Comparison Postoperative Shoulder Pain, Nausea, and Vomiting Between Low and Normal Pressure Pneumoperitoneum in Laparoscopic Cholecystectomy

AUTHORS

Behzad Nematihonar 1 , Hosein Fahimihanzaei 2 , Mohammadreza Kamranmanesh 3 , Elham Memary 3 , Arash Shahbazi 4 , Alireza Mirkheshti 5 , *

1 Assistant Professor of Surgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran

2 Fellowship of Thoracic and Laparoscopic Surgery

3 Assistant Professor of Anesthesiology, Shahid Beheshti University of Medical Sciences, Tehran, Iran

4 Resident of Surgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran

5 Associate Professor of Anesthesiology, Shahid Beheshti University of Medical Sciences, Tehran, Iran

How to Cite: Nematihonar B, Fahimihanzaei H, Kamranmanesh M, Memary E, Shahbazi A, et al. Comparison Postoperative Shoulder Pain, Nausea, and Vomiting Between Low and Normal Pressure Pneumoperitoneum in Laparoscopic Cholecystectomy, Ann Anesth Crit Care . 2017 ; 2(2):e14917. doi: 10.5812/aacc.14917.

ARTICLE INFORMATION

Annals of Anesthesiology and Critical Care: 2 (2); e14917
Published Online: June 30, 2017
Article Type: Research Article
Received: March 27, 2017
Revised: April 30, 2017
Accepted: May 27, 2017
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Abstract

Background: Low-pressure pneumoperitoneum during laparoscopic surgeries decreases some side effects related to inflate gas into abdominal cavity. The current study aimed at comparing the effects of standard- and low-pressure pneumoperitoneum on shoulder pain, nausea, and vomiting after laparoscopic cholecystectomy.

Methods: In a randomized clinical trial, 202 ASA classes I and II patients, candidates for elective laparoscopic cholecystectomy, were randomly divided into the groups of standard- (12 to 14 mmHg) and low- (6 to 7 mmHg) pressure pneumoperitoneum. Postoperative shoulder pain, nausea, and vomiting were assessed between the 2 groups.

Results: Post-operative shoulder pain was statistically lower in low-pressure group in comparison with standard-pressure group (P = 0.001). Nausea and vomiting were not statistically different between the 2 groups (P = 0.54).

Conclusions: Low-pressure pneumoperitoneum during laparoscopic cholecystectomy was an efficient method to decrease postoperative shoulder pain.

1. Background

Since the last decade laparoscopic cholecystectomy is the gold standard for cholecystectomy, which result in fewer complications and less hospital stay than open surgeries (1, 2). Laparoscopic cholecystectomy can be performed using low-pressure in approximately 90% of people (3). In some studies, it is shown that low-pressure pneumoperitoneum (less than 10 mmHg) is a feasible and safe technique and results in decreased postoperative pain and nearly the same operative time compared with standard-pressure pneumoperitoneum (12 to 16 mmHg) (4). As there are some different conclusions about the benefits of low-pressure pneumoperitoneum than the standard-pressure in laparoscopic cholecystectomy surgeries, it was intended to compare postoperative shoulder pain, nausea, and vomiting in these 2 techniques.

2. Methods

After getting approval by research ethics committee of Shahid Beheshti University of Medical Sciences and written consent from all participants, through a double blinded clinical trial, 202 ASA classes I and II patients within the age range of 15 to 85 years, candidates for elective laparoscopic cholecystectomy, were randomly divided into 2 groups of low-pressure (6 to 8 mmHg) and standard-pressure pneumoperitoneum (12 to 16 mmHg). All cases with pregnancy, purulent cholangitis, carcinomas, previous laparotomy, and history of addiction or psychologic disorders were excluded from the study. If laparoscopic procedures changed to open cholecystectomy or intraoperative bleeding was more than 500 mL, or if the operation took more than 2 hours the case was excluded from the study. All patients were monitored by electrocardiography (ECG), blood pressure and cerebral state index, SpO2 (normal blood oxygen saturation level), and Co2 monitoring. Midazolam 0.02 mg/kg and fentanyl 2 mic/kg intravenous (IV) were injected as premedication. Induction of anesthesia was performed by propofol 1 or 2 mg/kg and atracurium 0.5 mg/kg IV. Maintenance of anesthesia was based on propofol 100 to 150 mic/kg/hour and remifentanil 0.1 mic/kg/hour. According to numerical rating scale (NRS), a segmented numeric version of the visual analog scale (VAS) in which a patient chooses a number (0 - 10) to show the intensity of pain, the postoperative pain shoulder was assessed in the patients. Nausea and vomiting were evaluated based on visualization and patients’ complaint.

3. Results

There was no statistical difference in demographic parameters of patients between the 2 groups (Table 1).

Table 1. Demographic Characteristic of the Study Groups
Low Pressure (101)High Pressure (101)P Value
Age44.5 ± 7.845.3 ± 8.40.24
Gender (male/female)35/6634/670.68
Body mass index26.7 ± 3.626.9 ± 4.10.33
Duration of surgery, min32.5 ± 8.231.6 ± 7.470.25

Nausea and vomiting were assessed after complete awakening of patients in recovery room and no statistical differences were observed between the 2 groups (P = 0.54) (Table 2). Shoulder pain was evaluated during the time of patients’ hospitalization and when they returned for their first visit 14 days after operation, no complaint of shoulder pain was reported; it was tried to treat shoulder pain by analgesics if NRS was more than 3. As shown in Table 2, low-pressure group showed less shoulder pain than the standard-pressure group (P = 0.001).

Table 2. Nausea, Vomiting, and Shoulder Pain in the Study Groups
Low-Pressure (101)High-Pressure (101)P Value
Nausea/vomiting 18190.54
Shoulder pain57860.001

4. Discussion

The current study showed that shoulder pain significantly decreased following laparoscopic cholecystectomy by low-pressure pneumoperitoneum, than laparoscopic cholecystectomy under the standard-pressure pneumoperitoneum. In the current survey, postoperative nausea and vomiting showed no statistical difference between the 2 groups.

In some studies, shoulder tip pain was less during low-pressure laparoscopic procedures (5-7), but there was evidence that the incidence of postoperative shoulder pain was not statistically different between the low- and standard-pressure groups (8). In the current survey, shoulder pain was significantly less during low pressure laparoscopic procedures.

Nausea and vomiting are complications of laparoscopic procedures. The incidence of postoperative nausea and vomiting was assessed following low and normal pneumoperitoneum and the results were different. In some surveys there were no differences between the incidence of postop nausea and vomiting in low- and standard-pressure pneumoperitoneum (9, 10), but some studies showed that the level of liver enzymes was controlled better during low-pressure pneumoperitoneum (11, 12). This finding may indirectly have a role in the prevention of postoperative nausea and vomiting. The current study showed that the incidence of nausea and vomiting was not significantly different between the 2 levels of gas pressure.

The effects of low-pressure pneumoperitoneum on different organs were evaluated. For example, the beneficial effects of low-pressure procedures on liver function were demonstrated in some studies (13-15). However, some studies showed the side effects of low-pressure and standard-pressure pneumoperitoneum in laparoscopic cholecystectomy on different organs are comparable (16-18).

Finally, the beneficial effects of low-pressure laparoscopic procedures are still under evaluation and there is a need to study more about the effects of this technique in practice.

4.1. Conclusion

It was concluded that the incidence of postoperative shoulder tip pain following laparoscopic cholecystectomy under low-pressure pneumoperitoneum was significantly less than the procedure under the standard-pressure pneumoperitoneum. Nevertheless, more studies should be performed to assess the beneficial effects and even the hazards of low-pressure laparoscopic procedures.

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