Anaesthesia for Laparoscopic Surgery in Urology

Cranial Electrode Belt Position Improves Diagnostic Possibilities of Electrical Impedance Tomography during Laparoscopic Surgery with Capnoperitoneum

Laparoscopic surgery with capnoperitoneum brings many advantages to patients, but also emphasizes the negative impact of anesthesia and mechanical ventilation on the lungs. Even though many studies use electrical impedance tomography (EIT) for lung monitoring during these surgeries, it is not clear what the best position of the electrode belt on the patient's thorax is, considering the cranial shift of the diaphragm. We monitored 16 patients undergoing a laparoscopic surgery with capnoperitoneum using EIT with two independent electrode belts at different tomographic levels: in the standard position of the 4th-6th intercostal space, as recommended by the manufacturer, and in a more cranial position at the level of the axilla. Functional residual capacity (FRC) was measured, and a recruitment maneuver was performed at the end of the procedure by raising the positive end-expiratory pressure (PEEP) by 5 cmH2O. The results based on the spectral analysis of the EIT signal show that the ventilation-related impedance changes are not detectable by the belt in the standard position. In general, the cranial belt position might be more suitable for the lung monitoring during the capnoperitoneum since the ventilation signal remains dominant in the obtained impedance waveform. FRC was significantly decreased by the capnoperitoneum and remained lower also after desufflation.

Current Strategies in Pain Regimens for Robotic Urologic Surgery: A Comprehensive Review

Context

Robotic surgery is becoming the most common approach in minimally invasive urologic procedures. Robotic surgery offers less pain to patients because of smaller keyhole incisions and less tissue retraction and stretching of fascia and muscular fibers. Tailored pain regimens have also evolved and allowed patients to feel minimal to no discomfort after robotic urologic surgery, allowing in parallel better surgical outcomes. This study aims to analyze the most current pain regimens in robotic urologic surgery and to evaluate the most current pain protocols and corresponding outcomes.

Evidence Acquisition

A literature review was performed of published manuscripts utilizing Pubmed and Google Scholar on pain protocols for patients undergoing robotic urologic surgery.

Results

Multimodal analgesia is gaining ground in robotic urologic surgery. Regional analgesia includes four major modalities: Neuroaxial analgesia, intercostal blocks, tranvsersus abdominis plane blocks, and paravertebral blocks. Each approach has a different injection site, region of analgesia coverage, and duration of coverage depending upon local anesthesia and/or adjuvant utilized with advantages and disadvantages that make each modality unique and efficacious.

Conclusions

Robotic urologic surgery has offered the advantage of smaller incisions, faster recovery, less postoperative opioid consumption, and better surgical outcomes. Neuraxial, intercostal, transversus abdominis plane, and quadratus lumborum blocks are the best and most adopted approaches which offer optimal outcomes to patients.

Role of multimodal anaesthetic in post-operative analgesic requirement for robotic assisted radical prostatectomy

PURPOSE

Robotic assisted laparoscopic radical prostatectomy (RARP) is considered as standard of care for surgical management of localised prostate cancer. Procedure specific postoperative pain management (PROSPECT) guidelines are available for open radical prostatectomy. There is a lack of evidence for optimal pain management protocol in patients undergoing robotic radical prostatectomy. This study investigates the impact of multimodal anaesthetic on post-operative analgesic requirements.

METHODS AND MATERIALS

In our Institute, RARP is performed with a multimodal anaesthetic technique. Forty-one consecutive cases from October 2018 to March 2019 operated on by the same surgeon and anaesthetised by the same anaesthetic consultant were included in the study. All the patients received standardised multimodal anaesthetic technique. Data from visual analogue pain scores, nausea, vomiting and requirement of analgesics were collected from hospital records and results were analysed.

RESULTS

Our results showed that 60% of patients reported either no pain or mild pain. None of the patients required stronger opioids or parenteral analgesic. Only three patients required antiemetic. Length of hospital stay was 1.19 days which is comparable to published outcomes from high volume centres performing RARP.

CONCLUSION

Our study adds to the currently published literature that RARP when combined with the multimodal anaesthetic technique can significantly reduce stronger opioid analgesic requirement in the post-operative period without compromising LOS.

Obesity is an adverse factor on laparoscopic radical nephrectomy for t2 but not t1 renal cell carcinoma

Purpose

Laparoscopic radical nephrectomy (LRN) is more challenging with increases in body mass index (BMI). Several recent studies have shown, however, that LRN can be safely performed even in obese patients. The influence of obesity on the perioperative outcomes of LRN has not been well elucidated for large renal tumors (>7 cm), however. We estimated the impact of obesity on LRN for stage T1 and T2 renal cell carcinoma (RCC).

Materials and Methods

From January 2004 to March 2011, 266 patients underwent LRN (T1: 195, T2: 71). These patients were subdivided into the following two groups according to BMI: the nonobese group (BMI less than 25 kg/m²) and the obese group (BMI greater than 25 kg/m²). Perioperative outcomes were retrospectively compared between these two groups in T1 and T2 RCC patients.

Results

There were no significant differences in perioperative outcomes between the obese and nonobese groups of T1 RCC patients. However, in T2 RCC patients, operative time and complication rate were significantly increased in the obese group.

Conclusions

Our results suggest that LRN can be safely performed in Korean patients with T1 RCC regardless of obesity. In T2 RCC patients, however, LRN may become more difficult with increasing BMI considering a longer operation time as well as a higher complication rate. We suggest that LRN for obese patients with T2 RCC be carefully considered.