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document
Initial clinical experience with implantation of left ventricular lead guided by Overlay Ref for the treatment of congestive heart failure . BACKGROUND Cardiac resynchronization therapy ( CRT ) improves clinical outcome in selected patients with advanced congestive heart failure . The Overlay Ref technique may facilitate the procedure for implanting left ventricular ( LV ) pacing leads to deliver CRT . AIM To assess the feasibility of deploying a LV pacing lead into a coronary sinus side branch guided by Overlay Ref . METHODS Data from 88 consecutive patients who met the CRT implantation criteria in our hospital between 28 November 2007 and 30 December 2009 were randomly assigned to two groups . Forty-four patients underwent CRT device implantation using Overlay Ref to guide target vein selection and advance a specifically designed pacing lead into the target vein ( Overlay Ref group ) ; 44 patients were conventionally implanted ( control group ) . RESULTS LV lead implantation was successful in all patients . Mean CRT total procedure times ( skin-to-skin ) were : Overlay Ref group , 80.7 ± 18.0 min ; control group , 98.5 ± 32.2 min ; p = 0.029 . Mean placement of LV pacing lead into target vein times were : Overlay Ref group , 16.2 ± 7.7 min ; control group , 36.4 ± 23.4 min ; p=0.004 . Mean total fluoroscopy times were : Overlay Ref group , 13.6 ± 4.3 min ; control group , 23.8 ± 15.7 min ; p=0.007 . Mean LV lead fluoroscopy times were : Overlay Ref group , 5.7 ± 2.9 min ; control group , 14.4 ± 4.6 min ; p=0.003 . No major complications occurred . CONCLUSIONS Overlay Ref facilitates location of and entry into the coronary sinus , and shortens the duration of LV pacing lead implantation into the target vein .
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Intervention_Surgical
implantation of left ventricular lead guided by Overlay Ref
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Intervention_Surgical
Cardiac resynchronization therapy ( CRT )
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Intervention_Surgical
CRT .
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Intervention_Surgical
Overlay Ref .
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Intervention_Surgical
CRT
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Intervention_Surgical
Overlay Ref
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Intervention_Surgical
implanted ( control group
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Intervention_Surgical
LV lead implantation
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Intervention_Surgical
Overlay Ref
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Outcome_Physical
outcome
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Outcome_Other
CRT total procedure times ( skin-to-skin )
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Outcome_Other
Mean placement of LV pacing lead into target vein times
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Outcome_Other
Mean total fluoroscopy times
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Outcome_Other
Mean LV lead fluoroscopy
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Participant_Condition
selected patients with advanced congestive heart failure .
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Participant_Age
88 consecutive patients who met the CRT implantation criteria in our hospital between 28 November 2007 and 30 December 2009 were randomly assigned to two groups .
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Participant_Age
44 patients were conventionally implanted ( control group ) .