Doctors treating Bolsonaro stated that they blocked the right phrenic nerve and have scheduled a follow-up procedure within 48 hours to block the left phrenic nerve. The phrenic nerve, according to medical literature, is a crucial nerve originating in the neck that controls the diaphragm, the primary muscle used for breathing.

Bolsonaro is currently imprisoned, serving a 27-year sentence after being convicted in September for plotting a coup to overturn his 2022 election loss. The conviction followed investigations into his actions and alleged attempts to subvert the democratic process after his defeat by current President Luiz Inácio Lula da Silva.

The former president's health has been a recurring point of attention. Prior to his recent hernia operation and the phrenic nerve procedure, Bolsonaro had been hospitalized on multiple occasions for various ailments. His supporters have often cited these health issues, while critics have questioned their timing and severity.

The upcoming procedure to block the left phrenic nerve will determine the overall success of the treatment for Bolsonaro's hiccups. Medical professionals will continue to monitor his condition and provide updates as necessary.