|Year : 2014 | Volume
| Issue : 1 | Page : 10-13
Anaesthetic consideration during laparoscopic bilateral simultaneous nephrectomy
Manisha P Modi1, Kalpana S Vora1, Geeta P Parikh1, Pranjal R Modi2, Veena R Shah1
1 Department of Anaesthesia and Critical Care, GR. Doshi and KM Mehta Institute of Kidney Diseases and Research Centre; Department of Anaesthesia and Critical Care, Dr. HL Trivedi Institute of Transplantation Sciences, Asarwa, Ahmedabad, Gujarat, India
2 Department of Urology, Dr. HL Trivedi Institute of Transplantation Sciences, Asarwa, Ahmedabad, Gujarat, India
|Date of Submission||17-Mar-2013|
|Date of Acceptance||27-May-2013|
|Date of Web Publication||6-Jan-2014|
Manisha P Modi
Department of Anaesthesia and Critical Care, GR Doshi and KM Mehta Institute of Kidney Diseases and Research Centre and Dr. HL Trivedi Institute of Transplantation Sciences, Civil Hospital campus, Asarwa, Ahmedabad - 380 016, Gujarat
Source of Support: None, Conflict of Interest: None
Study Objective: To assess outcome from anaesthesia during laparoscopic bilateral simultaneous nephrectomy. Design: Retrospective study. Measurements: Preoperative Hb%, serum potassium, coagulation profile electrocardiography (ECG) changes, 2D Echography, x-ray chest, haemodynamic changes, end-tidal carbon dioxide (EtCO 2 ), fluid management and postoperative analgesia. Results: The mean age was 24.75 ± 14.35 years. The mean duration of surgery was 120 ± 80 minutes. The Hb%, serum creatinine and serum potassium were 9.4 ± 1.04%, 6.79 ± 4.91 meq/L and 3.61 ± 0.51 meq/L, respectively. Pulse rate mean blood pressure and EtCO 2 were recorded after creation of pneumoperitoneum and at 15, 30, 45 and after exsufflation of pneumoperitoneum. After pneumoperitoneum, there was increase in pulse rate, systolic blood pressure, diastolic blood pressure and EtCO 2 . After 30 minutes and throughout the surgery, these variables remained stable. Four patients required nitroglycerine infusion for intraoperative hypertention. Only one patient required packed cell volume (PCV) transfusion and total intravenous fluid was 1 ± 0.5 L. At the time of exsufflation, there was decrease in pulse rate, systolic and diastolic blood pressure and EtCO 2 . Conclusion: Because of advancement in anaesthetic agents and muscle relaxant, there is safe outcome from anaesthesia during laparoscopic bilateral simultaneous nephrectomy.
Keywords: Anaesthesia, bilateral nephrectomy, laparoscopy
|How to cite this article:|
Modi MP, Vora KS, Parikh GP, Modi PR, Shah VR. Anaesthetic consideration during laparoscopic bilateral simultaneous nephrectomy. J Min Access Surg 2014;10:10-3
|How to cite this URL:|
Modi MP, Vora KS, Parikh GP, Modi PR, Shah VR. Anaesthetic consideration during laparoscopic bilateral simultaneous nephrectomy. J Min Access Surg [serial online] 2014 [cited 2019 Dec 8];10:10-3. Available from: http://www.journalofmas.com/text.asp?2014/10/1/10/124453
| ¤ Introduction|| |
Prerenal transplant nephrectomy is indicated for calculus disease, reflux, uncontrolled hypertension and polycystic kidney disease. These patients are very sick in view of their medical condition. Anaesthesia for these patients requires thorough preoperative evaluation and stabilisation of their general condition. There is paucity of information regarding anaesthetic outcome in this anephric patients. Therefore, we conducted this retrospective study in chronic renal failure patients who underwent bilateral laparoscopic simultaneous nephrectomy. Their preoperative investigations, intraoperative haemodynamic and intravenous fluid management were noted and analysed.
| ¤ Materials and Methods|| |
The study group was composed of 10 patients aged 24.75 ± 14.56 years (adult male) with American Society of Anaesthesiologists (ASA II-III) who underwent elective laparoscopic retroperitoneal bilateral simultaneous nephrectomy for different indications over a 3-year period from 2006 to 2010. After thorough preoperative evaluation and preparation, all patients were scheduled for surgery. They all were underwent their regular haemodialysis 6 hours before the surgery. They were kept nil per oral for overnight. On the day of surgery, morning serum potassium (S.K), electrocardiography ECG and coagulation profile were obtained. They were advised to take morning dose of regular treatment for hypertension and anticonvulsant. In operating room, after securing intravenous cannula and protection of arteriovenous fistula all patients were given general anaesthesia. They were premeditated with intravenous glycopyrolate 0.004 mg and 3 μg/kg fentanyl citrate. Injection thiopental sodium 3-4 mg/kg was used for induction and endotracheal intubation was facilitated with injection suxamethinium 1-1.5 mg/kg and maintained with gas, oxygen and isoflurane. Intermittant atracurium was used as muscle relaxant. They were monitored with ECG, Non-Invasive Blood Pressure (NIBP), Saturation of Peripheral Oxygen (SPO2), end-tidal carbon dioxide (EtCO 2 ) and temperature probe. Pulse rate, systolic blood pressure, diastolic blood pressure and EtCO 2 were recorded after creation of pneumoperitoneum then after 15, 30, 45 minutes and after exsuffflation. Normal saline was given as intravenous fluid and blood loss was replaced with PCV followed by injection calcium gluconate. Nephrectomy was carried out using retroperitoneal approach in kidney position. After completion of one side of nephrectomy another side was performed. Total surgical time and total intravenous fluid were noted. Injection tramadol 2 mg/kg was given for postoperative analgesia along with inj ondansetron 2 mg. At the completion of surgery, all patients were reversed from neuromuscular blockade and shifted to intensive care unit.
Statistical Analysis was performed using Statistical Package Of Social Sciences i.e. SPSS version 12. Data are expressed as mean ± SD (standard deviation) for Continuous variables and no (%) for categorical variables. Continuous variables were compared using independent t-test and Mann-Whitney U-test. Also related variables were compared using Paired sample t-test and Wilcoxon Signed ranks test. P < 0.05 is considered to be statistically significant.
| ¤ Results|| |
Among 10 patients, six patients were on antihypertensive drugs, one on anticoagulant, one on digoxin and one was diabetic on insulin. The mean age was 24.75 ± 14.35 years. The mean duration of surgery was 120 ± 80 minutes. The Hb%, serum creatinine and SK were shown in [Table 1]. ECG, 2D Echo and x-ray chest finding were presented in [Table 2]. Pulse rate mean blood pressure and EtCO 2 were recorded after creation of pneumoperitoneum and at 15, 30, 45 and after exsufflation of pneumoperitoneum. After pneumoperitoneum, there was increase in pulse rate from 91.3 ± 18.7/min to 97.7 ± 20.9/min (P < 0.506), systolic blood pressure from 142.3 ± 19.1 mmHg to 157 ± 35.6 mmHg (P < 0.838), diastolic blood pressure from 90.1 ± 1 mmHg to 98 ± 9.19 mmHg (P < 0.143) and EtCO 2 from 28.6 ± 2.91 to 31.8 ± 3.68 (P < 0.475), [Table 3]. After 30 minutes, these variables remained stable throughout the surgery. Four patients required nitroglycerine infusion for intraopearative hypertention. Only one patient required PCV transfusion and total intravenous fluid was 1 ± 0.5 L. At the time of exsufflation, there was decrease in pulse rate, systolic and diastolic blood pressure and EtCO 2. All patients were ventilated with tidal volume of 7-10 ml/kg and respiratory rate of 12-14/min which was adjusted to keep the EtCO 2 between 35 mmHg and 40 mmHg. The hemodynemic and changes in EtCO 2 during right and left nephrectomy were comparable. There was no change in temperature throughout the procedure. Three patients had mild-moderate pulmonary hypertension.
|Table 3: Comparison between right and left nephrectomy (% increase in values of all variables with baseline)|
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| ¤ Discussion|| |
Anaesthesia for bilateral simultaneous nephrectomy represents a significant challenge and successful management of these patients requires systemic approach to preoperative evaluation and careful selection of anaesthetic agents. End stage renal disease is a multisystem disorder and is associated with increased risk of cardiovascular co morbidity and increased severity of cardiovascular disease. Apart from the impact of surgery and co morbidity, the main perioperative care issues to be considered in this patient population are impact of haemodialysis and anephric state.
The problems associated with haemodialysis are increased bleeding complications, arrthymias, and poor blood pressure control including hypertension and hypotension which may be aggravated by laparoscopic surgery. We have observed same hemodynamic and EtCO 2 changes after creation of pneumoperitoneum as in healthy population.  In our study, four patients required injection nitroglycerine for control of hypertension, this might be due to pneumoperitonium.
The most common cardiovascular issues in these patients are arteriosclerosis mediated hypertension, ischemic heart disease, impaired systolic and/or diastolic ventricular function and arrhythmogenic sudden cardiac death.  Our three patients had Left ventricular hypertrophy (LVH), two had low ejection fraction and global left ventricular dysfunction. None of our patient had arrhythmias or any adverse cardiac event. The presence of severe pulmonary hypertension should be determined preoperatively as it will have a significant impact on the anaesthetic management of the patient.  Management goals should centre on the avoidance of hypoxia, hypercapnia, acidosis and hypotension as each of these factors will increase pulmonary vascular resistance. Our three patients had mild-moderate pulmonary hypertension. Close attention should be paid to establishing the correct dry weight for the patient. If the patient is above their dry weight preoperatively, they risk for pulmonary oedema and poorly controlled hypertension perioperatively and poor tissue healing postoperatively. If under their dry weight, they may become profoundly hypotensive during surgery which will be exacerbated by blood loss and anaesthetic agents. An arteriovenous access may be at risk for thrombosis from hypotention. Access function should be checked as part of the postoperative evaluation. Careful consideration should be given to the type and quantity of fluid to be administered during surgery. This will be determined by the preoperative hydration status of the patient, duration of surgery and the estimated fluid losses during surgery. We had infused normal saline to maintain hydration and surgical loss.
In anephric patients, there is failure to normally excrete and/or metabolise anaesthetics and analgesics leading to toxic levels of these agents and difficulty in adjusting fluid and electrolytes in the perioperative period. Potential alterations in volume of distribution, protein binding, drug metabolism and excretion must be considered carefully before deciding upon a particular anaesthetic technique. We have used fentanyl as premedication as it is safe in renal failure.  A significant hyperkalemic response to suxamethonium is not observed in chronic renal failure provided the preoperative serum potassium level is within normal limit. In our all patients' serum potassium level was normal so we had used suxamethonium to facilitate endotracheal intubation and we did not observed hyperkalemic response. Our result was similar with the study of Thapa et al.,  Sevoflurance has been used in renal disease and it appears safe from serum inorganic fluoride levels and elimination rate than the healthy control. , We used atracurium as muscle relaxant. Anephric patients distribute and eliminate atracurium much as normal patients do. Pharmacodynamic measurements show almost identical times for duration and recovery from neuromuscular blockade in normal and anephric patients under isoflurane anaesthesia.  Our all patients had smooth recovery from neuromuscular blockade. Vecuronium and rocuronium are significantly prolonged in renal failure because of reduced clearance.  Intravenous access and blood pressure monitoring should be avoided in the arteriovenous fistula arm. Crystalloid/colloid can be used for maintenance or replacement fluid. In this patient population, maintenance fluid must be o restricted, however, ongoing sequestration or overt losses should be replaced with either crystalloid, colloid or blood products. The choice of fluid depends on patients electrolytes. We have used 0.9 normal saline but we can used ringer's lactate if serum potassium is low. Blood loss can be replaced with packed cell volume/washed RBCs.
| ¤ Conclusion|| |
Because of advancement in anaesthetic agents and muscle relaxant, there is safe outcome from anaesthesia during laparoscopic bilateral simultaneous nephrectomy.
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[Table 1], [Table 2], [Table 3]