Comparison of sugammadex and neostigmine-atropine on intraocular pressure and postoperative effects.

During surgery, changes in intraocular pressure (IOP) can be observed resulting from several factors, such as airway manipulations and drugs used. We aimed to investigate the effects of sugammadex and neostigmine on IOP, hemodynamic parameters, and complications after extubation. Our study comprised 60 patients, aged 18-65 years, with a risk status of the American Society of Anesthesiologists I-II who underwent arthroscopic surgery under general anesthesia. The patients were randomly assigned into two groups. At the end of the surgery, the neuromuscular block was reversed using neostigmine (50 µg/kg) plus atropine (15 µg/kg) in Group 1, and sugammadex (4 mg/kg) in Group 2. Neuromuscular blockade was monitored using acceleromyography and a train-of-four mode of stimulation. IOP was measured before induction and at 30 seconds, 2 minutes, and 10 minutes after extubation. A Tono-Pen XL applanation tonometer was used to measure IOP. This showed that elevation in IOP of patients reversed using sugammadex was similar to that recorded in patients reversed using neostigmine-atropine. When heart rate was compared, there was a significant difference between basal values and those obtained at 30 seconds and 10 minutes after extubation in the neostigmine-atropine group. Extubation time (time from withdrawal of anesthetic gas to extubation) was significantly shorter in the sugammadex group (p = 0.003) than in the neostigmine-atropine group. The postextubation IOP values of the sugammadex group were similar to the neostigmine-atropine group. Extubation time (time from withdrawal of anesthetic gas to extubation) was significantly shorter in the sugammadex group (p = 0.003) than in the neostigmine-atropine group.

[Effectiveness of sub-Tenon's block in pediatric strabismus surgery]. / Eficácia do bloqueio subtenoniano em cirurgia de estrabismo pediátrico.

BACKGROUND AND OBJECTIVES: Strabismus surgery is a frequently performed pediatric ocular procedure. A frequently occurring major problem in patients receiving this treatment involves the oculocardiac reflex. This reflex is associated with an increased incidence of postoperative nausea, vomiting, and pain. The aim of this study was to investigate the effects of a sub-Tenon's block on the oculocardiac reflex, pain, and postoperative nausea and vomiting. METHODS: 40 patients aged 5-16 years with American Society of Anesthesiologists status I-II undergoing elective strabismus surgery were included in this study. Patients included were randomly assigned into two groups by using a sealed envelope method. In group 1 (n=20), patients did not receive sub-Tenon's anesthesia. In group 2 (n=20), following intubation, sub-Tenon's anesthesia was performed with the eye undergoing surgery. Atropine use, pain scores, oculocardiac reflex, and postoperative nausea and vomiting incidences were compared between groups. RESULTS: There were no significant differences between groups with regard to oculocardiac reflex and atropine use (p>0.05). Pain scores 30min post-surgery were significantly lower in group 2 than in group 1 (p<0.05). Additional analgesic needed during the postoperative period was significantly lower in group 2 compared to group 1 (p<0.05). CONCLUSIONS: In conclusion, we think that a sub-Tenon's block, combined with general anesthesia, is not effective and reliable in decreasing oculocardiac reflex and postoperative nausea and vomiting. However, this method is safe for reducing postoperative pain and decreasing additional analgesia required in pediatric strabismus surgery.

Effectiveness of sub-Tenon's block in pediatric strabismus surgery.

BACKGROUND AND OBJECTIVES: Strabismus surgery is a frequently performed pediatric ocular procedure. A frequently occurring major problem in patients receiving this treatment involves the oculocardiac reflex. This reflex is associated with an increased incidence of postoperative nausea, vomiting, and pain. The aim of this study was to investigate the effects of a sub-Tenon's block on the oculocardiac reflex, pain, and postoperative nausea and vomiting. METHODS: Forty patients aged 5-16 years with American Society of Anesthesiologists status I-II undergoing elective strabismus surgery were included in this study. Patients included were randomly assigned into two groups by using a sealed envelope method. In group 1 (n=20), patients did not receive sub-Tenon's anesthesia. In group 2 (n=20), following intubation, sub-Tenon's anesthesia was performed with the eye undergoing surgery. Atropine use, pain scores, oculocardiac reflex, and postoperative nausea and vomiting incidences were compared between groups. RESULTS: There were no significant differences between groups with regard to oculocardiac reflex and atropine use (p>0.05). Pain scores 30min post-surgery were significantly lower in group 2 than in group 1 (p<0.05). Additional analgesic needed during the postoperative period was significantly lower in group 2 compared to group 1 (p<0.05). CONCLUSIONS: In conclusion, we think that a sub-Tenon's block, combined with general anesthesia, is not effective and reliable in decreasing oculocardiac reflex and postoperative nausea and vomiting. However, this method is safe for reducing postoperative pain and decreasing additional analgesia required in pediatric strabismus surgery.

Efficacy of resuscitation with Intralipid in a levobupivacaine-induced cardiac arrest model.

AIM: Cardiac toxicity due to the administration of local anesthetics may be fatal. In this study, we evaluated the efficacy of a 20% lipid solution combined with epinephrine in a levobupivacaine-induced cardiac arrest model. MATERIALS AND METHODS: A total of 14 New Zealand rabbits were sedated and mechanically ventilated. Asystole was induced with intravenous levobupivacaine injection. The rabbits were randomized into groups receiving the same volume of either 0.9% saline (CR group) or a 20% lipid solution (LE group) along with a 100 µg/kg epinephrine bolus, which were administered immediately upon asystole. Standard advanced cardiac life support protocols were performed. RESULTS: Four subjects in the LE group as well as 3 subjects in the CR group had a spontaneous recovery (P = 0.592). In the 20th minute after arrest, 3 subjects in the LE group had maintained spontaneous circulation, while there was only 1 subject from the CR group with the same outcome. CONCLUSION: We found that adding a lipid solution to epinephrine for the resuscitation of rabbits that underwent levobupivacaine- induced cardiac arrest increased recovery rates of circulation and therefore the likelihood of survival. Further studies are needed to develop clinical therapies for the systemic toxicity of local anesthetics.

Effectiveness of sub-Tenon's block in pediatric strabismus surgery / Eficácia do bloqueio subtenoniano em cirurgia de estrabismo pediátrico

ABSTRACTBACKGROUND AND OBJECTIVES: Strabismus surgery is a frequently performed pediatric ocular procedure. A frequently occurring major problem in patients receiving this treatment involves the oculocardiac reflex. This reflex is associated with an increased incidence of postoperative nausea, vomiting, and pain. The aim of this study was to investigate the effects of a sub-Tenon's block on the oculocardiac reflex, pain, and postoperative nausea and vomiting.METHODS: 40 patients aged 5-16 years with American Society of Anesthesiologists status I-II undergoing elective strabismus surgery were included in this study. Patients included were randomly assigned into two groups by using a sealed envelope method. In group 1 (n = 20), patients did not receive sub-Tenon's anesthesia. In group 2 (n = 20), following intubation, sub-Tenon's anesthesia was performed with the eye undergoing surgery. Atropine use, pain scores, oculocardiac reflex, and postoperative nausea and vomiting incidences were compared between groups.RESULTS: There were no significant differences between groups with regard to oculocardiac reflex and atropine use (p > 0.05). Pain scores 30 min post-surgery were significantly lower in group 2 than in group 1 (p < 0.05). Additional analgesic needed during the postoperative period was significantly lower in group 2 compared to group 1 (p < 0.05).CONCLUSIONS: In conclusion, we think that a sub-Tenon's block, combined with general anesthesia, is not effective and reliable in decreasing oculocardiac reflex and postoperative nausea and vomiting. However, this method is safe for reducing postoperative pain and decreasing additional analgesia required in pediatric strabismus surgery.

RESUMOJUSTIFICATIVA E OBJETIVO: A cirurgia de estrabismo é um procedimento oftalmológico comum em pediatria. Um grande problema que ocorre com frequência em pacientes submetidos a esse tratamento envolve o reflexo oculocardíaco. Esse reflexo está associado ao aumento da incidência de náusea, vômito e dor. O objetivo deste estudo foi investigar os efeitos do bloqueio subtenoniano sobre o reflexo oculocardíaco, a dor, a náusea e o vômito no período pós-operatório.MÉTODOS: Foram incluídos no estudo 40 pacientes entre 5-16 anos, estado físico ASA I-II, submetidos à cirurgia eletiva de estrabismo. Foram randomicamente alocados em dois grupos, com o método de envelope lacrado. No Grupo 1 (n = 20),pacientes não receberam bloqueio subtenoniano. No Grupo 2 (n = 20), após a intubação, o bloqueio subtenoniano foi feito no olho submetido à cirurgia. Uso de atropina, escores de dor, reflexo oculocardíaco e incidência de náusea e vômito foram comparados.RESULTADOS: Não houve diferença significativa entre os grupos em relação ao reflexo oculocardíaco e ao uso de atropina (p > 0,05). Os escores de dor em 30 minutos de pós-operatório foram significativamente menores no Grupo 2 do que no Grupo 1 (p < 0,05). A necessidade de analgésico adicional durante o período pós-operatório foi significativamente menor no Grupo 2 do que no Grupo 1 (p < 0,05).CONCLUSÕES: O bloqueio subtenoniano, em combinação com anestesia geral, não é eficaz e confiável para diminuir o reflexo oculocardíaco, bem como náusea e vômito pós-operatórios (NVPO). Porém, esse método é seguro para diminuir a dor no período pós-operatório e reduzir a analgesia adicional necessária em cirurgia de estrabismo pediátrico.