Utilidad de la tromboaspiración manual de rutina durante la angioplastía primaria en la preservación del flujo microvascular / Routine thrombi aspiration during primary anngioplasty does not improve micro vascular flow compared to conventional angioplasty in ST elevation myocardial infarction
Rev. chil. cardiol
; 33(3): 173-180, dic. 2014. tab
Article
in Es
| LILACS
| ID: lil-743819
Responsible library:
CL325.1
RESUMEN
Antecedentes La efectividad de la aspiración de trombos de rutina en una angioplastía primaria (AP) es controversial. Objetivo:
Evaluar la efectividad de la aspiración de rutinaria de trombos durante la AP en la preservación del flujo microvascular final, estratificada por horas de presentación.Métodos:
Realizamos un ensayo clínico prospectivo randomizado de 122 pacientes que se presentaron al Hospital Sótero del Río con infarto agudo al miocardio con upradesnivel del ST (IAM c/SDST) a AP + aspiración o sólo AP, evaluando el flujo microvascular final.Resultados:
Se randomizaron 59 pacientes a AP + aspiración y 63 a sólo AP En el grupo de aspiración hubo menor empleo de pre-dilatación (46.4% vs 80.3 por ciento; p=0.01) y menor necesidad de realizar técnicas complejas de bifurcación (3.6 por ciento vs 15.2 por ciento; p=0.03). No observamos diferencias en el flujo microvascular final medido por conteo de cuadros TIMI (cTFC) (25.6 +/- 11.8 vs 24.8 +/- 10.9; p=0.12). No hubo diferencias en el flujo microvascular final, de acuerdo al tiempo de presentación < 3 horas de IAM c/SDST (cTFC 22.3 +/- -9.1 vs 22.4 +/--8; p= 0.2) y > 3 horas de IAM c/SDST (cTFC 27.7 +/- 13.4 vs 25.9 +/- 11.6; p= 0.08).Conclusion:
En nuestra experiencia, no hay mejoría del flujo microvascular final en la tromboaspiración manual de rutina durante la AP como tampoco en el subgrupo de presentación precoz. La menor predilatación y el menor uso de técnicas complejas de bifurcación, podría traducir una angioplastía técnicamente más fácil al aspirar el trombo y permitir una mejor visualización del vasoculpable.ABSTRACT
Background. There is controversy regarding the effectiveness of thrombi aspiration during primary angioplasty for ST elevation myocardial Aim:
to evaluate the effect of routine aspiration of thrombus upon micro vascular flow, both overall and according to the time from initial pain to intervention.Method:
122 patients admitted to a general hospital for acute ST elevation myocardial infarction were prospectively randomized to undergo coronary angioplasty (PTCA) with prior aspiration of thrombi or PTCA alone. The final micro vascular flow was compared between groups. A similar analysis compared patients presenting before or after 3 hours from de initial pain.Results:
59 patients underwent thrombi aspiration followed by PTCA (A+PTCA) and 63 PTCA alone (PTCA). Compared to the PTCA group, the A+PTCA group required less frequently balloon pre-dilation. (46.4 percent vs 80.3 percent; p=0.01) and a need for complex angioplasty of bifurcation lesions (3.6 percent vs 15.2 percent; p=0.03). No difference was observed in final micro vascular flow assessed by cTFC between corresponding groups (25.6 +/- 11.8 vs 24.8 +/- 10.9; p=0.12). Compared to Group A+PTCA, patients undergoing PTCA alone had no difference in final micro vascular flow, irrespective of time from initial pain to PTCA cTFC 22.3 +/- -9.1 vs 22.4 +/--8 in those treated <3 hours from initial pain and 27.7 +/- 13.4 vs 25.9 +/- 11.6, in those treated >= 3 hr after initial pain, respectively.Conclusion:
Manual thrombi aspiration before PTCA in patients with ST elevation myocardial infarction did not improve micro vascular flow, regardless of the time from initial pain to primary PTCA. The lesser need for complex angioplasty and balloon pre-dilatation in patients undergoing thrombi aspiration may reflect a better visualization of affected arteries during PTCA.Key words
Full text:
1
Index:
LILACS
Main subject:
Thrombosis
/
Angioplasty, Balloon, Coronary
/
Thrombectomy
/
Myocardial Infarction
Type of study:
Clinical_trials
/
Guideline
/
Observational_studies
/
Risk_factors_studies
Limits:
Female
/
Humans
/
Male
Language:
Es
Journal:
Rev. chil. cardiol
Journal subject:
CARDIOLOGIA
Year:
2014
Type:
Article