The Arterial Measurement of the Blood Flow Volume After Iloprost Stimulation (ILOFLOW)
A prospective case-control study was performed to investigate the effect of iloprost on the intraoperative flow volume in diabetic and non-diabetic patients as well as the effect of peripheral neuropathy in patients with peripheral arterial occlusive disease (PAOD) undergoing arterial reconstruction (primary endpoint).
100 patients undergoing femoral artery reconstruction or femorodistal bypass surgery were included. Prior to surgery, peripheral nerve conduction velocity was measured. Blood flow volume at the common femoral artery was assessed using a Doppler flowmeter (Sono TT FlowLab; ) before reconstruction, prior to the intraarterial application of 3000ng of iloprost and 5 and 10 minutes afterwards. Peripheral resistance units (PRU) were calculated as a function of mean systemic arterial pressure (MAP) and flow volume (VF): PRU = MAP (mmHg) / VF (ml/min).
Peripheral Arterial Occlusive Disease
|Study Design:||Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||The Intraoperative Arterial Measurement of the Blood Flow Volume After Iloprost Stimulation in Diabetics and Non-diabetics: Implication for Outcome-prediction and Perioperative Therapy|
- The measurement of the blood flow volume is done with the Sono TT FlowLab (em-Tec GmbH, Munich) ultrasound instrument on the common femoral artery in diabetics and non-diabetics after ilomedin administration. [ Time Frame: 6 weeks after surgery ] [ Designated as safety issue: Yes ]Before surgery reconstruction the first measurement with the Sono TT FlowLab (em-Tec GmbH, Munich) ultrasound instrument will be done on the common femoral artery and then after surgery reconstruction. Therefore there will be different measuring heads exactly fitting around the vessels. Then the administration of 3000ng Ilomedin® in 15ml saline will be injected into the common femoral artery via a a cannula over two minutes if the systolic blood pressure of the patient is over 100mm Hg. The blood flow volume will be measured again after five and ten minutes on the same point. Those results will be documented.
|Study Start Date:||October 2012|
|Estimated Study Completion Date:||October 2015|
|Estimated Primary Completion Date:||October 2015 (Final data collection date for primary outcome measure)|
Experimental: Ilomedin, bloodflow volume, measurement,
Surgery was performed under general anesthesia via a longitudinal skin incision. After systemic administration of 5000 IU of unfractionated Heparin, the peripheral vessels were clamped. Following a longitudinal arteriotomy, thrombendarterectomy of the common femoral artery was performed in all cases, extending into the deep femoral artery and superficial femoral artery when necessary. At the end of the reconstruction, 3000 ng of iloprost (Ilomedin), diluted in 15ml saline solution, were administered into the common femoral artery. Distal to the injection site doppler flow measurement was performed at the common femoral artery prior to arteriotomy, prior to the intraarterial application of iloprost and 5 and 10 minutes afterwards, using the Sono TT FlowLab instrument. During the procedure, systemic arterial blood pressure was continuously documented using a pressure transducer connected to an intraarterial cannula placed in the radial artery of the forearm.
3000ng ilomedin in 15ml salt water will be injected intraarterial into the common femoral artery over 2 minutes for one time,then the investigators will measure the blood flow volume after 5 and then after 10 minutes on the common femoral artery. The patients will be observed by the anaesthesiologist. The patient will get ilomedin one day before the surgery and then for 6 day after surgery into the vein. (10microgramm/o,5ml in 250ml salt water)
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Please refer to this study by its ClinicalTrials.gov identifier: NCT01774058
|Contact: Afshin Assadian, Prim. PD Dr.||+34(0)firstname.lastname@example.org|
|Contact: Kornelia Hirsch, Dr.||+34(0)email@example.com|
|Department of vascular and endovascular surgery, Georg Hagmüller Institute for Vascular Research Wilhelminenhospital||Recruiting|
|Vienna, Austria, 1160|
|Contact: Afshin Assadian, Prim PD Dr +34(0)1491504101 firstname.lastname@example.org|
|Contact: Kornelia Hirsch, Dr +34(0)1491504101 email@example.com|
|Principal Investigator: Afshin Assadian, Prim. PD.Dr|
|Principal Investigator:||Afshin Assadian, Prim PD Dr||Georg Hagmüller Institute for Vascular Research Wilhelminenhospital Vienna, Austria|