Divided method of intercostal nerve block reduces ropivacaine dose by half in thoracoscopic pulmonary resection while maintaining the postoperative pain score and 4-h mobilization: a retrospective study.

PURPOSE: This study investigated whether the divided method of multi-level intercostal nerve block (ML-ICB) could reduce the ropivacaine dose required during thoracoscopic pulmonary resection, while maintaining the resting postoperative pain scores. METHODS: This retrospective, single-cohort study enrolled 241 patients who underwent thoracoscopic pulmonary resection for malignant tumors between October 2020 and March 2022 at a cancer hospital in Japan. ML-ICB was performed by surgeons under direct vision. The differences in intraoperative anesthetic use and postoperative pain-related variables at the beginning and end of surgery between group A (single-shot ML-ICB; 0.75% ropivacaine, 20 mL at the end of the surgery) and group B (divided ML-ICB, performed at the beginning and end of surgery; 0.25% ropivacaine, 30 mL total) were assessed. The numerical rating scale (NRS) was used to evaluate pain 1 h and 24 h postoperatively. RESULTS: Intraoperative remifentanil use was significantly lower in group B (14.4 ± 6.4 µg/kg/h) than in group A (16.7 ± 8.4 µg/kg/h) (P = 0.02). The proportion of patients with NRS scores of 0 to 3 at 24 h was significantly higher in group B (85.4%, 106/124) than in group A (73.5%, 86/117) (P = 0.02). The proportion of patients not requiring postoperative intravenous rescue drugs was significantly higher in group B (78.2%, 97/124) than in group A (61.5%, 72/117) (P < 0.01). CONCLUSION: The divided method of ML-ICB could reduce the intraoperative remifentanil dose, decrease the postoperative pain score at 24 h, and curtail postoperative intravenous rescue drug use, despite using half the total ropivacaine dose intraoperatively.

Intraoperative Multimodal Approach for Pain After Thoracoscopic Pulmonary Resection.

BACKGROUND: The optimal preemptive analgesia for thoracoscopic surgery remains unclear. We evaluated the utility of intraoperative intravenous analgesia on postoperative pain and the postoperative course in patients who underwent thoracoscopic lobectomy. METHODS: We retrospectively reviewed 228 consecutive patients who underwent single-lobe thoracoscopic lobectomy for malignant pulmonary tumors between October 2017 and December 2019. Instead of epidural anesthesia, intercostal nerve blocks were performed from the thoracic cavity. We assessed the differences in the clinical and perioperative parameters including postoperative pain among the following: (1) N group (nonintraoperative intravenous analgesia), (2) A group (1000 mg acetaminophen), and (3) AF group (1000 mg acetaminophen with 50 mg flurbiprofen axetil). The numerical rating scale (NRS) was used to assess pain. RESULTS: Receiver operating characteristic curve analysis revealed that the optimal cutoff pain score for the additional analgesic within 12 h postsurgery was 3.5 (area under the curve = 0.771; sensitivity = 63%; specificity = 19.4%; 95% confidence interval [CI] = 0.703-0.839; p < 0.01). Less pain scores on the surgical day were related to the AF group (NRS; N, 3 ± 2.6; A, 3 ± 2.4; AF, 2 ± 1.9; p = 0.008, respectively). No pain or mild pain (NRS = 0-2) on the operative day was strongly associated with the AF group (N = 36.4%; A = 46.4%; AF = 70.5%; p = 0.005). None of the patients experienced complications associated with intraoperative intravenous analgesia. CONCLUSION: The combined use of intravenous analgesics (acetaminophen and flurbiprofen axetil) and intercostal nerve blocks is a safe and feasible preemptive analgesic approach for thoracoscopic lobectomy.

Risk factors for postoperative nausea and vomiting after thoracoscopic pulmonary wedge resection: pitfalls of an increased fentanyl dose.

BACKGROUND: Thoracoscopic pulmonary wedge resection (TPWR) is a surgical procedure that can maintain lung function and is less physically invasive to a patient. However, the risk factors for postoperative nausea and vomiting (PONV) following TPWR remain unknown. We aimed to evaluate multiple risk factors of PONV after TPWR and the impact of PONV on postoperative outcomes. METHODS: We retrospectively reviewed consecutive patients who underwent TPWR for malignant pulmonary tumors at our institution between October 2017 and March 2020. We assessed the differences in the clinical and perioperative parameters between the PONV and non-PONV groups. RESULTS: We reviewed 160 patients, of whom 27 (16.9%) had PONV. Sixteen (59.3%) patients with PONV required postoperative antiemetics. Failed mobilization was associated with PONV requiring postoperative antiemetics (P=0.048). In the multivariate analysis, increased fentanyl dose was an independent risk factor for PONV (P=0.022). Using the receiver operating characteristic curve, the optimal cut-off value for PONV was 3.58 µg/kg/hr (area under the curve =0.665; sensitivity =85.2%; specificity =53.4%; 95% confidence interval: 0.562-0.768; P=0.007). For example, in a case of a 50-kg patient who underwent a 70-min operation (our median operative time), the total dose of fentanyl within 208 µg was the cut-off value for preventing PONV. CONCLUSIONS: An increased dose of fentanyl/kg/h was the strongest risk factor for PONV during TPWR. The optimal cut-off value for PONV was 3.58 µg/kg/hr. It is important to avoid the inadvertent administration of intraoperative fentanyl.

Life-threatening massive bleeding in the pulmonary trunk adjacent to the right ventricular outflow tract during the resection of a large mediastinal germ cell tumor: proposed safety measures in the absence of cardiovascular surgeons: a case report.

This report presents an unusual case of life-threatening massive bleeding in the pulmonary trunk adjacent to the right ventricular outflow tract during resection of a large primary mediastinal nonseminomatous germ cell tumor (PMNSGCT) in the absence of cardiovascular surgeons. The patient was a 21-year-old male whose large mediastinal tumor was diagnosed as an extragonadal PMNSGCT, which was a mixture of a yolk sac tumor and an immature teratoma. Generally, chemotherapy causes extensive peripheral tumor necrosis of PMNSGCTs, thus enabling their complete resection. In this case, surgeons considered the resection as possible by dissecting the peripheral necrotic tissue, and cardiovascular surgeons were thus not consulted. Enlarged modified left hemi-clamshell thoracotomy (HCST) was applied. While dissecting around the pulmonary trunk, the assistant-held forceps accidentally touched the tensed pulmonary trunk, which caused bleeding. We immediately contacted the collaborating cardiac surgery department at another hospital for assistance. Meanwhile, massive bleeding occurred, leading to hemorrhagic shock, and thus direct cardiac massage was required. Our team managed to establish a venoarterial (VA) extracorporeal membrane oxygenation (ECMO). After the arrival of cardiac surgeons, a suction circuit was added, and bleeding was stopped using sutures. Finally, complete resection of the tumor was achieved, and the patient awoke the following day without any brain dysfunction. After discussions with all the members involved in the surgery, we developed an in-hospital consensus on how to perform surgeries for large thoracic tumors safely at our cancer center without the cardiovascular surgery department. We herein present the case and consensus and discuss the relevant issues.