Endovascular Therapy Strategy for Acute Embolic Tandem Occlusion: The Pass-Thrombectomy-Protective Thrombectomy

Wen-Huo Chen1, Ting-Yu Yi1, Yan-Min Wu1

  • 1Department of Neurology, Zhangzhou Affiliated Hospital of Fujian Medical University, Fujian, China.

World Neurosurgery
|August 28, 2018
PubMed

Insights

The pass-thrombectomy-protective thrombectomy (double PT) technique is a feasible and safe approach for treating tandem occlusions in acute ischemic stroke patients. This method showed successful recanalization and a good clinical outcome in a small patient cohort.

Area of Science:

  • Neurology
  • Interventional Neurology
  • Vascular Neurology

Background:

  • Embolic occlusions of the common carotid artery (CCA)/internal carotid artery (ICA) and intracranial arteries are common in acute ischemic stroke.
  • These occlusions lead to high morbidity and can be treated with endovascular therapy.
  • Optimal endovascular strategies for tandem occlusions remain unclear.

Purpose of the Study:

  • To evaluate the feasibility of the pass-thrombectomy-protective thrombectomy (double PT) technique.
  • To assess the clinical outcomes of patients treated with the double PT technique for tandem occlusions.

Main Methods:

  • Retrospective analysis of a prospective stroke registry database (January 2015 - February 2017).
  • Inclusion of 7 patients with tandem occlusions of the CCA/ICA and intracranial arteries.
  • Evaluation of clinical outcomes at 3 months using the modified Rankin Scale (mRS).

Main Results:

  • Successful recanalization was achieved in 85.7% of patients.
  • The median reperfusion time was 61 minutes.
  • A good clinical outcome (mRS ≤ 2) was observed in 42.9% of patients, with a 14.3% mortality rate.

Conclusions:

  • The double PT technique is a feasible and safe option for treating initial embolic tandem occlusions of the CCA/ICA.
  • Further research with larger cohorts is warranted to confirm these findings.
Abstract

Related Concept Videos

First Pass Effect01:12

First Pass Effect

Presystemic elimination, or the first-pass effect, is the metabolism of drugs that reduces their effective concentration at the site of action. Apart from the first-pass effect, the systemic bioavailability of the drug is also reduced by other factors, including incomplete absorption or chemical degradation of drugs.
Depending on the route of administration, drugs can be metabolized in the liver, intestine, lungs, and vasculature. Orally administered drugs are first absorbed through the...
9.5K
Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
765
Pulmonary Embolism I: Introduction01:29

Pulmonary Embolism I: Introduction

Pulmonary embolism (PE) occurs when a thrombus, fat or air embolus, amniotic fluid, or tumor tissue blocks one or more pulmonary arteries. These blockages originate in the venous system or the right side of the heart.EtiologyPE primarily arises from deep vein thrombosis (DVT) and other hypercoagulable states, such as inherited thrombophilias. Additional etiological factors include venous stasis, commonly seen in obesity, and endothelial injury from surgery and trauma. Less common causes include...
724
Single-pass Transmembrane Proteins01:25

Single-pass Transmembrane Proteins

Integral membrane proteins are tightly associated with the cell membrane and play a crucial role in cell communication, signaling, adhesion, and transport of the molecules. Some integral membrane proteins are present only in the membrane monolayer. For example, the enzyme fatty acid amide hydrolase is present in the cytoplasmic side of the membrane monolayer. In contrast, another type of integral membrane protein, also known as a transmembrane protein, spans across the membrane. Transmembrane...
6.7K
Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
2.5K
Protection of Alcohols02:31

Protection of Alcohols

This lesson delves into the concept of protection and deprotection of a functional group fundamental to synthetic organic chemistry. These phenomena are explained in the context of aliphatic and aromatic alcohols.
Protection
It defines a protecting group as the masking agent to make the more reactive species inert to a given set of conditions. This concept is depicted via the illustration of liquid flow through different outlets in an assembly of pipes. The analogy helps to understand the role...
8.1K