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JSLS : Journal of the Society of Laparoscopic & Robotic Surgeons logoLink to JSLS : Journal of the Society of Laparoscopic & Robotic Surgeons
. 2021 Apr-Jun;25(2):e2021.00027. doi: 10.4293/JSLS.2021.00027

Time Characteristics of Shoulder Pain after Laparoscopic Surgery

Xinyou Li 1,2, Kezhong Li 3,
PMCID: PMC8249218  PMID: 34248341

Abstract

Objective:

To explore the time characteristics of shoulder pain after laparoscopic gynecological operation.

Methods:

We conducted prospective clinical observations and literature review. We studied 442 cases of laparoscopic gynecological surgery. We used a visual analogue scale to evaluate the pain of patients at different time points after operation. We searched the English literature of shoulder pain after gynecological laparoscopic surgery. The observation time points of these studies included 12–24 hours or the first day after surgery, and at least one time point before this time point.

Results:

The total incidence of shoulder pain was 68%. More than 90% of patients begin to feel shoulder pain on the first day after surgery, not on the day of surgery. 26 articles observed the severity of postlaparoscopic shoulder pain (PLSP) at different time points, of which 17 articles found that the intensity of the shoulder pain peaked at 12–24 hours or the first day after operation.

Discussion:

The occurrence of PLSP presents obvious time characteristics. The incidence and severity of PLSP peaked on the first day or 12–24 hours after operation. To prevent and treat PLSP better, clinicians should make a more in-depth study according to the time characteristics of PLSP.

Keywords: Shoulder pain, Laparoscopy, Temporal characteristics

INTRODUCTION

Minimally invasive is one of the principles of modern surgery. In recent surgical practice, laparoscopy is replacing conventional laparotomy because of several of its advantages. Over 8000 laparoscopic operations are performed in our hospital every year. A substantial number of patients complain of postlaparoscopic shoulder pain (PLSP), which can be more uncomfortable than abdominal incisional and visceral pain after surgery.1 To prevent and treat it better, it is necessary for clinicians to understand its characteristics.

MATERIALS AND METHODS

This study was reviewed and approved by the Institutional Review Board and was registered with the Chinese Clinical Trial Registry.

We studied 442 inpatients (ASA level I) that underwent elective gynecological laparoscopic surgery. Exclusion criteria included chronic pain syndromes such as fibromyalgia or neck and shoulder pain, history of long term use of daily opioids, allergies to medications used in this study (such as fentanyl, propofol, midazolam), impaired cognitive function or inability to understand the study protocol, communication barriers, unstable cardiovascular disease and hypertension, central nervous system disease, endocrine system diseases, and liver and kidney dysfunction.

All patients received similar general anesthetic and surgical regimens. No premedication was used. Heart rate, arterial blood pressure, and oxygen saturation were monitored in all patients on arrival at the anesthetic room. General anesthesia was induced with midazolam (0.1 mg/kg), fentanyl (4 μg/kg), and propofol (1–2 mg/kg). Cisatracurium infusion was used to facilitate tracheal intubation (0.15 mg/kg) and obtain intraoperative muscle relaxation. Anesthesia was maintained with oxygen in air (1:2), sevoflurane, propofol, and remifentanil. Minute ventilation was adjusted in accordance with the arterial CO2 pressure in the exhaled air (PetCO2). Ondansetron (8 mg) was administered intravenously by anesthesiologists to minimize postoperative nausea and vomiting when the surgeons began to close the umbilical trocar sites. At the end of surgery, neuromuscular relaxation was reversed pharmacologically using atropine and neostigmine.

All patients were set in the lithotomy position and trendelenburg position during the operation. Laparoscopy was performed with abdominal insufflation of CO2 (unheated, unhumidified) at 12-mm Hg using a standard automated insufflator. All operations were conducted by experienced laparoscopic surgeons using the standard technique with one 10-mm and two 5-mm trocars. The CO2 was evacuated at the end of the procedure by manual compression of the abdomen with open trocars. All patients were kept for observation in the PACU until their condition was stabilized before shifting them to their designated wards.

The following prophylactic analgesic standard treatment was used: intravenous propacetamol (1 g) was used approximately 20 min before the end of surgery, and either intravenous pentazocine (30 mg in the PACU) or orally ibuprofen sustained release capsules (300 mg in the ward) were administered on demand.

All patients were assessed with visual analogue scale (VAS). We evaluated the shoulder pain before the patients left the PACU and at 6, 12, 24, 48, and 72 hours after surgery.

The review has been performed by a search on PubMed, Medline, and OVID with the key words: “shoulder pain”, “laparoscopy”, “laparoscopic surgery”, “gynecologic surgery”, “gynecology”, “endoscopic”, “pain”, and “postoperative pain”. We only searched English literatures published before Jun 2020.

RESULTS

Because of the tumor or serious abdominal adhesion, 4 patients changed to open surgery. One case underwent emergency operation due to postoperative abdominal hemorrhage. The 437 patients completed the study. Baseline characteristics of the 437 patients are shown in Table 1. Our study showed a 68% (297/437) incidence of PLSP. Over 90% of these patients developed shoulder pain on the first day after surgery.

Table 1.

Demographic and Clinical Characteristics of Postlaparoscopic Shoulder Pain in 437 Study Patients

Data
Age (years) 34.5 (21–58)
Body mass index (kg/m2 ) 23.7 (15.7–34.8)
Operation time (min) 90 (20–235)
Anesthesia General anesthesia with tracheal intubation
Type of laparoscopy
 Diagnostic 128 (29.3)
 Coagulate endometriosis 37 (8.5)
 Adhesiolysis 58 (13.3)
 Ovarian cystectomy 42 (9.6)
 Tuboplasty 49 (11.2)
 Myomectomy 38 (8.7)
 Salpingectomy 39 (8.9)
 Combined 46 (10.5)
VAS score
 Before patients left PACU 0.00 ± 0.00
 6 h 0.00 ± 0.00
 12 h 1.32 ± 1.92
 24 h 2.62 ± 2.28
 48 h 1.69 ± 2.02
 72 h 0.83 ± 1.52

Data are presented as means [interquartile range], mean ± SD or numbers (%).

We only looked at the literature on the incidence and (or) severity of shoulder pain at different time points after operation, rather than the literature with only one observation time point. We screened 41 articles. Twenty-seven of them met our requirements.228 The observation time points of these studies included 12–24 hours or the first day after operation, and at least one time point before this time point. Seven of them observed the incidence of PLSP at different times, and five reported that the incidence of PLSP peaked at 24 hours after operation (Table 2). Two articles did not provide the incidence of shoulder pain at different time points in the control group and the intervention group. 100% (5/5) of the studies found that the intervention did not change the time characteristics of shoulder pain incidence. Among them, 26 articles observed the severity of PLSP at different time points. A total of 55 groups were observed. The shoulder pain of 30 groups reached the peak at 12–24 hours or the first day after operation (Table 3, Table 4). Although the interventions in these studies were statistically significant compared to the control group, 70.8% (17/24) of the studies found that the intervention did not change its time characteristics based on the study of shoulder pain severity.

Table 2.

Systematic Review of the Literature

Author Patients Incidence of Shoulder Pain (%)
n 1 h 2 h 3 h 4 h 6 h 8 h 12 h 24 h 48 h Overall
LTV group 28 21.4 39.3 46.4a 32.1 57.1
Liu2 Total 60 11.7 30 35 36.6a 20
Group 1 30 86
Group 2 30 67
Kerimoglu3 Total 93
Drain group 44 63.6a 43.6
No-drain group 49 67.8a 48.2
Abbott4 Total 161
Placebo group 79 24 34a 20
Drain group 82 12 23a 8
Bogani5 Total 42
LPP group 20 5 10 5
SPP group 22 36 41a 5
Sharami6 Total 131 54.2 58a 48.9 58
Control group 64
Intervention group 67
Shen7 Total 164
Drains group 80 11 23a 9
No-drains group 84 20 40a 21
Zhang8 Total 123 Rest/motion 54
Group C 42 12.3/28.6 40.5/57.1a 12.3/38.1 61.9
Group M 40 7.5/22.5 17.5/37.5a 10/17.5 37.5
Group S 41 12.2/19.5 22/58.5a 12.2/37.1 61

Values are meant as median (SD) unless indicated otherwise.

Overall: the total incidence of PLSP during postoperative observation (in each group, the number of patients with VAS = 0 at each time point was recorded to evaluate the overall incidence of PLSP); LPP group: low pneumoperitoneum pressure group; SPP group: standard pneumoperitoneum pressure group.

aThe patient's shoulder pain reached its peak.

Table 3.

Systematic Review of the Literature

Author Patients Representation of data Intensity of Shoulder Pain after Laparoscopy (PLSP)
N 1 h 2 h 3 h 4 h 6 h 8 h 12 h 16 h 24 h 36 h 48 h Overall
Kerimoglu3
 Total 93 VAS Mean (SD)
 Drain group 44 2.7a (1.7) 0.9 (1.1)
 No-drain group 49 2.4a (1.6) 0.8 (0.8)
Abbott4
 Total 161 VAS Mean
 Placebo group 79 34 44a 26
 Drain group 82 30 40a 26
Bogani5
 Total 42 VAS Mean (SD)
 LPP group 20 0.8 (3.5) 1.1a (3.7) 0.5 (2.4)
 SPP group 22 5.0 (7.3) 8.2a (12.7) 0.5 (2.5)
Sharami6
 Total 131 VAS Mean (SD)
 Control group 64 3.6a (3.5) 3.4 (2.9) 2.6 (2.4) 1.5 (1.6)
 Intervention group 67 1.28a (1.7) 1.19 (1.7) 0.89 (1.3) 0.46 (0.72)
Shen7
 Total 164 VAS Mean (SD)
 Drains group 80 0.8 (0.6) 2.2a (1.1) 1.5 (1.0)
 No-drains group 84 0.9 (0.7) 3.8a (1.3) 2.5 (1.2)
Phelps9
 Total 100 VAS Mean (SD)
 Control group 46 30.3a (4.5) 25.7 (4.7) 21.7 (4.3)
 Intervention group 54 15.6a (3.0) 10.8 (2.4) 9.1 (2.5)
Chaichian10 12 VAS Mean (SD) 0.8a (1.7) 0.8 (1.5) 0.3 (0.8) 0.1 (0.3)
Median (range) 0 (0–6) 0 (0–5) 0 (0–2) 0 (0–1)
Swift11
 Total 67 VAS Median (range)
 Blocked gas drain group 30 0 (0–6) 3.25a (0–9) 3 (0–8) 1.5 (0–7)
 Patent gas drain group 37 0 (0–9) 0 (0–9.5) 0 (0–9) 0 (0–8.5)
Sroussi12
 Total 60 NRS Mean (range)
 AirSeal 7 mm Hg group 30 0.8a (0–7) 0.7 (0–7) 0.5 (0–6)
 Standard 15 mm Hg group 30 2.1 (0–8) 2.6a (0–10) 1. (0–6)
Valadan13
 Total 40 VAS Mean (SD)
 Placebo group 20 4.5a (3.5) 4.3 (3.2) 3.4 (2.9)
 Gabapentin group 20 1.7 (1.8) 2.8a (2.9) 1.6 (2.2)
Leelasuwattanakul14
 Total 74 VAS Median
(min-max)
 Control group 37 4.2a (2–8.8) 3.5 (2.0–8.3) 2.1 (1.5–8.5)
 Study group 37 0.2a (0–7) 0 (0–8) 0 (0–7.5)
Herrmann15
 Total 97 VAS Mean
Median (range)
 Control group 49 0.65
0 (0–8.7)
0.23
0 (0–3.6)
0.45
0 (0–7.2)
1.61
0 (0–10)
1.62a
0.1* (0–10)
 Intervention group 48 0.13
0 (0–2.7)
0.21
0 (0–5.4)
0.09
0 (0–2.4)
1.24*
0 (0–8.3)
1.23
0 (0–8.4)
Radosa16
 Total 289 NRS Mean (SD)
 Control group 96 2.23 (1.52) 5.14a (1.49) 4.22 (1.43)
 EAV group 98 2.18 (1.39) 4.28a (1.51) 3.64 (1.66)
 EAV and TSI group 95 2.52 (1.38) 4.15a (1.48) 3.72 (1.64)
Hoyer-Sorensen17
 Total 40 VAS Median
 Conventional group 20 0.6 (IQR0) 1.4a (IQR2)
 LESS group 20 2.4 (IQR5) 3.1a (IQR4) 4.73
1.6 (0–24.4)
Bunyavejchevin18
 Total 60 VAS Mean (SD)Range 2.62
0.35* (0–11.2)
 Control group 30 2.0 (1.6)
1.6–2.8
4.5 (1.7)
4.0–5.1
4.5a (2.0)3.9–5.2 3.7 (1.8)3.2–4.3
 Treatment group 30 0.7 (1.2)0.2–1.2 1.6a (1.5)1.2–2.3 1.1 (1.3)
0.6–1.7
0.7 (1.1)0.3–1.2
Chou19
 Total 79 VAS Mean (SD)
 Group A 26 0.33 (0.84) 0.50 (1.29) 0.83a (2.00) 0.56 (1.29)
 Group B 26 0.32 (0.84) 0.55 (1.22) 0.64a (1.14) 0.64 (1.18)
 Group C 27 0.53 (1.23) 1.58a (2.82) 1.21 (1.99) 1.68 (2.79)
Narchi20
 Total 65 VAS Mean (SD) Time 0
 Control group 15 1.14 (2.22) 4.13a (2.83) 4.01 (2.75) 2.42 (2.54) 2.75 (3.2) 1.43 (2.01)
 Saline group 15 2.03 (2.76) 3.5a (3.32) 3.4 (2.95) 3.4 (3.07) 2.40 (1.88) 1.1 (1.45)
 Lignocaine group 20 0.92 (2.38) 1.58 (1.99) 1.59a (1.85) 1.27 (1.96) 0.83 (1.86) 0.31 (0.74)
 Bupivacaine group 15 0.66 (1.23) 1.64 (2.17) 1.86a (2.58) 1.3 (1.27) 1.37 (1.74) 0.54 (0.99)
Ghezzi21
 Total 76 VAS Mean (SD)Median (range)
 LH group 38 0.8a (1.9)
0 (0–7)
0.5 (1.7)
0 (0–7)
0.7 (1.8)
0 (0–7)
0.6 (1.9)
0 (0–10)
 MLH group 38 1.0a (1.9)
0 (0–7)
0.8 (2.1)
0 (0–5)
0.6 (1.1)
0 (0–3)
0.7 (1.5)
0 (0–6)
Asgari22
 Total 84 VAS Mean (SD) Prior to dischage
 Group 1 28 5.18 (3.66) 4.69 (3.01) 4.66 (3) 4.36 (3.11) 3.3 (2.18)
 Group 2 28 3.07 (3.4) 3.38 (3.16) 4.19 (3.13) 4.96a (3.09) 3.65 (2.69)
 Group 3 28 4.34 (3.58) 4.15 (3.04) 5.14a (3.02) 3.96 (2.59) 2.62 (1.82)
Tharanon23
 Total 45
 Control group 22 b
 Intervention group 23 b
Liu2
 Total 60 NRS
 Group 1 30 b
 Group 2 30 b b
Jong Bum Choi24 50 VAS b

Values are meant as median (SD) unless indicated otherwise.

LPP group: low pneumoperitoneum pressure group; SPP group: standard pneumoperitoneum pressure group. VAS: visual analogue scale; NRS: numerical rating scale.

aThe patient's shoulder pain reached its peak.

bUnable to determine the exact value from the original text.

Table 4.

Systematic Review of the Literature

Author Patients Representation of Data Intensity of Shoulder Pain after Laparoscopy (PLSP)
N Mean (SD) Arrival 2 h 4 h 6 h 8 h Discharge Day 0 Day 1 Day 2 Day 3
Korell25
 Total 89
 Cold gas 45 3.2 (2.6) 3.6a (2.4) 2.7 (2.1) 1.8 (1.9)
 Warm gas 44 3.2a (2.6) 2.5 (2.6) 1.7 (2.3) 1 (1.6)
Suginami26
 Total 40
 Group I 19 PM-b
 Group II 21 AM-b
Madsen27
 Total 99
 Group 8-deep 49 b
 Group 12-Mod 50 b
Goldberg28
 Total 51
 CO2 group 29 b
 Gasless group 22 b

aThe patient's shoulder pain reached its peak.

bUnable to determine the exact value from the original text.

DISCUSSION

Laparoscopic surgery has obvious advantages in the diagnosis and treatment of gynecological diseases. Minimally invasiveness is one of the most important characteristics of laparoscopic surgery. Minimally invasive surgery does not mean only a small incision. The patients hope that after laparoscopic surgery, the pain will be relieved, the requirement of analgesia will be reduced, the length of hospital stay will be shortened, the recovery of activity will be early, and the incidence of complications will be reduced.1,29 Most of these advantages are achieved by reducing pain after surgery.

However, the pain after laparoscopic surgery has not been completely eliminated. Many patients may feel shoulder pain, which is more uncomfortable than abdominal incision and visceral pain, and is rarely seen in traditional laparotomy. Because most patients think shoulder pain has nothing to do with surgery, it makes them more anxious. This may lead to discomfort and poor quality of life after laparoscopic surgery, and greatly reduce patient satisfaction. Therefore, this will not be conducive to highlighting the advantages of laparoscopic surgery.

As far as we know, many interventions and comparative studies on reducing shoulder pain after gynecological laparoscopic surgery have been documented in the British literature so far. Our clinical observations and many previous studies have shown that the temporal characteristics of shoulder pain after gynecological laparoscopic surgery are significantly different from those of incision and visceral pain after surgery. Visceral and incision pain was more severe on the day after operation, and then gradually reduced. However, PLSP began to become serious in 12–24 hours (or the first day after operation). More importantly, most clinical studies have found that almost all interventions do not change the temporal characteristics of shoulder pain after laparoscopic gynecologic surgery.

Although the specific mechanism of PLSP is still controversial, most scholars believe that it is caused by the stimulation of the phrenic nerve by residual gas in the abdominal cavity after operation. In our hospital, all our patients began to get out of bed on the first day (12–24 hours) after surgery. Most of the patients began to have shoulder pain after getting out of bed for the first time. It may be that the location of gas accumulation in the abdominal cavity changes with body position, and then cause shoulder pain.

In addition, among all kinds of pain after laparoscopic surgery, shoulder pain has the least response to nonsteroidal anti-inflammatory drugs or opioid analgesics. Although morphine can control other types of pain, such as incision and visceral pain, it cannot effectively control PLSP. This may be related to the unreasonable timing of our medication.30,31 We should choose the administration scheme that matches the temporal characteristics of PLSP.

Clinical and Research Implications

The results show that shoulder pain after gynecological laparoscopic surgery has obvious temporal characteristics, which is significantly different from incision and visceral pain after laparoscopic surgery. Clinicians should be familiar with the time characteristics of its occurrence. To fully highlight the advantages of laparoscopic surgery, a multifactor approach may be needed to solve PLSP in future research. This method needs to fully consider the temporal characteristics of PLSP.

Footnotes

Disclosures: none.

Funding/Financial Support: none.

Conflicts of Interest: Dr. Kezhong Li declares no conflict of interest.

The manuscript did not include the use of the product for off-label use.

Informed consent: Dr. Kezhong Li declares that written informed consent was obtained from the patient/s for publication of this study/report and any accompanying images.

Contributor Information

Xinyou Li, Department of Anesthesiology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong.; Department of Anesthesiology, School of Medicine, Shandong University, Jinan, Shandong.

Kezhong Li, Department of Anesthesiology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong..

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