pancreatic insufficient (4.5%, p < 0.001), developed pancreatic sufficiency, indicated by increased fecal elastase from 45 μg/g to 442.1 μg/g. Mean change in lipase substitution decreased by 1,969 units/kg/day (p < 0.001) and stools frequency by 1.18 per day (p < 0.001). CONCLUSION: Our data suggest increased nutritional parameters, lower pancreatic substitution requirements, and improved defecation in adult CF patients on ETI. Improvement in exocrine pancreatic function might be mutation-specific and needs further study.

• MeSH
• aminofenoly terapeutické užití   MeSH
• benzodioxoly terapeutické užití   MeSH
• chinoliny MeSH
• chinolony terapeutické užití   MeSH
• cystická fibróza * farmakoterapie   komplikace   MeSH
• dospělí MeSH
• exokrinní pankreatická insuficience * farmakoterapie   etiologie   komplikace   MeSH
• fixní kombinace léků * MeSH
• gastrointestinální nemoci farmakoterapie   MeSH
• indoly * terapeutické užití   MeSH
• lidé MeSH
• mladý dospělý MeSH
• nutriční stav * MeSH
• pankreatická elastasa metabolismus   MeSH
• prospektivní studie MeSH
• pyrazoly terapeutické užití   MeSH
• pyridiny terapeutické užití   MeSH
• pyrrolidiny terapeutické užití   MeSH
• výsledek terapie MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• mladý dospělý MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH

• Publikační typ
• abstrakt z konference MeSH

Úvod: Dlouhodobé následky akutního covidu-19 jsou poněkud přehlíženou realitou post-pandemického období nejen v EU. Stále neexistuje celosvětově akceptovaná terminologie ani jednotná definice. Epidemiologická data jsou velmi různorodá. Nemáme dostupné diagnostické biomarkery a dosud neexistuje efektivní farmakoterapie. Hlavním cílem práce je detailněji popsat nemocné, u kterých se po propuštění z hospitalizace následně vyvinul post-covid a popsat jeho klinickou podobu. V rámci ČR jde o první takto rozsáhlý projekt. Materiál a metodika: Retrospektivní studie všech pacientů hospitalizovaných pro akutní covid-19 ve velké univerzitní nemocnici spádově pokrývající region milion osob. Do studie byli zařazeni dospělí pacienti s první hospitalizací pro covid-19 nezávisle na věku, pohlaví či komorbiditách. U všech hospitalizovaných byly retrospektivně zjištěny a poté manuálně z elektronické dokumentace validovány parametry týkající se symptomů, laboratorních testů, terapie a výsledků hospitalizace. Následně byla systematicky získána data o všech nemocných, kteří kdykoliv po opuštění nemocnice navštívili ambulantní centrum postcovidové péče. Forma postcovidového postižení byla následně u každého z nich popsána. Výsledky: V pandemickém období od 1. 3. 2020 do 30. 6. 2022 bylo hospitalizováno pro akutní covid-19 celkem 4 001 pacientů. Ve 3 880 případech (53 % mužů, 54 % nekuřáků, průměrného věku 64 let s BMI 28) šlo o první hospitalizaci v důsledku akutního covidu-19. V nemocnici zemřelo 579 (14,9 % poprvé přijatých) osob a 3 301 (85,1 %) nemocných bylo propuštěno domů či do zařízení zdravotně-sociální péče. U 267 z nich (8,1 % propuštěných) došlo po více jak 3 měsících k diagnóze postcovidového postižení. Rizikové faktory pro rozvoj post-covidu zahrnovaly mužské pohlaví, nekuřáky, vyšší BMI, průduškové astma, imunosupresivní status a těžší stav (JIP) při hospitalizaci. Post-covidové postižení trvalo minimálně 6 měsíců, u 10 pacientů >24 měsíců. Dominantní postižení post-covidem bylo respirační (u 55 % osob). Mimoplicní projevy udávalo 42 % a chronickou únavu 38 % pacientů s projevy post-covidu. Neurologické změny pozorovalo 22 % post-covid nemocných. Nadto 29 % nemocných mělo objektivně poškozené plíce i přesto, že byli asymptomatičtí. Pacienti hospitalizovaní pro akutní covid-19 v omikronové fázi pandemie měli nižší pravděpodobnost přítomnosti post-covidu a menší riziko mimoplicní symptomatologie, pokud se u nich post-covid objevil. Závěr: Post-covid postižení se vyvinulo u 8 % pacientů propuštěných z nemocnice po akutním covidu-19. Rizikem pro post-covid bylo mužské biologické pohlaví, nadváha, nekouření, astma, imunosuprese a závažnější průběh akutní fáze covidu-19. U menší části nemocných trvají obtíže i déle než 24 měsíců. Osoby s hospitalizací během omikronového období jsou postiženi post-covidem méně často.

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PURPOSE: The Phenotypes of COPD in Central and Eastern Europe (POPE) study assessed the prevalence and clinical characteristics of four clinical COPD phenotypes, but not mortality. This retrospective analysis of the POPE study (RETRO-POPE) investigated the relationship between all-cause mortality and patient characteristics using two grouping methods: clinical phenotyping (as in POPE) and Burgel clustering, to better identify high-risk patients. PATIENTS AND METHODS: The two largest POPE study patient cohorts (Czech Republic and Serbia) were categorized into one of four clinical phenotypes (acute exacerbators [with/without chronic bronchitis], non-exacerbators, asthma-COPD overlap), and one of five Burgel clusters based on comorbidities, lung function, age, body mass index (BMI) and dyspnea (very severe comorbid, very severe respiratory, moderate-to-severe respiratory, moderate-to-severe comorbid/obese, and mild respiratory). Patients were followed-up for approximately 7 years for survival status. RESULTS: Overall, 801 of 1,003 screened patients had sufficient data for analysis. Of these, 440 patients (54.9%) were alive and 361 (45.1%) had died at the end of follow-up. Analysis of survival by clinical phenotype showed no significant differences between the phenotypes (P=0.211). However, Burgel clustering demonstrated significant differences in survival between clusters (P<0.001), with patients in the "very severe comorbid" and "very severe respiratory" clusters most likely to die. Overall survival was not significantly different between Serbia and the Czech Republic after adjustment for age, BMI, comorbidities and forced expiratory volume in 1 second (hazard ratio [HR] 0.80, 95% confidence interval [CI] 0.65-0.99; P=0.036 [unadjusted]; HR 0.88, 95% CI 0.7-1.1; P=0.257 [adjusted]). The most common causes of death were respiratory-related (36.8%), followed by cardiovascular (25.2%) then neoplasm (15.2%). CONCLUSION: Patient clusters based on comorbidities, lung function, age, BMI and dyspnea were more likely to show differences in COPD mortality risk than phenotypes defined by exacerbation history and presence/absence of chronic bronchitis and/or asthmatic features.

• MeSH
• chronická bronchitida * MeSH
• chronická obstrukční plicní nemoc * epidemiologie   MeSH
• dyspnoe epidemiologie   MeSH
• fenotyp MeSH
• lidé MeSH
• progrese nemoci MeSH
• retrospektivní studie MeSH
• usilovný výdechový objem MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• multicentrická studie MeSH

BACKGROUND: Veno-arterial extracorporeal membrane oxygenation (VA-ECMO) is increasingly being used for circulatory support in patients with cardiogenic shock, although the evidence supporting its use in this context remains insufficient. The ECMO-CS trial (Extracorporeal Membrane Oxygenation in the Therapy of Cardiogenic Shock) aimed to compare immediate implementation of VA-ECMO versus an initially conservative therapy (allowing downstream use of VA-ECMO) in patients with rapidly deteriorating or severe cardiogenic shock. METHODS: This multicenter, randomized, investigator-initiated, academic clinical trial included patients with either rapidly deteriorating or severe cardiogenic shock. Patients were randomly assigned to immediate VA-ECMO or no immediate VA-ECMO. Other diagnostic and therapeutic procedures were performed as per current standards of care. In the early conservative group, VA-ECMO could be used downstream in case of worsening hemodynamic status. The primary end point was the composite of death from any cause, resuscitated circulatory arrest, and implementation of another mechanical circulatory support device at 30 days. RESULTS: A total of 122 patients were randomized; after excluding 5 patients because of the absence of informed consent, 117 subjects were included in the analysis, of whom 58 were randomized to immediate VA-ECMO and 59 to no immediate VA-ECMO. The composite primary end point occurred in 37 (63.8%) and 42 (71.2%) patients in the immediate VA-ECMO and the no early VA-ECMO groups, respectively (hazard ratio, 0.72 [95% CI, 0.46-1.12]; P=0.21). VA-ECMO was used in 23 (39%) of no early VA-ECMO patients. The 30-day incidence of resuscitated cardiac arrest (10.3.% versus 13.6%; risk difference, -3.2 [95% CI, -15.0 to 8.5]), all-cause mortality (50.0% versus 47.5%; risk difference, 2.5 [95% CI, -15.6 to 20.7]), serious adverse events (60.3% versus 61.0%; risk difference, -0.7 [95% CI, -18.4 to 17.0]), sepsis, pneumonia, stroke, leg ischemia, and bleeding was not statistically different between the immediate VA-ECMO and the no immediate VA-ECMO groups. CONCLUSIONS: Immediate implementation of VA-ECMO in patients with rapidly deteriorating or severe cardiogenic shock did not improve clinical outcomes compared with an early conservative strategy that permitted downstream use of VA-ECMO in case of worsening hemodynamic status. REGISTRATION: URL: https://www. CLINICALTRIALS: gov; Unique identifier: NCT02301819.

• MeSH
• hemodynamika MeSH
• kardiogenní šok diagnóza   terapie   MeSH
• lidé MeSH
• mimotělní membránová oxygenace * metody   MeSH
• mortalita v nemocnicích MeSH
• retrospektivní studie MeSH
• srdeční zástava * MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• multicentrická studie MeSH
• práce podpořená grantem MeSH
• randomizované kontrolované studie MeSH