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Review Article - (2022) Volume 0, Issue 0

Management of Post-Operative Pharyngeal Pain: Use of Ketamine and Other Agents

 
1Family Physician, Universidad de la Sabana, Colombia
2General Physician, Universidad de Antioquia, Colombia
3General Physician, Universidad Pontificia Bolivariana, Colombia
4General Physician, Universidad CES, Colombia
5General Physician, Universidad Autónoma de Bucaramanga, Colombia
6General Physician, Fundacion Universitaria Autonoma de las Americas, Colombia
7General Physician, Fundación Universitaria Sanitas, Colombia
Intern Physician, Universidad Autonoma de Bucaramanga, Colombia
 
*Correspondence: Milton Damian Moreno Calderon, Family Physician, Universidad de la Sabana, Colombia, Email:

Received: 11-Mar-2022, Manuscript No. iphsj-22-12657; Editor assigned: 13-Mar-2022, Pre QC No. PreQC No. iphsj-22-12657 (PQ); Reviewed: 27-Mar-2022, QC No. QC No. iphsj-22-12657; Revised: 01-Apr-2022, Manuscript No. iphsj-22-12657(R); Published: 09-Apr-2022, DOI: 10.36648/1791-809X.16.S6.922

Abstract

Postoperative pharyngeal pain is considered within the list of ten most frequent complications in anaesthesia. Its wide frequency and associated with the intervention of the airway for surgical procedures, specifically under general anaesthesia makes the study of this complication mandatory to improve the quality of care and patient satisfaction. Multiple postoperative interventions have been studied to reduce pharyngeal pain, but it seems that the best intervention comes from prevention. Multiple pharmacological and non-pharmacological measures must be taken into account for this complication. Ketamine, as an antagonist of the N-methyl-D-aspartate receptor, due to its ant nociceptive, anti-inflammatory and bronchodilator effect, has been one of the drugs of choice for the studies. Others such as corticosteroids and NSAIDs are also part of the group. Knowing about this pathology will help improve patient care and avoid extra costs at the time of care

Keywords

Postoperative sore throat, Ketamine, Lidocaine, Steroids

Keywords

Postoperative sore throat, Ketamine, Lidocaine, Steroids

Introduction

Performing surgical interventions under general anaesthesia implies a great responsibility towards the patient. Among the complications that we must keep in mind and that decrease satisfaction and quality of care, especially if we consider elective interventions, is postoperative pharyngeal pain. Subjectively, it presents as odynophagia and although its time of occurrence is self-limited, it can become very annoying in the person who suffers from it. Pharmacological and non-pharmacological interventions will help manage these patients. In this review we will analyse the most up-to-date evidence on the pharmacological measures that can be considered according to expertise and preference for the management of postoperative pharyngeal pain.

Methodology

A systematic bibliographic search of the updated medical literature on the importance of malnutrition in the psychomotor development of children was carried out, using databases such as: PubMed, Science direct and Google Scholar. Descriptors such as postoperative pharyngeal pain, ketamine, lidocaine, anaesthetics were used. Both review and original articles were used, taking into account that their year of publication was less than 5 years.

Result

Performing multiple surgical procedures requires securing the airway through endotracheal intubation to be carried out. This can lead to a series of complications in the respiratory tract, among which postoperative pharyngeal pain (PPD) stands out [1-4]. PFD is subjectively described as the sensation of discomfort or pain that occurs in the posterior pharynx after the endotracheal intubation process. It is caused by a direct mechanical injury occurring in the given procedure due to inflammation and edema of the mucosa, excessive muscular contraction and pressure generated from the cuff of the endotracheal tube, placement time and concomitant mucosal dehydration [5-7].

The frequency of appearance varies in the current literature from 20 to 70% and has a high morbidity that per se increases costs, length of hospital stay and risks associated with medical care. It is considered a self-limited process of up to 96 hours, although there have been cases of longer duration and factors such as the size and pressure of the endotracheal tube cuff, suction attempts, time and manipulations necessary to insert the tube, female sex, young and the administration of succinylcholine can predict the presence of PFD [8-12].

There are different types of therapy for the management of PFD that can be classified into non-pharmacological and pharmacological methods. For the former, the size of the tube, lubrication of the tube at the time of placement, use of humidifiers in the circuit, gentle laryngoscopy, gentle aspiration, management of cuff pressure (less than 25 cmH2O), avoidance of changes in the position of the head and gentle extubation [13].

Within pharmacological therapies, multiple medications with analgesic and anti-inflammatory effects have been described. Among them, nebulization therapy with small volumes of drugs has been shown to improve patient compliance and reduce adverse events compared to other methods (gargles, intravenous, etc.). Among the most used in aerosol presentation are corticosteroids, ketamine, magnesium and non-steroidal anti-inflammatory drugs [14-17].

Inhaled/aerosol corticosteroids: used for the management of asthma and as prophylaxis for PFD by reducing inflammation, edema, fluid transudation and pain intensity. They can prevent PFD, cough, hoarseness, and reduce postoperative laryngeal edema and reintubation [18].

N-methyl-D-aspartate (NMDA) receptor antagonists – Ketamine and Magnesium: included for their ant nociceptive, anti-inflammatory and bronchodilator effect. The reduction in the incidence and severity of PFD is attributed to peripheral analgesia and the anti-inflammatory effect of nebulization [19]. Ketamine has been used for its described properties, in addition to avoiding adverse effects due to its local and nonsystemic effect. By means of nebulization’s, the bitter taste of the medicine is reduced to zero, the volume required is smaller and the patient's cooperation is improved [20-23].

Non-steroidal anti-inflammatory drugs (NSAIDs) Benzydamine Hydrochloride: it has analgesic and local anaesthetic action. Especially for or pharyngeal inflammation. The incidence and severity of PFD does not appear to be alleviated by oral spray and the significant reduction in PFD relative to placebo is only seen 24 hours after surgery [24]. (Table 1)

MANAGEMENT OF POST-OPERATIVE PHARYNGEAL PAIN
NON-PHARMACOLOGICAL MEASURES PHARMACOLOGICAL MEASURES
  • Choosing the appropriate ETT size.
  • Abundant lubrication during ETT placement.
  • Appropriate laryngoscopy technique.
  • Cuff pressure less than 25 cmH2O.
  • Gentle extubation.
corticosteroids method of choice
NMDA antagonists method of choice
NSAIDs method of choice
lidocaine Not supported by studies
Placebo Not supported by studies

Table 1. Description of the different pharmacological and non-pharmacological methods that can be used to manage postoperative pharyngeal pain.

Discussion

According to the reported incidence, PFD is one of the most undesirable and common results associated with procedures that require endotracheal intubation; it can occur in up to almost a third of patients and has been established as a marker of quality of care since it is among the 10 most uncomfortable conditions that represent patient dissatisfaction [25-27].

Yu, et al. in a systematic review and meta-analysis of approximately 32 randomized clinical trials, compared the efficacy of different available nebulized agents for the management of PFD in order to guide clinical decisions. The results included the incidence of PFD at 1 hour and 24 hours after the surgical procedure and the severity of PFD after one day of the operation. From the data it was obtained that, with the exception of nebulized lidocaine, nebulized corticosteroids, ketamine, magnesium and benzamine hydrochloride are effective in reducing PFD 24 hours after surgery compared to non-analgesics and additionally, the first three showed a significant effect in reducing early PFD and its severity. The authors conclude that the prophylactic use of nebulized drugs such as corticosteroids, magnesium and ketamine are effective in preventing PFD [28].

There may be some controversy about the true benefit of using NMDAs such as ketamine in the management of PFD patients. A prospective, randomized, double-blind, experimental study that included two groups of randomized patients to compare Ketamine VS placebo in decreasing PFD after elective surgery under general anaesthesia and analysing vital signs, symptoms and pain intensity at one hour the 4 hours of the procedure on a numerical scale concluded that the use of nebulized ketamine does not represent a statistically significant advantage [29].

However, another controlled, double-blind, prospective, randomized study conducted in India, with the participation of 100 patients between 20 and 60 years of age undergoing surgery under general anaesthesia, and with an incidence of PFD of 33%, showed that the management with ketamine nebulization significantly attenuates the incidence and severity of PFD, especially in the early postoperative period, without observable adverse effects [30].

All of the foregoing makes us take more into consideration drug dosage, type of population, exposure time, surgical intervention time, among other data that may be key determinants when using the drug for that purpose

Even though individual studies show the contrary, several current meta-analyses are gradually elucidating the benefit of the use of NDMA (Ketamine)-type drugs for the management of patients with PFD. Wang et al showed through their analysis that among the 6 topical medications they studied, lidocaine is not optimal for preventing PFD, but glycyrrhine, corticosteroids, NSAIDs, and NMDA antagonists, including ketamine, are associated with a reduction. Of the DFP in 4 the time intervals studied and that its choice will already depend on the clinical experience and preferences of the patient [25].

On the other hand, the literature also shows that there are various ways of administering the drug, and even though aerosol is the method of choice for both Ketamine and the rest of the drugs studied, there are studies that compare the impact of different dose of ketamine administered via gargle. Khairtabad, et al, through a single-blind randomized controlled trial, studied 96 patients selected for septoplasty surgery under general an aesthesia and performed 3 groups in which gargles with 50 and 100 mg of ketamine dissolved in saline solution were administered and the third saline alone for 30 seconds to 5 minutes prior to tracheal intubation. In their conclusion, they describe that the use of 100 mg of the drug exceeds 50 mg or only saline solution, without increasing complications or patient dissatisfaction for the management of PFD [22].

Conclusion

It is evident that postoperative pharyngeal pain is a complication that requires knowing how to treat. Currently there are controversial studies that do not support the use of certain agents such as ketamine, but systematic reviews and meta-analyses are gradually elucidating the importance of using them as the method of choice in this pathology, the appropriate dose, the form of administration and the right moment. Still, it is important to stress that prevention, rather than treatment is the best approach to improving quality of care and patient satisfaction in what is reported as the eighth worst clinical anaesthesia outcome.

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Citation: Citation: Calderon MDM, Machado VA, Marín RAJ, Ortiz CR, Diaz ITP, et al. (2022) Management of Post-Operative Pharyngeal Pain: Use of Ketamine and Other Agents. Health Sci J. Vol. 16 No. S6: 922.