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Cardiovascular and Diving-Related Complications
Research Guide
What is Cardiovascular and Diving-Related Complications?
Cardiovascular and Diving-Related Complications refer to medical conditions linking patent foramen ovale (PFO) with cerebrovascular events such as cryptogenic stroke and paradoxical embolism, along with decompression illness in divers, and the comparative roles of transcatheter closure versus medical therapy in management.
This field examines the association between patent foramen ovale and risks like cryptogenic stroke, paradoxical embolism, migraine, thrombus formation, neurological events, and decompression illness, with 49,446 papers published. Hagen et al. (1984) in "Incidence and Size of Patent Foramen Ovale During the First 10 Decades of Life: An Autopsy Study of 965 Normal Hearts" reported PFO prevalence through autopsy data across age groups. Growth rate over the past five years is not available.
Topic Hierarchy
Research Sub-Topics
Patent Foramen Ovale and Cryptogenic Stroke
This sub-topic investigates PFO prevalence in cryptogenic stroke patients via transesophageal echocardiography and paradoxical embolism mechanisms. Researchers analyze atrial septal aneurysm co-occurrence and risk stratification.
Transcatheter PFO Closure versus Medical Therapy
This sub-topic compares randomized trials of percutaneous closure devices against antiplatelet/anticoagulant therapy for recurrent stroke prevention. Researchers evaluate periprocedural complications and long-term outcomes.
Patent Foramen Ovale and Migraine with Aura
This sub-topic explores epidemiological associations and microembolic triggers linking PFO to migraine pathophysiology. Researchers study closure efficacy in refractory migraineurs via sham-controlled trials.
PFO in Decompression Illness and Diving
This sub-topic examines right-to-left shunting during decompression causing neurological DCS and AGE in divers. Researchers develop bubble-grade screening protocols and closure recommendations.
Paradoxical Embolism through Patent Foramen Ovale
This sub-topic studies venous thrombus transit via PFO causing systemic embolization beyond stroke. Researchers characterize multiorgan involvement and diagnostic criteria using contrast echocardiography.
Why It Matters
These complications affect stroke prevention and diver safety by identifying PFO as a pathway for paradoxical embolism leading to cryptogenic stroke. Hagen et al. (1984) in "Incidence and Size of Patent Foramen Ovale During the First 10 Decades of Life: An Autopsy Study of 965 Normal Hearts" (2464 citations) established PFO incidence in 965 normal hearts, informing risk assessment for closure procedures versus medical therapy. In diving contexts, PFO contributes to decompression illness through gas bubble shunting, guiding screening protocols. Related cardiovascular risks intersect with sleep-disordered breathing, where Yaggi et al. (2005) showed obstructive sleep apnea triples stroke or death risk independent of hypertension.
Reading Guide
Where to Start
"Incidence and Size of Patent Foramen Ovale During the First 10 Decades of Life: An Autopsy Study of 965 Normal Hearts" by Hagen et al. (1984), as it provides foundational autopsy data on PFO prevalence central to understanding diving and embolic complications.
Key Papers Explained
Hagen et al. (1984) in "Incidence and Size of Patent Foramen Ovale During the First 10 Decades of Life: An Autopsy Study of 965 Normal Hearts" establishes baseline PFO epidemiology, which Hoffman and Kaplan (2002) in "The incidence of congenital heart disease" contextualizes within broader congenital defects. Yaggi et al. (2005) in "Obstructive Sleep Apnea as a Risk Factor for Stroke and Death" extends cardiovascular-stroke links, paralleling PFO embolism risks. Peppard et al. (2000) in "Prospective Study of the Association between Sleep-Disordered Breathing and Hypertension" adds hypertension as a confounder in these pathways.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Current focus remains on PFO closure efficacy versus medical therapy for cryptogenic stroke prevention, with no recent preprints available. Intersections with sleep-disordered breathing, as in Young et al. (1993) and Peppard et al. (2000), suggest ongoing needs for integrated cardiovascular risk models. No news coverage in the last 12 months indicates steady rather than rapidly advancing frontiers.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | The Occurrence of Sleep-Disordered Breathing among Middle-Aged... | 1993 | New England Journal of... | 10.2K | ✓ |
| 2 | The incidence of congenital heart disease | 2002 | Journal of the America... | 6.0K | ✕ |
| 3 | Prospective Study of the Association between Sleep-Disordered ... | 2000 | New England Journal of... | 4.9K | ✓ |
| 4 | Epidemiology of Obstructive Sleep Apnea | 2002 | American Journal of Re... | 4.2K | ✕ |
| 5 | Obstructive Sleep Apnea as a Risk Factor for Stroke and Death | 2005 | New England Journal of... | 2.9K | ✓ |
| 6 | Guidelines for the Primary Prevention of Stroke | 2014 | Stroke | 2.6K | ✓ |
| 7 | Incidence and Size of Patent Foramen Ovale During the First 10... | 1984 | Mayo Clinic Proceedings | 2.5K | ✕ |
| 8 | Diagnosis and Management of Childhood Obstructive Sleep Apnea ... | 2012 | PEDIATRICS | 2.4K | ✕ |
| 9 | CPAP for Prevention of Cardiovascular Events in Obstructive Sl... | 2016 | New England Journal of... | 2.0K | ✕ |
| 10 | Longitudinal Study of Moderate Weight Change and Sleep-Disorde... | 2000 | JAMA | 1.9K | ✕ |
Frequently Asked Questions
What is the prevalence of patent foramen ovale across age groups?
Hagen et al. (1984) conducted an autopsy study of 965 normal hearts and found patent foramen ovale present throughout the first 10 decades of life. The incidence and size vary by age, with specific measurements detailed in the study. This data supports PFO as a common anatomical variant linked to embolic risks.
How does obstructive sleep apnea relate to cardiovascular complications?
Yaggi et al. (2005) in "Obstructive Sleep Apnea as a Risk Factor for Stroke and Death" demonstrated that obstructive sleep apnea syndrome significantly increases stroke or death risk independently of other factors like hypertension. The study quantified this elevated risk in a cohort analysis. Such associations highlight apnea's role in broader cardiovascular morbidity.
What is the connection between sleep-disordered breathing and hypertension?
Peppard et al. (2000) in "Prospective Study of the Association between Sleep-Disordered Breathing and Hypertension" identified a dose-response link between baseline sleep-disordered breathing and hypertension four years later, independent of confounders. This suggests sleep-disordered breathing acts as a risk factor for hypertension. Findings apply to middle-aged adults with high undiagnosed prevalence.
How common is congenital heart disease including defects like PFO?
Hoffman and Kaplan (2002) in "The incidence of congenital heart disease" provided epidemiological data on congenital heart disease incidence, encompassing defects such as patent foramen ovale and atrial septal defects. The study outlined prevalence rates across populations. This informs management of related cerebrovascular risks.
What management approaches exist for PFO-related diving complications?
Management involves assessing PFO for transcatheter closure or medical therapy to prevent decompression illness and paradoxical embolism. The cluster addresses thrombus formation and neurological events tied to PFO in divers. Effectiveness comparisons derive from studies on closure versus therapy outcomes.
Open Research Questions
- ? What is the precise incidence of probe-patent PFO in divers and its direct contribution to decompression illness?
- ? How do transcatheter PFO closure outcomes compare to medical therapy in preventing recurrent cryptogenic stroke?
- ? Which thrombus formation mechanisms through PFO most predict paradoxical embolism during diving?
- ? What role does migraine play as a risk modifier for PFO-attributable cerebrovascular events?
- ? How does PFO size, as measured in Hagen et al. (1984), correlate with embolism risk across decades?
Recent Trends
The field maintains 49,446 papers with no specified five-year growth rate.
No recent preprints from the last six months or news coverage in the past 12 months indicate stable research momentum.
Highly cited works like Hagen et al. with 2464 citations continue to anchor PFO incidence studies.
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