- Research article
- Open Access
Comparative study between Levobupivacaine and Bupivacaine for hernia surgery in the elderly
© Compagna et al; licensee BioMed Central Ltd. 2012
Published: 15 November 2012
The inguinal hernia is one of the most common diseases in the elderly. Treatment of this type of pathology is exclusively surgical and relies almost always on the use of local anesthesia. While in the past hernia surgery was carried out mainly by general anesthesia, in recent years there has been growing emphasis on the role of local anesthesia.
The aim of our study was to compare intra-and postoperative analgesia obtained by the use of levobupivacaine compared with that of bupivacaine. Bupivacaine is one of the main local anesthetics used in the intervention of inguinal hernioplasty. Levobupivacaine is an enantiomer of racemic bupivacaine with less cardiotoxicity and neurotoxicity. The study was conducted from April 2010 to May 2012. We collected data of forty male patients, aged between 73 and 85 years, who underwent inguinal hernioplasty with local anesthesia for the first time.
Minimal pain is the same in both groups. Mild pain was more frequent in the group who used bupivacaine, moderate pain was slightly more frequent in the group who used levobupivacaine, and the same for intense pain. It is therefore evident how Bupivacaine is slightly less preferred after four and twenty four hours, while the two drugs seem to have the same effect at a distance of twelve and forty-eight hours. Bupivacaine shows a significantly higher number of complications, as already demonstrated by previous studies. The request for an analgesic was slightly higher in patients receiving levobupivacaine.
After considering all these elements, we can conclude that the clinical efficacy of levobupivacaine and racemic bupivacaine are essentially similar, when used under local intervention of inguinal hernioplasty.
The inguinal hernia is one of the most common diseases in the elderly. The Italian National Health System is geared to recognize the role of local anesthesia for the surgical treatment of inguinal hernia. Treatment of this type of pathology is exclusively surgical and relies almost always on the contribution of local anesthesia. While in the past, hernia surgery was carried out mainly by general anesthesia, in recent years there has been growing emphasis on the role of local anesthesia. This type of anesthesia has significantly improved the treatment of inguinal hernia, significantly reducing recurrences, complications, recovery time and return to normal working activities.
Hernia surgery should be approached according to a technique as simple and safe as possible that is at the same time accepted by the patient and easily realizable by the surgeon . Inguinal hernioplasty is now the most performed surgery in the departments of general surgery . For this reason it is necessary to find solutions which can be adapted to each individual case, combining experience and innovation. Surgery can be customized according to physique, age, comorbidity, lifestyle and size of the hernia. We are talking more and more about Tailored Surgery, the so-called personalized surgery, individualized, built on the needs and characteristics of the patient . The concept of Tailored Surgery encompasses not only technical-surgical and prosthetic choices but also anesthetic (assisted local, spinal or loco-regional, general). According to recent guidelines of the European Hernia Society, published in “Hernia” in 2009, the repair of a hernia in primary election can always take advantage of local anesthesia. This is a grade A recommendation, with high scientific impact . The simultaneous use of local anesthetic drugs with a long duration of action, but very powerful such as Levobupivacaine (Chirocaine), in addition to drugs equally potent, but duration of immediate action, such as Mepivacaine (Carbocaine), allow optimization of anesthesia / analgesia both intra-and post-operatively. Finally, do not forget that we are talking about local assisted anesthesia and therefore the contribution of the anesthetist, and the overall effectiveness of the anesthesia, are essential to ensure the maximum comfort to the patient intraoperatively . Why does the surgeon have to practice this kind of anesthesia? Because this type of anesthesia consists of several phases: the first, percutaneous, may be made without distinction by the surgeon or anesthesiologist, while the last phase, incisional, is exclusively of surgical pertinence, as it is the task of the surgeon to identify the points of landmarks, locate and infiltrate properly. Local Assisted Anesthesia by truncal block / incisional has several advantages: safety, even in patients at risk; effectiveness, commitment to anesthetic proportionate intervention, minimally invasive anesthetic technique, simple and reproducible. Currently local assisted anesthesia is the procedure of choice in primary unilateral inguinal hernias treated in election. There are no absolute contraindications to the anesthetic block. If anything, there are relative contraindications: poor patient, especially at a young age, morbid obesity, bilateral hernioplasty, bulky inguinal hernias .
The aim of this study was to compare two local anesthetics, levobupivacaine and bupivacaine, commonly used in the surgical treatment of inguinal hernia.
Fentanyl used (mcg)
115 +/- 25
119 +/- 33
Operating time (min)
Anaesthesia time (min)
Type of pain
Post-operative complications and patient satisfaction
Intake of analgesics in post-operative period
Time of first request of paracetamol (min)
Request of paracetamol in 24 hours (N.patients)
Need for other analgesics (N. patients)
In this study, continuous variables was reported as an average, more or less the standard deviation, and analyzed using ANOVA (analysis of variance). It is a parametric test that is used in statistics to compute the variance between two or more different groups. Analysis of variance is a set of statistical techniques that are part of the inferential statistics that allow us to compare two or more groups of data comparing the internal variability of these groups with the variability between groups. Categorical variables were reported as proportions instead and analyzed using chi-square test. Chi-square test is one of the tests used in statistics using the chi-square variable causal to verify if the null hypothesis is probabilistically compatible with the data. The values relating to the intra-operative pain and post-operative pain, as well as those relating to the taking of analgesics during the postoperative course, were always reported and analyzed through chi-square test. A P value less than 0.05 was considered statistically significant. Based on previous studies, the difference in the level of pain between the group of levobupivacaine and bupivacaine was 1.5.
International literature shows how local anesthesia is certainly more advantageous in terms of costs for the structure. While there are no particular differences between regional and general anesthesia, local anesthesia results seem to be better. A potential advantage of local anesthesia realized without any monitoring or additional drugs administered intravenously (the so-called local anesthesia not monitored) .
Levobupivacaine is a local anesthetic with long duration of action. It works by blocking nerve conduction of sensory and motor nerves, interacting predominantly with the voltage-gated sodium channels in the membrane of the cell, but also blocking potassium channels and calcium. Levobupivacaine also interferes with the transmission of the pulse and the conduction in other tissues where the effects on the central nervous system and cardiovascular system are the most important for the occurrence of clinical adverse reactions. Chirocaine is a compound based levobupivacaine hydrochloride. It is capable of producing a block on both the sympathetic system and on the parasympathetic system demonstrating hemodynamic changes significantly milder than Ropivacaine, which instead has the greatest influence on the sympathetic system with respect to that parasympathetic . The dose of levobupivacaine is expressed as a basis, unlike the racemic Bupivacaine where the dose is expressed as a hydrochloride salt. This roughly translates into a 13% more active ingredient in the solutions of levobupivacaine compared to those of bupivacaine. As regards to the pharmacokinetic properties, in human trials, the kinetics of distribution of levobupivacaine after intravenous administration are essentially the same as bupivacaine. The plasma concentration of levobupivacaine following therapeutic administration depends on the dose and, as absorption from the site of administration is influenced by the vascularity of the tissue, the route of administration. It is available in two formulations: Vial of 10 ml polypropylene, in pack sizes of 5, 10 and 20 units, polipropilene vial of 10 ml in sterile blister packs of 5, 10 and 20 units. Chirocaine can be worked in a very large number of surgical procedures, can be administered in major surgery for epidural, intrathecal, in nerve conduction block device, in minor surgery for local infiltration and for ophthalmic use in order to obtain a peribulbar block. It could be used in the treatment of pain, as an analgesic in the course of delivery, both for bolus infusion, and also for the post-operative pain. Among the uses of Chirocaine there are scientifically proven mastopexy interventions . Levobupivacaine is more effective to obtain analgesia with local infiltration compared to Ropivacaine, providing analgesia for postoperative period. Interventions of septoplasty and rhinoseptoplasty with an infiltration of levobupivacaine at 0.25% in the nasal region improve the post-operative analgesia and reduce the demand for additional analgesia during the twenty-four hours following nasal surgery. The post-operative analgesia achieved through the local infiltration of levobupivacaine has been demonstrated to be significantly more powerful and showed longer duration compared to the association lidocaine plus epinephrine. The same holds with regard to the interventions of mini-abdominoplasty . In this case levobupivacaine has proved to be more effective and with a duration indeed higher than ropivacaine. Levobupivacaine can be the agent of first choice in the thoracic epidural block  , compared to the use of a Ropivacaine dose equivalent. It has also proved effective even in the interventions of arthroscopy and Carotid Endarterectomy .
Especially in recent years local anesthesia allows the surgeon to monitor patients and to have simultaneously shorter hospitalization times and lower costs for the structure. Local anesthesia applied during endarterectomy surgery allows the surgeon to assess the levels of cerebral perfusion in an awake patient, giving a better chance of cerebral protection during arterial clamping. All these elements indicate that such interventions performed under local anesthesia with levobupivacaine compounds offer greater chances of success with significantly reduced rates of morbidity and mortality [12–14].
Locally hernioplasty has proved to be the method with the minor impact on the functioning of organs and systems, as it appears to be safe, effective, with a low incidence of side effects, enabling a rapid mobilization of the patient and significantly reducing the time of hospitalization, in less than twenty-four hours .
Among rare complications of surgery, hernioplasty under local anesthesia include: cardiovascular instability, nausea, vomiting, urinary retention, scrotal hematoma, edema, infection, orchitis, testicular atrophy and recurrences. Normally this type of surgery shows a lower incidence of complications than the same operation performed with general anesthesia. Compared with other types of anesthesia, post-operative complications of the respiratory and circulatory systems are significantly reduced .
The use of local anesthesia also allows the patient to be awake, aware, and thus able to collaborate actively conducting a stress-test by performing the Valsalva maneuver or a cough, which allows the surgeon to evaluate intra-operatively the presence of defects, latent trusses and sealing of the repair of plastic, reducing significantly the proportion of surgical failures [17, 18].
The anesthetic block consists of four phases: The first phase, percutaneous, provides the block troncular selective ilioinguinal nerves and iliohypogastric. The second phase, percutaneous, blocks the genital branch of the genitofemoral nerve, through a puncture performed below the inguinal ligament, lateral to the pubic tubercle. The third phase, percutaneous, provides for the infiltration of the surgical incision using a 22 gauge spinal needle. The anesthetic block is completed in the incisional phase by means of an open infiltration performed in each anatomical floor during the course of surgery . Local anesthesia with levobupivacaine and bupivacaine is now a established and safe procedure with risks considerably reduced, a quick and full recovery of the patient's general condition and an immediate return to normal working activities. Data from the international literature indicate how the levobupivacaine is less toxic compared to bupivacaine, both at the cardiac level and at the neurological level [20, 21].
The purpose of this study was to compare the perception of pain intra and post-operative, found as a result of intervention with the Levobupivacaine, compared to that recorded after the same intervention carried out with the racemic bupivacaine. We used the same dose for both anesthetics. The forty patients we studied, were randomly distributed in two groups, and were classified on the basis of a number of variables: age, weight, sex, type of hernia, ASA Stadium and location of the hernia. The first point on which we focused was intra-operative pain. In the group of patients treated with levobupivacaine, 10 % reported minimal pain, 55% mild pain, 30% moderate pain, 5% severe pain. In the group of patients treated with bupivacaine, 10% identified minimal pain, 65% mild pain, 25% moderate pain and no one intense pain. Therefore, we can say that minimal pain is the same in both groups. Mild pain was more frequent in the bupivacaine group, moderate pain slightly more frequent in the Levobupivacaine group and the same for intense pain. The second point on which we focused was post-operative pain, assessed in three positions within 48 hours. In the first group, 10% of patients reported pain in the supine position, 15% in the sitting position and 10% standing up. In the second group, 10 % reported pain in the supine position, 15% in the sitting position and 15% standing up. Therefore the data show the same results for the first two positions and a slight preference for levobupivacaine in the upright position. With regard to the assessment of pain during the forty-eight hours, we evaluated the impressions of the patient's at four time intervals: four, twelve, twenty-four and forty-eight hours. In the levobupivacaine group, 15% of patients expressed pain relief after four hours, 10% after 24 hours, 5% after 48 hours. In the bupivacaine group, 10% of patients experienced pain after four and twelve hours, 5% after twenty-four and forty-eight hours. It is therefore evident how Bupivacaine is preferred slightly after four and twenty four hours, while the two drugs appear to be equivalent at a distance of twelve and forty-eight hours. The third point we considered werethe postoperative complications and overall patient satisfaction. In the Levobupivacaine group, 20% experienced symptoms such as nausea and / or vomiting, 5% itching, no one with an infection. In the bupivacaine group, 25% noted nausea and / or vomiting, 5% itching, 5% infection. Bupivacaine shows a significantly higher number of complications, as already demonstrated by previous studies. The overall satisfaction towards the intervention was high in 65% of patients receiving levobupivacaine, moderate in 30% and sufficient in 5%. Instead patients who received bupivacaine expressed 65% complete satisfaction and 35% satisfaction moderate. In neither of the two groups were found signs of toxicity by local anesthetic, such as tinnitus, pallor circumorale, cardiovascular or neurological manifestations. Finally, the last point on which we have focused our work has been the application of analgesic in post-operative period. Seventy percent of patients who received levobupivacaine required at least an analgesic (paracetamol) within twenty-four hours surgery and 30% required others analgesics. In the bupivacaine group, 60% took some paracetamol after twenty-four hours, 25% required other analgesics. The request for ananalgesic was slightly higher in patients receiving levobupivacaine.
After considering all these factors, we can conclude that the clinical efficacy of levobupivacaine and racemic bupivacaine are essentially similar. When we perform inguinal hernioplasty surgery with local anaesthesia, Levobupivacaine could be preferred because it has a lower cardiac and neurological toxicity compared to bupivacaine, as previously demonstrated by other clinical studies.
This article has been published as part of BMC Surgery Volume 12 Supplement 1, 2012: Selected articles from the XXV National Congress of the Italian Society of Geriatric Surgery. The full contents of the supplement are available online at http://www.biomedcentral.com/bmcsurg/supplements/12/S1.
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