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Goldsweig AM, Deng Y, Yao X, Desai NR, Cohen DJ, Aronow HD, Messé S, Ross JS, Lansky AJ, Savitz ST. Approval, Evidence, and "Off-Label" Device Utilization: The Patent Foramen Ovale Closure Story. Circ Cardiovasc Qual Outcomes 2024; 17:e010200. [PMID: 38189127 PMCID: PMC10844981 DOI: 10.1161/circoutcomes.123.010200] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 09/27/2023] [Indexed: 01/09/2024]
Abstract
BACKGROUND Following regulatory approval, medical devices may be used "off-label." Patent foramen ovale (PFO) closure is indicated to reduce recurrent stroke but has been proposed for other indications, including migraine, transient ischemic attack, and diving decompression illness. We sought to evaluate PFO closure rates and indications relative to the timing of regulatory approval and publication of key randomized trials. METHODS We performed a retrospective cohort study using the OptumLabs Data Warehouse of US commercial insurance enrollees from 2006 to 2019. We quantified PFO closure among individuals with ≥2 years of preprocedure coverage to establish indications, classified hierarchically as stroke/systemic embolism, migraine, transient ischemia attack, or other. RESULTS We identified 5315 patients undergoing PFO closure (51.8% female, 29.2%≥60 years old), which increased from 4.75 per 100 000 person-years in 2006 to 6.60 per 100 000 person-years in 2019. Patients aged ≥60 years accounted for 29.2% of closures. Procedure volumes corresponded weakly with supportive clinical publications and device approval. Among patients with PFO closure, 58.6% underwent closure for stroke/systemic embolism, 10.2% for transient ischemia attack, 8.8% for migraine, and 22.4% for other indications; 17.6% of patients had atrial fibrillation at baseline; and 11.9% developed atrial fibrillation postprocedure. Those aged ≥60 years and male were less likely to undergo closure for migraine than stroke/systemic embolism. CONCLUSIONS From 2006 to 2019, PFO closure use was consistently low and corresponded weakly with clinical trial publications and regulatory status. Nearly half of patients underwent PFO closure for indications unapproved by the Food and Drug Administration. Regulators and payers should coordinate mechanisms to promote utilization for approved indications to ensure patient safety and should facilitate clinical trials for other possible indications.
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Affiliation(s)
- Andrew M. Goldsweig
- Department of Cardiovascular Medicine, Baystate Medical
Center, Springfield, MA, USA
| | - Yihong Deng
- Kern Center for the Science of Health Care Delivery and
Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA
| | - Xiaoxi Yao
- Kern Center for the Science of Health Care Delivery and
Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA
| | - Nihar R. Desai
- Section of Cardiovascular Medicine, Yale University, New
Haven, CT, USA
| | - David J. Cohen
- Cardiovascular Research Foundation, New York, NY, USA, and
St. Francis Hospital and Heart Center, Roslyn, NY, USA
| | - Herbert D. Aronow
- Department of Cardiovascular Medicine, Henry Ford Health
System, Detroit, MI, USA
| | - Steven Messé
- Department of Neurology, Hospital of the University of
Pennsylvania, Philadelphia, PA, USA
| | - Joseph S. Ross
- Section of General Medicine, Department of Internal
Medicine, Yale School of Medicine, and Department of Health Policy and Management,
Yale School of Public Health, New Haven, CT, USA
| | | | - Samuel T. Savitz
- Kern Center for the Science of Health Care Delivery and
Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA
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Abstract
Pulmonary physiology is significantly altered during underwater exposure, as immersion of the body and increased ambient pressure elicit profound effects on both the cardiovascular and respiratory systems. Thoracic blood pooling, increased breathing gas pressures, and variations in gas volumes alongside ambient pressure changes put the heart and lungs under stress. Normal physiologic function and fitness of the cardiovascular and respiratory systems are prerequisites to safely cope with the challenges of the underwater environment when freediving, or diving with underwater breathing apparatus. Few physicians are trained to understand the physiology and medicine of diving and how to recognize or manage diving injuries. This article provides an overview of the physiologic challenges to the respiratory system during diving, with or without breathing apparatus, and outlines possible health risks and hazards unique to the underwater environment. The underlying pathologic mechanisms of dive-related injuries are reviewed, with an emphasis on pulmonary physiology and pathophysiology.
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Affiliation(s)
- Kay Tetzlaff
- Department of Sports Medicine, University Hospital of Tuebingen, Tuebingen, Germany
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3
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Tso JV, Powers JM, Kim JH. Response to: Correspondence on 'Cardiovascular considerations for scuba divers' by Wilmshurst et al. Heart 2022; 108:1416-1418. [PMID: 35853685 PMCID: PMC10511218 DOI: 10.1136/heartjnl-2022-321527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Jason V Tso
- Department of Cardiology, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Joshua M Powers
- Department of Cardiology, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Jonathan H Kim
- Department of Cardiology, Emory University School of Medicine, Atlanta, Georgia, USA
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Wilmshurst P, Turner M, Bryson P, Edge C, Clamp M, Glover M. Correspondence on 'Cardiovascular considerations for scuba divers' by Tso et al. BRITISH HEART JOURNAL 2022; 108:1415-1416. [PMID: 35853686 DOI: 10.1136/heartjnl-2022-321526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Peter Wilmshurst
- Cardiology Department, Royal Stoke University Hospital, Stoke on Trent, UK
| | - Mark Turner
- Bristol Heart Institute, University Hospitals Bristol, Bristol, UK
| | | | - Christopher Edge
- Anaethetic Department, Royal Berkshire NHS Foundation Trust, Reading, UK
| | - Margaret Clamp
- Occupational Health, MC Occupational Health, Nottingham, UK.,Medical Advisor, British Sub-Aqua Club and Sub-Aqua Association, Ellesmere Port, UK
| | - Mark Glover
- Hyperbaric Medicine Unit, St Richard's Hospital, Chichester, UK
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5
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Apostolos A, Drakopoulou M, Trantalis G, Synetos Α, Oikonomou G, Karapanayiotides T, Tsioufis C, Toutouzas K. The management of patent foramen ovale in divers: where do we stand? Ther Adv Neurol Disord 2022; 15:17562864221103459. [PMID: 35837370 PMCID: PMC9274415 DOI: 10.1177/17562864221103459] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 05/10/2022] [Indexed: 11/16/2022] Open
Abstract
Diving is a fascinating activity, but it does not come without any cost; decompression illness (DCI) is one of the most frequent diseases occurring in divers. Rapid surfacing after diving causes alveolar rupture and bubbles release, which enter in the systemic circulation and could embolize numerous organs and tissues. The presence of patent foramen ovale (PFO) contributes to the passage of venous gas bubbles into the arterial circulation, increasing the risk of complications related to DCI. The diagnosis is established with a detailed medical history, a comprehensive clinical evaluation, and a multimodal imaging approach. Although the percutaneous closure of PFO is ambiguous for divers, as a primary prevention strategy, transcatheter management is considered as beneficial for DCI recurrence prevention. The aim of this study is to introduce the basic principles of DCI, to review the pathophysiological connection between DCI and PFO, to highlight the risk factors and the optimal treatment, and, last but not least, to shed light on the role of closure as primary and secondary prevention.
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Affiliation(s)
- Anastasios Apostolos
- First Department of Cardiology, School of Medicine, National and Kapodistrian University of Athens, Hippokration General Hospital, Athens, Greece
| | - Maria Drakopoulou
- First Department of Cardiology, School of Medicine, National and Kapodistrian University of Athens, Hippokration General Hospital, Athens, Greece
| | - George Trantalis
- First Department of Cardiology, School of Medicine, National and Kapodistrian University of Athens, Hippokration General Hospital, Athens, Greece
| | - Αndreas Synetos
- First Department of Cardiology, School of Medicine, National and Kapodistrian University of Athens, Hippokration General Hospital, Athens, Greece
| | - George Oikonomou
- First Department of Cardiology, School of Medicine, National and Kapodistrian University of Athens, Hippokration General Hospital, Athens, Greece
| | - Theodoros Karapanayiotides
- Second Department of Neurology, School of Medicine, Aristotle University of Thessaloniki, AHEPA University Hospital, Thessaloniki, Greece
| | - Costas Tsioufis
- First Department of Cardiology, School of Medicine, National and Kapodistrian University of Athens, Hippokration General Hospital, Athens, Greece
| | - Konstantinos Toutouzas
- Professor of Cardiology, First Department of Cardiology, School of Medicine, National and Kapodistrian University of Athens, 114 Vasilissis Sophias Avenue, Athens 115 27, Greece
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6
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Cao Q, Shen Y, Hou Z, Li D, Tang B, Xu L, Li Y. The Relationship Between Patent Foramen Ovale and Unexplained Dizziness: A Prospective Analysis in China. Neuropsychiatr Dis Treat 2022; 18:1495-1505. [PMID: 35923299 PMCID: PMC9341455 DOI: 10.2147/ndt.s367140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 06/29/2022] [Indexed: 11/23/2022] Open
Abstract
INTRODUCTION Patent foramen ovale (PFO) is potentially associated with abnormal embolisms, and it results in mixing of arteriovenous blood when its right-to-left shunt (RLS) emerges. Present studies have found that PFO is a risk factor that can lead to many diseases. However, few studies have examined the relationship between PFO and dizziness. METHODS This study was a large single-center, prospective, controlled study. From March 2019 to March 2021, we recruited patients with dizziness were divided into two groups: "explained" and "unexplained". All patients were submitted to contrast-enhanced transcranial Doppler ultrasound and screened for PFO. Transesophageal heart ultrasound or right heart catheterization was used to confirm PFO. Additionally, multiple factors were collected and statistical analysis was performed between the two groups. RESULTS Among the 244 patients included, 123 were in the "explained" group and 121 were in the "unexplained" group. The prevalence of PFO in the "explained" group was 34 (27.4%) compared to 79 (64.7%) in the "unexplained" group. In the "explained" group, 7 were RLS level IV, 6 were level III, 7 were level II, and 14 were level I. For the "unexplained" group, the numbers of patients with levels IV, III, II and I were 27, 26, 12 and 14, respectively. Univariate analysis revealed that PFO (χ2= 34.77, P < 0.001) and age (t = -3.49, P < 0.001) seemed to be potential risk factor candidates for "unexplained" dizziness. In multiple regression analysis, age (OR = 0.97; 95% CI 0.95-0.99) and the prevalence of PFO (OR = 4.37; 95% CI 2.50-7.63) were statistically significant. Massively shunted PFO showed more pronounced risk factors (OR = 8.76; 95% CI 4.04-19.03). CONCLUSION There was a high prevalence of PFO and a greater RLS level in unexplained dizziness. PFO and age were independent risk factors for unexplained dizziness. When treating with unexplained dizziness, especially among young people, we must pay attention to the presence of PFO.
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Affiliation(s)
- Qian Cao
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Yu Shen
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China.,Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, People's Republic of China
| | - Zhuo Hou
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Defu Li
- Jiangxi Provincial Key Laboratory of Preventive Medicine, Nanchang University School of Public Health, Nanchang, Jiangxi, People's Republic of China
| | - Boji Tang
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Lijun Xu
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Yanping Li
- Department of Neuroelectrophysiology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
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7
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Germonpré P, Lafère P, Portier W, Germonpré FL, Marroni A, Balestra C. Increased Risk of Decompression Sickness When Diving With a Right-to-Left Shunt: Results of a Prospective Single-Blinded Observational Study (The "Carotid Doppler" Study). Front Physiol 2021; 12:763408. [PMID: 34777020 PMCID: PMC8586212 DOI: 10.3389/fphys.2021.763408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/07/2021] [Indexed: 11/21/2022] Open
Abstract
Introduction: Divers with a patent Foramen Ovale (PFO) have an increased risk for decompression sickness (DCS) when diving with compressed breathing gas. The relative risk increase, however, is difficult to establish as the PFO status of divers is usually only determined after a DCS occurrence. Methods: This prospective, single-blinded, observational study was designed to collect DCS data from volunteer divers after screening for right-to-left shunt (RLS) using a Carotid Doppler test. Divers were blinded to the result of the test, but all received a standardized briefing on current scientific knowledge of diving physiology and “low-bubble” diving techniques; they were then allowed to dive without restrictions. After a mean interval of 8 years, a questionnaire was sent collecting data on their dives and cases of DCS (if any occurred). Results: Data was collected on 148 divers totaling 66,859 dives. There was no significant difference in diving data between divers with or without RLS. Divers with RLS had a 3.02 times higher incidence of (confirmed) DCS than divers without RLS (p = 0.04). When all cases of (confirmed or possible DCS) were considered, the Relative Risk was 1.42 (p = 0.46). DCS occurred mainly in divers who did not dive according to “low-bubble” diving techniques, in both groups. Conclusion: This prospective study confirms that DCS is more frequent in divers with RLS (such as a PFO), with a Relative Risk of 1.42 (all DCS) to 3.02 (confirmed DCS). It appears this risk is linked to diving behavior, more specifically diving to the limits of the adopted decompression procedures.
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Affiliation(s)
- Peter Germonpré
- Centre for Hyperbaric Oxygen Therapy, Military Hospital, Brussels, Belgium.,Divers Alert Network (DAN) Europe Research Division, Roseto, Italy
| | - Pierre Lafère
- Centre for Hyperbaric Oxygen Therapy, Military Hospital, Brussels, Belgium.,Divers Alert Network (DAN) Europe Research Division, Roseto, Italy.,Environmental & Occupational, Ageing (Integrative) Physiology Lab, Haute Ecole Bruxelles-Brabant (HE2B), Auderghem, Belgium
| | - William Portier
- Centre for Hyperbaric Oxygen Therapy, Military Hospital, Brussels, Belgium
| | | | - Alessandro Marroni
- Environmental & Occupational, Ageing (Integrative) Physiology Lab, Haute Ecole Bruxelles-Brabant (HE2B), Auderghem, Belgium
| | - Costantino Balestra
- Divers Alert Network (DAN) Europe Research Division, Roseto, Italy.,Environmental & Occupational, Ageing (Integrative) Physiology Lab, Haute Ecole Bruxelles-Brabant (HE2B), Auderghem, Belgium.,Physical Activity Teaching Unit, Motor Sciences Department, Université Libre de Bruxelles (ULB), Brussels, Belgium
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8
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Tso JV, Powers JM, Kim JH. Cardiovascular considerations for scuba divers. Heart 2021; 108:1084-1089. [PMID: 34670825 DOI: 10.1136/heartjnl-2021-319601] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 09/29/2021] [Indexed: 12/13/2022] Open
Abstract
As the popularity of scuba diving increases internationally, physicians interacting with divers in the clinical setting must be familiar with the cardiovascular stresses and risks inherent to this activity. Scuba presents a formidable cardiovascular challenge by combining unique environmental conditions with the physiologic demands of underwater exercise. Haemodynamic stresses encountered at depth include increased hydrostatic pressure leading to central shifts in plasma volume coupled with cold water stimuli leading to simultaneous parasympathetic and sympathetic autonomic responses. Among older divers and those with underlying cardiovascular risk factors, these physiologic changes increase acute cardiac risks while diving. Additional scuba risks, as a consequence of physical gas laws, include arterial gas emboli and decompression sickness. These pathologies are particularly dangerous with altered sensorium in hostile dive conditions. When present, the appropriate management of patent foramen ovale (PFO) is uncertain, but closure of PFO may reduce the risk of paradoxical gas embolism in divers with a prior history of decompression sickness. Finally, similar to other Masters-level athletes, divers with underlying traditional cardiovascular risk should undergo complete cardiac risk stratification to determine 'fitness-to-dive'. The presence of undertreated coronary artery disease, occult cardiomyopathy, channelopathy and arrhythmias must all be investigated and appropriately treated in order to ensure diver safety. A patient-centred approach facilitating shared decision-making between divers and experienced practitioners should be utilised in the management of prospective scuba divers.
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Affiliation(s)
- Jason V Tso
- Department of Cardiology, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Joshua M Powers
- Department of Cardiology, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Jonathan H Kim
- Department of Cardiology, Emory University School of Medicine, Atlanta, Georgia, USA
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9
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Orsinelli DA, Rajpal S. Doing a Deep Dive on Patent Foramen Ovale: Stay Tuned in the PFO World. JACC Cardiovasc Imaging 2021; 15:190-192. [PMID: 34656484 DOI: 10.1016/j.jcmg.2021.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 08/24/2021] [Accepted: 09/09/2021] [Indexed: 11/24/2022]
Affiliation(s)
- David A Orsinelli
- Division of Cardiovascular Medicine, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA; Nationwide Children's Hospital, Columbus, Ohio, USA.
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10
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Screening and Risk Stratification Strategy Reduced Decompression Sickness Occurrence in Divers With Patent Foramen Ovale. JACC Cardiovasc Imaging 2021; 15:181-189. [PMID: 34419390 DOI: 10.1016/j.jcmg.2021.06.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 06/15/2021] [Accepted: 06/24/2021] [Indexed: 12/20/2022]
Abstract
OBJECTIVES This paper sought to evaluate the occurrence of decompression sickness (DCS) after the application of a patent foramen ovale (PFO) screening and risk stratification strategy. BACKGROUND PFO is associated with an increased risk of DCS. Recently, transcatheter closure was reported to reduce DCS occurrence in divers with a high-grade shunt. However, to date, there are no data regarding the effectiveness of any PFO screening and risk stratification strategy for divers. METHODS A total of 829 consecutive divers (35.4 ± 10.0 years, 81.5% men) were screened for PFO by means of transcranial color-coded sonography in the DIVE-PFO (Decompression Illness Prevention in Divers with a Patent Foramen Ovale) registry. Divers with a high-grade PFO were offered either catheter-based PFO closure (the closure group) or advised conservative diving (high grades). Divers with a low-grade shunt were advised conservative diving (low grades), whereas those with no PFO continued unrestricted diving (controls). A telephone follow-up was performed. To study the effect of the screening and risk stratification strategy, DCS occurrence before enrollment and during the follow-up was compared. RESULTS Follow-up was available for 748 (90%) divers. Seven hundred and 2 divers continued diving and were included in the analysis (mean follow-up 6.5 ± 3.5 years). The DCS incidence decreased significantly in all groups, except the controls. During follow-up, there were no DCS events in the closure group; DCS incidence was similar to the controls in the low-grade group (HR: 3.965; 95% CI: 0.558-28.18; P = 0.169) but remained higher in the high-grade group (HR: 26.170; 95% CI: 5.797-118.16; P < 0.0001). CONCLUSIONS The screening and risk stratification strategy using transcranial color-coded sonography was associated with a decrease in DCS occurrence in divers with PFO. Catheter-based PFO closure was associated with a DCS occurrence similar to the controls; the conservative strategy had a similar effect in the low-grade group, but in the high-grade group the DCS incidence remained higher than in all other groups.
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11
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Narita K, Amiya E. Social and environmental risks as contributors to the clinical course of heart failure. Heart Fail Rev 2021; 27:1001-1016. [PMID: 33945055 DOI: 10.1007/s10741-021-10116-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/22/2021] [Indexed: 11/28/2022]
Abstract
Heart failure is a major contributor to healthcare expenditures. Many clinical risk factors for the development and exacerbation of heart failure had been reported, including diabetes, renal dysfunction, and respiratory disease. In addition to these clinical parameters, the effects of social factors, such as occupation or lifestyle, and environmental factors may have a great impact on disease development and progression of heart failure. However, the current understanding of social and environmental factors as contributors to the clinical course of heart failure is insufficient. To present the knowledge of these factors to date, this comprehensive review of the literature sought to identify the major contributors to heart failure within this context. Social factors for the risk of heart failure included occupation and lifestyle, specifically in terms of the effects of specific occupations, occupational exposure to toxicities, work style, and sleep deprivation. Socioeconomic factors focused on income and education level, social status, the neighborhood environment, and marital status. Environmental factors included traffic and noise, air pollution, and other climate factors. In addition, psychological stress and behavior traits were investigated. The development of heart failure may be closely related to these factors; therefore, these data should be summarized for the context to improve their effects on patients with heart failure. The present study reviews the literature to summarize these influences.
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Affiliation(s)
- Koichi Narita
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, 113-8655, Tokyo, Japan
| | - Eisuke Amiya
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, 113-8655, Tokyo, Japan. .,Department of Therapeutic Strategy for Heart Failure, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, 113-8655, Tokyo, Japan.
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12
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Reeder GS, Taggart NW, Ammash NM. Management of the Patient With Patent Foramen Ovale in 2021: A Spectrum of Cases. Mayo Clin Proc 2021; 96:1356-1362. [PMID: 33958063 DOI: 10.1016/j.mayocp.2020.12.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 12/01/2020] [Accepted: 12/22/2020] [Indexed: 11/20/2022]
Abstract
Patients with patent foramen ovale can manifest in a variety of ways. These presentations and their resolution are discussed in this article.
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Affiliation(s)
- Guy S Reeder
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN.
| | | | - Naser M Ammash
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN; Sheikh Shakbout Medical City, Abu Dhabi, United Arab Emirates
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13
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Brampton W, Sayer MD. Decompression sickness after a highly conservative dive in a diver with known persistent foramen ovale: Case report. Diving Hyperb Med 2021; 51:111-115. [PMID: 33761552 DOI: 10.28920/dhm51.1.111-115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 10/29/2020] [Indexed: 11/05/2022]
Abstract
A diver returned to diving, 15 months after an episode of neuro-spinal decompression sickness (DCS) with relapse, after which she had been found to have a moderate to large provoked shunt across a persistent (patent) foramen ovale (PFO), which was not closed. She performed a single highly conservative dive in line with the recommendations contained in the 2015 position statement on PFO and diving published jointly by the South Pacific Underwater Medicine Society and the United Kingdom Sports Diving Medical Committee. An accidental Valsalva manoeuvre shortly after surfacing may have provoked initial symptoms which later progressed to DCS. Her symptoms and signs were milder but closely mirrored her previous episode of DCS and she required multiple hyperbaric oxygen treatments over several days, with residua on discharge. Although guidance in the joint statement was mostly followed, the outcome from this case indicates that there may be a subgroup of divers with an unclosed PFO, who have had a previous episode of serious DCS, who may not be safe to dive, even within conservative limits.
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Affiliation(s)
- William Brampton
- Hyperbaric Medicine Unit. Aberdeen Royal Infirmary, Aberdeen, Scotland.,Corresponding author: Dr William Brampton, Hyperbaric Medical Unit, Aberdeen Royal Infi rmary, Foresterhill, Aberdeen, AB25 2ZN, Scotland, UK,
| | - Martin Dj Sayer
- Tritonia Scientific Ltd., Oban, Scotland.,West Scotland Centre for Diving and Hyperbaric Medicine, Oban, Scotland
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14
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Edvinsson B, Thilén U, Nielsen NE, Christersson C, Dellborg M, Eriksson P, Hlebowicz J. Does persistent (patent) foramen ovale closure reduce the risk of recurrent decompression sickness in scuba divers? Diving Hyperb Med 2021; 51:63-67. [PMID: 33761542 DOI: 10.28920/dhm51.1.63-67] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 12/20/2020] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Interatrial communication is associated with an increased risk of decompression sickness (DCS) in scuba diving. It has been proposed that there would be a decreased risk of DCS after closure of the interatrial communication, i.e., persistent (patent) foramen ovale (PFO). However, the clinical evidence supporting this is limited. METHODS Medical records were reviewed to identify Swedish scuba divers with a history of DCS and catheter closure of an interatrial communication. Thereafter, phone interviews were conducted with questions regarding diving and DCS. All Swedish divers who had had catheter-based PFO-closure because of DCS were followed up, assessing post-closure diving habits and recurrent DCS. RESULTS Nine divers, all with a PFO, were included. Eight were diving post-closure. These divers had performed 6,835 dives (median 410, range 140-2,200) before closure, and 4,708 dives (median 413, range 11-2,000) after closure. Seven cases with mild and 10 with serious DCS symptoms were reported before the PFO closure. One diver with a small residual shunt suffered serious DCS post-closure; however, that dive was performed with a provocative diving profile. CONCLUSION Divers with PFO and DCS continue to dive after PFO closure and this seems to be fairly safe. Our study suggests a conservative diving profile when there is a residual shunt after PFO closure, to prevent recurrent DCS events.
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Affiliation(s)
- Björn Edvinsson
- Department of Cardiology, Department of Clinical Science, Skåne University Hospital, Lund University, Lund, Sweden
| | - Ulf Thilén
- Department of Cardiology, Department of Clinical Science, Skåne University Hospital, Lund University, Lund, Sweden
| | - Niels Erik Nielsen
- Department of Cardiology, Department of Clinical Science, University Hospital Linköping, Linköping University, Linköping, Sweden
| | | | - Mikael Dellborg
- Department of Cardiology, Department of Clinical Science, Sahlgrenska University Hospital, University of Gothenburg, Gothenburg, Sweden
| | - Peter Eriksson
- Department of Cardiology, Department of Clinical Science, Sahlgrenska University Hospital, University of Gothenburg, Gothenburg, Sweden
| | - Joanna Hlebowicz
- Department of Cardiology, Department of Clinical Science, Skåne University Hospital, Lund University, Lund, Sweden.,Corresponding author: Dr Joanna Hlebowicz, Department of Cardiology, Skåne University Hospital, Lund University, SE-221, 85 Lund, Sweden,
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