Characterization of thrombus stiffening in radio frequency (rf) Mechanical thrombectomy.

Abstract

Intra-arterial mechanical thrombectomy (IAMT) for ischemic stroke has high recanalization rate, long treatment time window and low risk of symptomatic intracerebral haemorrhage (sICH), but thrombus fragments produced during treatment can lead to distal embolization. Fragmentation can be reduced if the thrombus is strengthened by increasing the thrombus's crosslink density. Radio frequency (rf) electric current commonly used in surgery to cut and coagulate tissue can induce crosslinking in thrombus. The increase in thrombus stiffness as a result of the increase in crosslinking from rf treatment is characterized in this study. Test results showed that the stiffness of thrombus is increased by more than 8 times after rf treatment. The dramatic increase in stiffness suggests that thrombus fragmentation and distal embolization can be reduced by applying rf during thrombectomy treatment.

AI evidence extraction

Main findings

Radio frequency (rf) electric current treatment increased thrombus stiffness by more than 8 times, consistent with increased crosslinking. The authors suggest this stiffening could reduce thrombus fragmentation and distal embolization during mechanical thrombectomy.

Outcomes measured

• thrombus stiffness
• thrombus crosslink density/crosslinking
• thrombus fragmentation (implied)
• distal embolization (implied)

Limitations

• No frequency, SAR, or exposure parameters reported in the abstract.
• Sample size and experimental details (e.g., in vitro vs. ex vivo vs. in vivo) are not stated.
• Clinical outcomes (fragmentation/embolization reduction) are suggested but not directly measured in the reported results.

Suggested hubs

• medical-rf-ablation-electrosurgery (0.78)
  Uses radio frequency electric current in a surgical/medical context to modify tissue (thrombus) properties.

{
    "study_type": "engineering",
    "exposure": {
        "band": "RF",
        "source": "medical/surgical radio frequency electric current",
        "frequency_mhz": null,
        "sar_wkg": null,
        "duration": null
    },
    "population": null,
    "sample_size": null,
    "outcomes": [
        "thrombus stiffness",
        "thrombus crosslink density/crosslinking",
        "thrombus fragmentation (implied)",
        "distal embolization (implied)"
    ],
    "main_findings": "Radio frequency (rf) electric current treatment increased thrombus stiffness by more than 8 times, consistent with increased crosslinking. The authors suggest this stiffening could reduce thrombus fragmentation and distal embolization during mechanical thrombectomy.",
    "effect_direction": "benefit",
    "limitations": [
        "No frequency, SAR, or exposure parameters reported in the abstract.",
        "Sample size and experimental details (e.g., in vitro vs. ex vivo vs. in vivo) are not stated.",
        "Clinical outcomes (fragmentation/embolization reduction) are suggested but not directly measured in the reported results."
    ],
    "evidence_strength": "low",
    "confidence": 0.66000000000000003108624468950438313186168670654296875,
    "peer_reviewed_likely": "yes",
    "keywords": [
        "radio frequency",
        "rf electric current",
        "mechanical thrombectomy",
        "ischemic stroke",
        "thrombus stiffening",
        "crosslinking",
        "distal embolization",
        "fragmentation"
    ],
    "suggested_hubs": [
        {
            "slug": "medical-rf-ablation-electrosurgery",
            "weight": 0.7800000000000000266453525910037569701671600341796875,
            "reason": "Uses radio frequency electric current in a surgical/medical context to modify tissue (thrombus) properties."
        }
    ]
}

Comments

Log in to comment.

No comments yet.