Citation: kuc m et al.
Successful pulmonary homograft re-implantation after previous surgical and percutaneous interventions.
Kardiologia polska.
2018 february; 76(2):471.
Doi: 10.
5603/kp.
2018.
0042.
Published online: february 16, 2018.
Earliest date of publish used for date of event.
No unique device identifier (serial/lot) numbers were provided; without this information it could not be determined whether these observations have been previously reported.
Without return of the product no definitive conclusion can be made regarding the clinical observations.
If information is provided in the future, a supplemental report will be issued.
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Medtronic received information from a literature case report regarding a male patient with a medical history of tetralogy of fallot with absent pulmonary valve requiring primary repair (at (b)(6) years of age) and later underwent surgical allograft repair due to allograft stenosis (at (b)(6) years of age).
Seven years later (at (b)(6) years of age), due to recurrence of pulmonary allograft stenosis, the patient underwent transcatheter pulmonary valve implantation with a medtronic melody (serial number not provided).
After the procedure, a right ventricular outflow tract (rvot) peak gradient of 18 mmhg was observed.
One-week after melody implant, transthoracic echocardiography (tte) was performed and revealed a gradient of 76/36 mmhg.
Two months after melody implant, the valve was expanded with a 22-mm balloon.
Following the balloon dilation, the gradient was 35 mmhg, and subsequent tte showed a rvot gradient of 78/44 mmhg.
Recurrent stent recoil was diagnosed.
The patient was referred to surgery, but did not give consent.
Six years after melody implant (at (b)(6) years of age), the patient presented with heart failure and paroxysmal atrial flutter, which impaired cardiac function causing dyspnea at rest and peripheral edema.
Tte revealed pulmonary valve stenosis with peak/mean gradient of 130/75 mmhg and small pulmonary valve insufficiency.
Cardiac magnetic resonance imaging exhibited large dysfunctional right heart chambers.
Computed tomography scan showed stenosis of the pulmonary artery close to the bifurcation and damaged melody valve leaflets.
Subsequently, the melody valve and pulmonary allograft were surgically explanted.
A 25 mm pulmonary allograft was implanted using root-replacement technique.
In the post-operative period, the patient endured right heart insufficiency, which was treated with diuretics.
Tte confirmed good allograft function, which was reflected by a peak gradient of 16 mmhg.
The patient was discharged 13 days after surgery in good condition without peripheral edema.
No additional adverse patient effects or product performance issues were reported.
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