80As regards, in the third place, the adoption in the issuing Member State of measures, such as the establishment of an ombudsman system or establishment of courts of enforcement of penalties, which are intended to reinforce the monitoring of detention conditions in that Member State, it must be stated that such monitoring, including judicial review of those detention conditions carried out subsequently is an important factor, which may act as an incentive to the authorities of that State to improve detention conditions and which may therefore be taken into account by the executing judicial authorities when, for the purpose of deciding on whether a person who is the subject of a European arrest warrant should be surrendered, they make an overall assessment of the conditions in which it is intended that the person will be held. However, the fact remains that such a review is not, by itself, capable of averting the risk of that person being subjected, following his surrender, to treatment that is incompatible with Article 4 of the Charter on account of the conditions of his detention (see, to that effect, judgment of 25 July 2018, Generalstaatsanwaltschaft (Conditions of detention in Hungary), C‑220/18 PPU, EU:C:2018:589, paragraph 74).
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