Pulmonary embolism and deep venous thrombosis after COVID-19: long-term risk in a population-based cohort study

Background

Venous thromboembolism (VTE) (pulmonary embolism (PE) or deep venous thrombosis (DVT)) is common during acute COVID-19. Long-term excess risk has not yet been established.

Objective

To study long-term VTE risk after COVID-19.

Methods

Swedish citizens aged 18-84 years, hospitalized and/or testing positive for COVID-19 between January 1, 2020, and September 11, 2021 (exposed), stratified by initial hospitalization, were compared to matched (1:5) non-exposed population-derived subjects without COVID-19. Outcomes were incident VTE, PE or DVT recorded within 60, 60-<180, and ≥180 days. Cox regression was used for evaluation and a model adjusted for age, sex, comorbidities and socioeconomic markers developed to control for confounders.

Results

Among exposed patients, 48,861 were hospitalized for COVID-19 (mean age 60.6 years) and 894,121 were without hospitalization (mean age 41.4 years). Among patients hospitalized for COVID-19, fully adjusted hazard ratios (HRs) during 60-<180 days were 6.05 (95% confidence interval (CI) 4.80─7.62) for PE and 3.97 (CI 2.96─5.33) for DVT, compared to non-exposed with corresponding estimates among COVID-19 without hospitalization 1.17 (CI 1.01─1.35) and 0.99 (CI 0.86─1.15), based on 475 and 2,311 VTE events, respectively. Long-term (≥180 days) HRs in patients hospitalized for COVID-19 were 2.01 (CI 1.51─2.68) for PE and 1.46 (CI 1.05─2.01) for DVT while non-hospitalized had similar risk to non-exposed, based on 467 and 2,030 VTE events, respectively.

Conclusions

Patients hospitalized for COVID-19 retained an elevated excess risk of VTE, mainly PE, after 180 days, while long-term risk of VTE in individuals with COVID-19 without hospitalization was similar to the non-exposed.

[Autonomy and Participation As Common Goals of Nursing, Therapy and Social Medicine: Proposal for an Organizational Configuration Model on the Basis of Service Blueprinting]

BACKGROUND

Every person who is in the need of long-term care (according to German Social Code SGB XI §14) fulfills the requirements of disability according to German Social Code SGB IX, § 2. The right of participation and autonomy must be specially protected and realized for persons with long-term care needs because these persons have a limited capacity to advance their interests. The rights of people in the need of long-term care or assistance are protected not only by the national constitution but also by the UN Disability Rights Convention. Participation is an important principle of these extra-statutory regulations and has an extraordinary significance and individual meaning for quality of life. For concretizing the aim of participation and for realizing participation in daily practice, the following question arises: How must organizations be configured to achieve individual aims of participation for persons with long-term care need, complex health care needs and with potential for rehabilitation across sectoral, disciplinary and professional borders? This analysis focuses on people older than 70 years with geriatric-relevant multimorbidity and with potential for rehabilitation.

AIM

The aim of this study was to create a configuration model for the organization of interdisciplinary cooperation in rehabilitation out of a case study and on the basis of the service blueprinting method [1]. In a next step this configuration model can be evaluated concerning its effectiveness for achieving individual participation goals and quality of life of persons with long-term care need and with potential for rehabilitation.

METHOD

For creating the configuration model, the service blueprinting method [1] on the basis of Dervin's sense making theory [11] was applied to a case vignette of geriatric rehabilitation against a background of organization theories and nursing science concepts. With the case study the configuration model can be applied exemplarily at the setting of restorative care, therapy and rehabilitation. With the service blueprinting method, the rehabilitation process is aligned onto the geriatric patient's individual health care needs, perceptions of participation and quality of life.

RESULTS

As a result of the sequencing and service blueprinting process we offer a dynamic model for the coordination of responsibility of interdisciplinary rehabilitation teams with a user-centered alignment. Its effectiveness (and side-effects) for interdisciplinary cooperation and for patient's individual goals of participation and quality of life must be evaluated in further studies. A mixed-method design should be used to evaluate objective outcome parameters such as dependency on nursing care, hospital admission rates and subjective outcome parameters such as patient's perception of participation, autonomy and quality of life.

IMPLICATIONS FOR HEALTHCARE PRACTICE

The configuration model can be used for evaluating already implemented geriatric rehabilitation processes and organizations. The configuration model can be used in health care research or organizational research. After more evidence for desirable effects, it can be implemented into the health care system. Side effects should be monitored.This paper was written in cooperation with the working group "Nursing", department "Practical Social Medicine and Rehabilitation" of the German Society of Social Medicine and Prevention (Deutsche Gesellschaft für Sozialmedizin und Prävention DGSMP e.V.).

Sozialmedizin und Schnittstellen in der sektoralen Versorgung

Neben der Betrachtung der Individualmedizin hat die Sozialmedizin die sozialen Bezüge von Gesundheit und Krankheit im Fokus. Sie reflektiert in diesem Zusammenhang die Strukturen des gesamten Gesundheitssystems, dessen Funktionen und Funktionsdefizite. Sie befasst sich mit den spezifischen Wechselwirkungen zwischen Medizin und Gesellschaft und hat eine Brückenfunktion zu den klassischen Sozialwissenschaften 1. Von besonderem Interesse sind dabei die Schnittstellen in der sektoralen Versorgung. Die Arbeitsgruppe „Pflege“ des Fachbereichs „Praktische Sozialmedizin und Rehabilitation“ der Deutschen Gesellschaft für Sozialmedizin und Prävention, DGSMP, betrachtet wesentliche Schnittstellen in unserem sektoralen Versorgungssystem aus sozialmedizinischer Sicht in ihrer derzeitigen Funktion und Perspektive, v. a in Anbetracht der demografischen Herausforderungen der Zukunft. Von besonderer Bedeutung ist hierbei die Schnittstelle zwischen medizinischer und pflegerischer Versorgung im akutstationären und häuslichen Bereich sowie im Bereich der geriatrischen Versorgung einschließlich präventiver Maßnahmen. Mit diesem Beitrag soll eine Diskussion angeregt werden.

Effects of aerobic conditioning on cardiovascular sympathetic response to and recovery from challenge

Exercise has widely documented cardioprotective effects, but the mechanisms behind these effects are still poorly understood. Here, we test the hypothesis that aerobic training lowers cardiovascular sympathetic responses to and speeds recovery from challenge. We conducted a randomized, controlled trial contrasting aerobic versus strength training on indices of cardiac (pre-ejection period, PEP) and vascular (low-frequency blood pressure variability, LF-BPV) sympathetic responses to and recovery from psychological and orthostatic challenge in 149 young, healthy, sedentary adults. Aerobic and strength training did not alter PEP or LF-BPV reactivity to or recovery from challenge. These findings, from a large randomized, controlled trial using an intent-to-treat design, show that moderate aerobic exercise training has no effect on PEP and LF-BPV reactivity to or recovery from psychological or orthostatic challenge. In healthy young adults, the cardioprotective effects of exercise training are unlikely to be mediated by changes in sympathetic activity.

Aerobic exercise and strength training effects on cardiovascular sympathetic function in healthy adults: a randomized controlled trial

OBJECTIVE

Exercise has widely documented cardioprotective effects, but the mechanisms underlying these effects are not entirely known. Previously, we demonstrated that aerobic but not strength training lowered resting heart rate and increased cardiac vagal regulation, changes that were reversed by sedentary deconditioning. Here, we focus on the sympathetic nervous system and test whether aerobic training lowers levels of cardiovascular sympathetic activity in rest and that deconditioning would reverse this effect.

METHODS

We conducted a randomized controlled trial contrasting the effects of aerobic (A) versus strength (S) training on indices of cardiac (preejection period, or PEP) and vascular (low-frequency blood pressure variability, or LF BPV) sympathetic regulation in 149 young, healthy, and sedentary adults. Participants were studied before and after conditioning, as well as after 4 weeks of sedentary deconditioning.

RESULTS

As previously reported, aerobic capacity increased in response to conditioning and decreased after deconditioning in the aerobic, but not the strength, training group. Contrary to prediction, there was no differential effect of training on either PEP (A: mean [SD] -0.83 [7.8] milliseconds versus S: 1.47 [6.69] milliseconds) or LF BPV (A: mean [SD] -0.09 [0.93] ln mm Hg(2) versus S: 0.06 [0.79] ln mm Hg(2)) (both p values > .05).

CONCLUSIONS

These findings, from a large randomized controlled trial using an intent-to-treat design, show that moderate aerobic exercise training has no effect on resting state cardiovascular indices of PEP and LF BPV. These results indicate that in healthy, young adults, the cardioprotective effects of exercise training are unlikely to be mediated by changes in resting sympathetic activity.

TRIAL REGISTRATION

Clinicaltrials.gov identifier: NCT00358137.

Successful emergent lung transplantation after remote ex vivo perfusion optimization and transportation of donor lungs

A recent clinical trial provided evidence that ex vivo lung perfusion (EVLP) results in optimized human donor lungs for transplantation. Excellent recipient outcomes were documented after 4 h of normothermic perfusion. We report a clinical case utilizing remote EVLP to assess and improve function of initially otherwise unacceptable injured donor lungs followed by transportation and subsequent bilateral lung transplantation in a patient with virally induced refractory respiratory failure supported with extracorporeal membrane oxygenation. This is the first lung transplantation with the application of remote EVLP, wherein the donor lungs were transported from the donor hospital to a center for EVLP and then transported to another hospital for transplantation. It is also the first case of lung transplantation in the United States utilizing EVLP for functional optimization leading to successful transplantation. Organ procurement data, EVLP assessment, and the pre- and postoperative course of the recipient are presented. The available evidence supporting EVLP, the humanitarian and cooperative utilization of lungs otherwise discarded, are discussed.

A review of the potential applications and controversies of non-invasive testing for biomarkers of aspiration in the lung transplant population

Despite improvements in one-yr survival following lung transplantation, five-yr survival lags significantly behind the transplantation of other solid organs. The contrast in survival persists despite advancements in anti-rejection regimens, suggesting a non-alloimmune mechanism to chronic lung transplant failure. Notably, markers of aspiration have been demonstrated in bronchoalveolar lavage (BAL) fluid concurrent with bronchiolitis obliterans syndrome (BOS). This recent evidence has underscored gastroesophageal reflux (GER) and its associated aspiration risk as a non-alloimmune mechanism of chronic lung transplant failure. Given the suggested safety and efficacy of laparoscopic anti-reflux procedures in the lung transplant population, identifying those at risk for aspiration is of prime importance, especially concerning the potential for long-term improvements in morbidity and mortality. Conventional diagnostic methods for GER and aspiration, such as pH monitoring and detecting pepsin and bile salts in BAL fluid, have gaps in their effectiveness. Therefore, we review the applications and controversies of a non-invasive method of defining reflux injury in the lung transplant population: the detection of biomarkers of aspiration in the exhaled breath condensate. Only by means of assay standardization and directed collaboration may such a non-invasive method be a realization in lung transplantation.

Analysis of novel soluble chromate and uranyl reductases and generation of an improved enzyme by directed evolution

Most polluted sites contain mixed waste. This is especially true of the U.S. Department of Energy (DOE) waste sites which hold a complex mixture of heavy metals, radionuclides, and organic solvents. In such environments enzymes that can remediate multiple pollutants are advantageous. We report here evolution of an enzyme, ChrR6 (formerly referred to as Y6), which shows a markedly enhanced capacity for remediating two of the most serious and prevalent DOE contaminants, chromate and uranyl. ChrR6 is a soluble enzyme and reduces chromate and uranyl intracellularly. Thus, the reduced product is at least partially sequestered and nucleated, minimizing the chances of reoxidation. Only one amino acid change, (Tyr)128(Asn), was responsible for the observed improvement. We show here that ChrR6 makes Pseudomonas putida and Escherichia coli more efficient agents for bioremediation if the cellular permeability barrier to the metals is decreased.

Qualitätskriterien für ambulante Schulungsprogramme für übergewichtige und adipöse Kinder und Jugendliche

BACKGROUND

In Germany, 9 to 12 % of all children between five and seven years of age have been shown to be overweight at school entry; 2.5 to 3.5 % of them are obese. Therapeutic intervention for obese children and adolescents is considered to be indicated especially in cases where an increased body mass index (BMI) is accompanied by a disease the effective treatment of which requires weight loss. Furthermore, the child and its family must be willing to actively change their habits.

OBJECTIVE

A multitude of health care providers have begun to offer multidisciplinary group programme for prevention and treatment of obesity to affected individuals and their families. The Medical Service of the Statutory Health Insurance (MDK) has therefore developed a list of quality and assessment criteria for such programme.

METHODS

A systematic search for information in international and national publications was performed using standard methodology of evidence-based medicine. Data were extracted and assessed according to pre-defined criteria taking into consideration previously published clinical guidelines and opinions of expert panels.

RESULTS

Nearly all available studies were of low internal validity and mostly of poor methodological quality. Therefore, no binding recommendations for the design of health education programme for overweight and obese children and adolescents can be given. Potentially successful intervention should combine the following 4 modules: nutrition, physical activity, change of eating habits, physical activity habits and life style using methods of behavioural therapy, and involvement of parents. Such combinations may have the potential to reduce or stabilise the BMI at least during a defined period of time. In younger children, the beneficial effect will be more pronounced if the parents are actively involved.

CONCLUSION

Up to now informative studies have not reliably shown that the effect of ambulatory health education programmes for overweight and obese children and adolescents and their parents may last for more than one or two years. Therefore, a controlled clinical trial determining the long-term effectiveness of such programme is imperative. The decision whether a defined programmes should be included in such a study could be taken on the basis of the quality indicators and assessment criteria described here.

Cord blood and postnatal serum leptin and its relationship to steroid use and growth in sick preterm infants

OBJECTIVE

To study the effect of prenatal and postnatal glucocorticoids use on serum leptin and weight gain in sick preterm infants and its correlation with caloric intake.

METHODS

Serum leptin was measured in 24 neonates at day 1 (cord), 14 and 28 by radioimmunoassay. Total caloric intake (enteral and parenteral) and weight were measured on days 14 and 28 of life.

RESULTS

Mean birth weight and gestational age of study infants were 864 +/- 273 g (mean +/- SD) (range 520-1755 g), and 26.6 +/- 2.4 weeks (23-32 weeks) respectively. Cord blood leptin was greater in infants whose mothers received antenatal steroids (1.98 +/- 1.05 ng/ml vs 0.94 +/- 0.39 ng/ml, p=0.004). Serum leptin increased postnatally from 1.52 +/- 1.0 ng/ml at birth to 2.2 +/- 1.3 ng/ml on day 28 of life (p=0.03). Mean serum leptin had an inverse exponential relationship with postnatal weight gain by day 28 of life (R2=0.56). Total caloric intake on days 14 and 28 of life did not correlate with postnatal weight gain.

CONCLUSIONS

Increased serum concentration of leptin following glucocorticoids may be associated with poor weight gain in sick preterm infants.

Refractory post-transplant airway strictures: successful management with wire stents

OBJECTIVE

Bronchial stenosis, malacia and dehiscence are major airway complications of lung transplantation. Our success in managing this problem evolved from the use of semi-rigid dilators, to balloon dilation and placement of a stent, which were initially silicone, thereafter wire balloon-expandable and finally wire self-expandable.

METHODS

From May, 1994 until July 1997, we performed a total of 49 single and 58 bilateral lung transplants. Symptoms of shortness of breath, verified by a drop in the forced expiratory volume in one second (FEV1), led to bronchoscopic inspection of the airway in lung transplant patients. Eighteen patients (16%) suffered a severe form of airway complication (dehiscence or stenosis) in 24 of 151 airways at risk (15.9%). These anastomotic strictures were recalcitrant to conventional therapy. Intervention consisted of rigid bronchoscopy, dilation of the stricture and placement of a stent. Flexible bronchoscopy and fluoroscopy were used for precise placement of the stent. As the initial stent, the Hood silicone stent was placed five times in four patients and the Dumont studded stent five times in four patients. The Palmaz wire stent was used as the initial stent 10 times in seven patients and the Wallstent used eight times in seven patients. Four patients had multiple stents. Balloon inflation moulded the wire stent to the airway.

RESULTS

There was no mortality resulting from the airway complication or any intervention. The most serious complication was a perforation of the airway using the semi-rigid dilator that necessitated immediate thoracotomy and re-anastomosis of the bronchus. Other complications necessitated repeat interventions due to restenosis or failure of the stents. The success of the stent placement was measured subjectively by the immediate ease of breathing enjoyed by each patient and objectively by the significant increase of the FEV1 from a pre-operative mean of 1.19 l (SD 0.64 l) to a post-operative mean of 2.06 l (SD 0.70 l) (P < 0001). The mean number of interventions according to the type of wire stent first used was significantly fewer with Wallstent insertion (1.28 (SD 0.48)) than in those patients in whom a Palmaz stent was inserted (5.22 (SD 2.38)) (P < 0008).

CONCLUSION

The airway complication of stricture, broncho-malacia or dehiscence following lung transplantation can be managed effectively and easily with the use of balloon catheter dilation followed by precise placement of a self-expandable wire stent. The Wallstent is the superior stent for this application.

Accuracy of primary bedside neonatal nurse-generated score for neonatal acute physiology (SNAP) scores

OBJECTIVE

To determine whether 24-hour SNAP scores generated from data gathered by primary bedside nurses agreed with the SNAP scores of one trained research nurse.

STUDY DESIGN

Primary bedside nurses (n = 50) in a level III private nursery collected data necessary for generating 24-hour SNAP scores on 60 consecutively admitted inborn neonates who lived at least 24 hours. The amount of time required for data collection and scoring was also determined. SNAP scores and the time required to generate them were compared with the unit research nurse's SNAP scores and time required to generate them on the same 60 patients. The Wilcoxon rank test and Spearman's rank correlation were used for statistical analyses.

RESULTS

SNAP scores generated from primary bedside nursing data did not differ from those of the research nurse's SNAP scores (11.7 +/- 0.8 vs 11.4 +/- 0.9 [mean +/- SEM], p = 0.7), and they correlated well over a wide range of SNAP scores (r = 0.93, p = 0.0001). Primary bedside nurses required more time (15 +/- 0.7 vs 3.0 +/- 0.08 minutes, p = 0.0001) to generate SNAP scores than the research nurse.

CONCLUSION

Primary bedside level III nurses can accurately obtain data for SNAP scores during 8- to 12-hour shifts.

Clinical utility of a glucose reflectance meter for screening neonates for hypoglycemia

OBJECTIVE

The purpose of this study was to examine the clinical utility of a glucose reflectance meter to screen neonates for hypoglycemia.

STUDY DESIGN

One hundred six infants admitted to the observation or level III nursery with a screening whole blood glucose concentration < or = 2.8 mmol/L (< or = 50 mg/dl) had a second sample drawn to compare glucose reflectance meter measurements with those of corrected laboratory-determined glucose concentrations. Error grid analysis was used to determine clinical utility of the reflectance meter in a clinical setting.

RESULTS

No reading obtained with the glucose reflectance meter was > 2.2 mmol/L (40 mg/dl) in infants whose true whole blood glucose concentration was < or = 1.7 mmol/L (30 mg/dl). Only 0.9% (1/106) of glucose reflectance meter values were < or = 1.7 (< or = 30 mg/dl) when the simultaneous laboratory-determined whole-blood glucose concentration was > 2.2 mmol/L (40 mg/dl). Glucose concentrations obtained by the reflectance meter correlated (r = 0.77, p = 0.001) with laboratory-determined concentrations.

CONCLUSION

The glucose reflectance meter provides a rapid and clinically useful method of screening for neonatal hypoglycemia.

Treatment of infants with indirect hyperbilirubinemia. Readmission to birth hospital vs nonbirth hospital

BACKGROUND/OBJECTIVE

Indirect hyperbilirubinemia is a common cause for readmission to a hospital during the first week of life. Many newborn nurseries are ill equipped to readmit such newborns. The purpose of this study was to compare the care and treatment of infants with indirect hyperbilirubinemia who were readmitted to their birth hospital with those who were admitted to a hospital that differed from their birth hospital.

DESIGN

Retrospective cohort study.

SETTING

Children's and community hospitals.

PATIENTS

We reviewed the records of 100 newborns who were readmitted during the first week of life (36 were readmitted to their birth hospital) with a primary admission diagnosis of indirect hyperbilirubinemia.

RESULTS

Infants who were admitted to their birth hospital were less likely to have blood cultures (none of 36 vs 17 of 64, P = .0005), urine cultures (none of 36 vs eight of 64, P = .02), or more than one complete blood cell count (two of 36 vs 18 of 64, P = .001) performed compared with infants who were admitted to a nonbirth hospital. Antibiotic, intravenous therapy (P = .0005), and emergency department (P = .0001) use was more common among infants who were admitted to a nonbirth hospital. Infants who were admitted through the emergency department at a nonbirth hospital had phototherapy started later (mean +/- SD, 5.3 +/- 1.6 vs 2.2 +/- 1.7 hours; P = .0001) than did infants who were directly readmitted to the same nonbirth hospital.

CONCLUSIONS

Readmitting infants with indirect hyperbilirubinemia to birth hospitals or ensuring that accurate, timely, and complete information is obtained from the birth centers by admitting hospital personnel before laboratory studies and treatment are performed will reduce diagnostic workups and should reduce hospital charges for these infants. Phototherapy should be initiated in the emergency department if stabilization is required before admission.

[Expert assessment and counseling--a contradiction?]

This article concerns the rules and regulations governing the Federal German compulsory (statutory) health insurance which, among other ordinances, define the tasks of a so-called "Medical Service of the Statutory Health Insurance". The definitions given under the heading "Expertizing and Consultation" create a field of tension between the activities of advising the insured patient on the one hand and giving an expert opinion to the insurance body on the other, both functions being exercised by one and the same doctor. Four examples from daily practice are given to illustrate this, each example covering a different kind of medical activity. Against the background of his job to prepare an expertise for the insurance body the doctor confronts the insured patient: in the first example, he has to examine whether the kind of medical care for which the insurance body must pay is feasible from the cost viewpoint (or to suggest an alternative, cheaper method); in the second example, he removes well-founded doubts regarding the patient's inability to work, at the request of the employer; in the third case, he examines a prescribed or desired medical treatment or cure, and in the fourth case he examines the need for an adjuvant or remedial measure before this is sanctioned by the insurance body. These case reports show that there is no contradiction between consulting and expertizing: the results of expertizing can be conveyed to the patient in a comprehensible manner only by advising the patient accordingly. The expertizing doctor is no longer anonymous when he gives advice to the patient, and this is a challenge--in respect of competence, human understanding, and ability to face and resolve conflicts.

[Physical exercise tolerance in chronic obstructive emphysematous bronchitis and coronary heart disease under antiobstructive therapy]

19 consecutive patients (18 men, one woman, mean age 61.4 [49-73]years) with chronic obstructive airways disease (bronchitis and emphysema) together with angiographically confirmed coronary heart disease were studied to investigate their cardiopulmonary exercise tolerance and the effects of bronchodilators on their myocardial ischaemia. Because they were receiving drug therapy for angina or because they had previously undergone aortocoronary bypass operation or balloon dilatation, the patients were symptom-free. In three cases slight ischaemia was demonstrable during maximal exertion. Aerobic and anaerobic exercise capacity was determined by spiroergometry after inhalation of salbutamol (S, 0.2 mg) alone or in combination with oxitropium bromide (O, 0.2 mg). The supplementary effect of oral theophylline (T, 15 mg/kg.day) was studied in 13 patients. In terms of maximal aerobic exercise tolerance the following improvements were noted: energy output (watts): S: + 6.3%; S and O: + 12.3% (P < 0.05); S, O and T: + 14.0% (P < 0.01). Oxygen uptake (ml/min): S: + 8.2% (P < 0.05); S and O: + 18.2% (P < 0.01); S, O and T: + 35.4% (P < 0.01). Maximum exercise capacity was not significantly improved, although maximum oxygen uptake was significantly increased by the two-drug combination by 16.9% (P < 0.05) and by the three-drug combination by 19.2% (P < 0.05). Maximum minute volume and tidal volume rose significantly, though respiratory rate was unchanged. Heart rate and blood pressure remained practically unaffected by the treatment, both at rest and during exertion. There was no evidence of significant aggravation of ventricular arrhythmias or of ischaemia during ergometric testing.