Percutaneous Valvuloplasty
Percutaneous Valvuloplasty - Related Videos
08:20
Percutaneous Cricothyrotomy
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2023
Source: James W Bonz, MD, Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA A surgical airway procedure is indicated when other forms of endotracheal intubation have failed and ventilation is worsening or not possible. This is the feared "can't intubate, can't ventilate" scenario, and in the emergency setting, cricothyrotomy is the surgical procedure of choice. Cricothyrotomy is preferred over tracheotomy because of the lower risk of complications, the predictable anatomy...
07:53
Assessment of Neuromuscular Function Using Percutaneous Electrical Nerve Stimulation
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Cited by 30 •
2015
We present a protocol to assess changes in neuromuscular function. Percutaneous electrical nerve stimulation is a non-invasive method that evokes muscular responses. Electrophysiological and mechanical properties of these responses permit the evaluation of neuromuscular function from brain to muscle (supra-spinal, spinal and peripheral levels).
09:31
In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses
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Cited by 10 •
2015
Optical coherence tomography (OCT) is a high resolution imaging technique that allows analysis of tissue specific optical properties providing the means for tissue differentiation. We developed needle based OCT, providing real-time imaging combined with on-the-spot tumor differentiation. This publication describes a method for percutaneous, needle based OCT of renal masses.
09:02
Percutaneous Hepatic Perfusion (PHP) with Melphalan as a Treatment for Unresectable Metastases Confined to the Liver
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Cited by 12 •
2016
In this manuscript, we describe percutaneous isolated hepatic perfusion with simultaneous chemofiltration as treatment for unresectable liver metastases. This procedure is performed under general anaesthesia in the angiosuite by an experienced team, consisting of an interventional radiologist, a clinical perfusionist and anaesthesiologist.
11:27
Preparation and Respirometric Assessment of Mitochondria Isolated from Skeletal Muscle Tissue Obtained by Percutaneous Needle Biopsy
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Cited by 24 •
2015
Methods for biopsy of Vastus lateralis, preparation of purified mitochondria, and respirometric profiling are described. The use of small muscle volume makes this technique suitable for clinical research applications.
FAQs
Balloon inflation acts directly on the stenotic valve by separating fused leaflets. This increases the size of the valve opening, allowing blood to pass through with less obstruction. The key mechanical goal is restoration of leaflet separation and a wider pathway, rather than removal of the valve itself.
By enlarging the narrowed opening, the intervention can improve blood flow through the affected valve and reduce pressure overload on the heart. This hemodynamic effect explains why symptoms may improve after treatment. Its purpose is not simply catheter placement, but changing the valve passage enough to ease the burden created by stenosis.
The main durability concerns are restenosis and valve regurgitation. Restenosis means the treated opening becomes narrowed again, while regurgitation refers to backward leakage through the valve. These possibilities matter because an initially improved opening may not provide a permanent result, and clinicians must consider both obstruction and leakage when judging outcome.
The approach is used primarily for selected cases of pulmonary, mitral, or aortic valve stenosis. Selection is clinically important because valvuloplasty is not presented as a universal treatment for every narrowed valve. Its role depends on the clinical situation, including whether surgery carries substantial risk or another treatment is planned.
Percutaneous valvuloplasty may be considered when open-heart surgery poses substantial risk, making a less invasive approach clinically relevant. It can also serve as a bridge to further treatment rather than the final intervention. In that setting, its value lies in relieving the stenotic obstruction while clinicians prepare the next stage of care.
Assessment focuses on whether blood flow improves and whether pressure overload is relieved. Clinicians must also consider symptoms, because the procedure can improve them, as well as possible restenosis or valve regurgitation. Together, these findings show both the potential benefit of enlarging the valve opening and the limitations that may affect longer-term results.