Multimodal Pain Management in Emergency Medicine: A Narrative Review

ABSTRACT

Pain is one of the most common reasons for presentation to the emergency department, yet it remains frequently undertreated despite effective therapies. Emergency physicians must provide timely analgesia while accounting for diagnostic uncertainty, patient heterogeneity, and safety concerns, particularly related to opioid use.

This narrative review synthesizes contemporary evidence on multimodal pain management in emergency medicine. A focused literature search of PubMed and Scopus was conducted to identify studies published between 2015 and 2025, as well as selected landmark studies and major clinical guidelines. Multimodal analgesia, combining pharmacological and non-pharmacological strategies targeting different pain pathways, is associated with improved pain control and reduced opioid use in emergency settings. Key elements include early pain assessment, timely initiation of therapy, opioid-sparing approaches, and use of non-opioid analgesics, low-dose ketamine, and regional anesthesia. Implementation remains inconsistent due to operational constraints such as overcrowding, workflow pressures, and variability in clinician experience.

A structured, patient-centered multimodal approach may improve pain control and support safer, more consistent analgesic care in emergency medicine.

INTRODUCTION

Pain represents one of the most common reasons for presentation to the emergency department (ED) worldwide and represents a fundamental component of emergency care^{1, 2}. Despite its high prevalence, pain management in the ED remains inconsistent and frequently suboptimal, reflecting a persistent gap between available evidence and clinical practice^{3, 4}.

The undertreatment of pain, commonly referred to as oligoanalgesia, is a multifactorial problem involving patient-, clinician-, and system-level factors^{1, 5}. Clinicians may delay analgesia because of concerns about masking diagnostic findings, particularly in conditions such as abdominal pain. However, current evidence suggests that early analgesia does not generally compromise diagnostic accuracy when accompanied by appropriate clinical reassessment and documentation^{6, 7}. System-level challenges—including ED overcrowding, high patient turnover, and workflow interruptions—further contribute to delays in pain management^{8, 9}. In addition, concerns regarding opioid-related harms and prescribing practices have influenced pain management strategies in many healthcare systems, although the epidemiology and clinical impact of opioid use vary substantially across countries and regions^{10, 11}.

Patient-related factors, including age, comorbidities, prior opioid exposure, and communication barriers, significantly influence pain perception and treatment response. Disparities related to demographic characteristics, including age, gender, and ethnicity, further highlight the complexity of achieving equitable and effective pain management^{12, 13}.

Multimodal analgesia has emerged as an effective and evidence-based approach to addressing these challenges. By combining pharmacological and non-pharmacological interventions targeting different mechanisms of pain processing, multimodal strategies enhance analgesic efficacy while reducing opioid requirements and associated risks^{14, 15}. Advances in analgesic pharmacology, increasing use of low-dose ketamine, and the expanding role of ultrasound-guided regional anesthesia have broadened the therapeutic options available to emergency physicians^{16, 17}.

Despite these advances, implementation remains inconsistent across EDs, largely due to variability in clinician experience, lack of standardized protocols, and limited training opportunities^{18, 19}.

Despite increasing interest in multimodal analgesia, there remains a need for a clinically oriented synthesis that integrates current evidence with practical decision-making in emergency settings. This narrative review aims to provide a clinically focused synthesis of multimodal pain management in emergency medicine, with particular emphasis on evidence-based strategies, practical applications, and real-world implementation challenges. This review aims to provide a clinically applicable, ED-oriented decision framework that integrates opioid-sparing multimodal analgesia, scenario-based analgesic selection, regional anesthesia considerations, and implementation challenges.

MATERIALS and METHODS

This study was designed as a narrative review aimed at providing a clinically focused synthesis of multimodal pain management strategies in emergency medicine.

A literature search was conducted using the PubMed and Scopus databases to identify relevant studies and clinical guidelines on acute pain management in ED settings. Search terms included combinations of “ED,” “acute pain,” “pain management,” “multimodal analgesia,” “ketamine,” “opioids,” “regional anesthesia,” and “opioid-sparing strategies.” The literature search was conducted from January to February 2025. The search strategy included combinations of the following keywords and Medical Subject Headings terms: “ED,” “acute pain,” “pain management,” “multimodal analgesia,” “opioids,” “ketamine,” “regional anesthesia,” “nerve block,” and “opioid-sparing analgesia.”

The review primarily focused on studies published between January 2015 and January 2025 to emphasize contemporary evidence and current emergency medicine practice. However, selected landmark studies and historically important references published before 2015 were also included when they were considered clinically or conceptually relevant.

Eligible sources included randomized controlled trials, observational studies, systematic reviews, meta-analyses, narrative reviews, and major international clinical practice guidelines. Guidelines and consensus statements from organizations such as the American College of Emergency Physicians, the National Institute for Health and Care Excellence, and the World Health Organization were specifically reviewed to ensure consistency with current standards of care^{18, 19, 20}.

Studies were selected based on their relevance to emergency medicine practice, clinical applicability, methodological quality, and contribution to multimodal pain management concepts. Articles not directly related to emergency care, non-English publications, conference abstracts without sufficient methodological detail, and studies with limited clinical applicability were generally excluded.

As this review was narrative and non-systematic, a formal PRISMA-guided screening process, a risk-of-bias assessment, and a quantitative meta-analysis were not performed. The aim of this approach was to provide a clinically practical and concept-oriented synthesis of the literature relevant to ED pain management.

Because this study was designed as a narrative review rather than a formal systematic review, the literature selection process was intentionally pragmatic and clinically oriented. PubMed and Scopus searches were conducted using combinations of the terms “ED,” “acute pain,” “pain management,” “multimodal analgesia,” “opioids,” “ketamine,” “regional anesthesia,” “nerve block,” and “opioid-sparing analgesia.” Search combinations were iteratively refined to identify clinically relevant studies, major guidelines, and landmark publications applicable to ED practice. A summary of the literature identification and selection process is presented in Figure 1.

Figure 1.

Simplified literature selection process for the narrative review.

Pain Physiology and Clinical Implications

Pain in the emergency setting is a complex and multidimensional experience involving nociceptive, neuropathic, and mixed mechanisms²¹. From a clinical perspective, understanding these mechanisms is critical, as different analgesic agents target distinct pathways and therefore influence treatment decisions.

Nociceptive pain arises from tissue injury and activation of peripheral nociceptors. It is the most common type encountered in the ED and typically associated with trauma, fractures, and inflammatory conditions. This type of pain is generally responsive to non-opioid analgesics such as non-steroidal anti-inflammatory drugs (NSAIDs) and paracetamol^{14, 22}.

Neuropathic pain, in contrast, results from injury or dysfunction of the nervous system and is often described as burning, shooting, or electric. It is less responsive to conventional analgesics and may require alternative strategies such as ketamine or adjuvant therapies^{4, 16}.

Mixed pain syndromes are frequently observed in emergency settings, particularly in severe trauma and oncological conditions. These cases require a multimodal approach because they involve multiple pain pathways²³.

Pain Assessment in the ED

Accurate and timely pain assessment is the foundation of effective pain management. The most commonly used tools in emergency practice include the numeric rating scale (NRS), visual analog scale, and Wong-Baker FACES Scale²⁴.

However, pain assessment in the ED is inherently challenging due to several factors:

Cognitive impairment, particularly in elderly patients

• Language and communication barriers

• Cultural differences in pain expression

• Time pressure and overcrowding

These challenges frequently lead to under-documentation and delayed analgesia^{5, 25}.

A key concept in modern emergency care is that pain assessment should be dynamic rather than static. Initial assessment must be followed by reassessment after intervention, allowing clinicians to titrate therapy based on response⁶.

Another important aspect is the integration of pain assessment into triage systems. Early identification of severe pain allows for timely initiation of analgesia, which has been shown to improve patient satisfaction and clinical outcomes⁸.

Pharmacological Strategies in Multimodal Analgesia

Pharmacological management represents the core component of multimodal pain control in the ED. The goal is not merely to relieve pain, but to do so rapidly, safely, and with minimal adverse effects, while maintaining diagnostic clarity.

a. Paracetamol (Acetaminophen)

Paracetamol is widely used as a first-line agent due to its favorable safety profile and broad applicability. It is effective in mild-to-moderate pain and serves as a key component of multimodal regimens²⁶.

Intravenous administration offers a faster onset of action and is particularly useful for patients who are unable to tolerate oral medications.

b. NSAIDs

NSAIDs are highly effective in inflammatory pain conditions such as renal colic, musculoskeletal injuries, and soft tissue trauma²².

They exert their effects through inhibition of cyclooxygenase enzymes, thereby reducing prostaglandin synthesis.

However, their use requires careful consideration in:

• Renal impairment

• Gastrointestinal bleeding risk

• Cardiovascular disease

Despite these limitations, NSAIDs remain a cornerstone of ED pain management and are frequently used in combination with paracetamol to enhance analgesic efficacy^{27, 28}.

Opioids

Opioids remain essential for the management of moderate-to-severe pain in the emergency setting.

Common agents and clinical considerations:

• Morphine: Typically administered intravenously in titrated doses (0.05-0.1 mg/kg), allowing for controlled analgesia and reassessment.

• Fentanyl’s rapid onset and shorter duration make it particularly useful in acute settings and for procedural analgesia.

The key principles of opioid use in the ED include:

• Titration rather than bolus dosing

• Frequent reassessment

• Monitoring for respiratory depression and sedation

While concerns regarding opioid misuse are valid, evidence suggests that appropriate, short-term use in the ED is safe and effective when guided by clinical judgment^{10, 11}.

Ketamine

Ketamine has emerged as one of the most important agents in modern multimodal analgesia.

Low-dose (sub-dissociative) ketamine:

• Dose: 0.1-0.3 mg/kg IV

Advantages:

• Rapid onset of analgesia

• Opioid-sparing effect

• Minimal respiratory depression

Ketamine is particularly valuable in:

• Trauma patients

• Opioid-tolerant individuals

• Patients with hypotension for whom opioids may be less desirable^{16, 29}.

Emerging evidence supports its use both as a primary analgesic and as an adjunct to opioids³⁰.

Methoxyflurane

Methoxyflurane is an inhaled analgesic that provides rapid and patient-controlled pain relief.

It is particularly useful in trauma settings and prehospital care, offering ease of administration without requiring intravenous access^{31, 32}.

However, the availability, regulatory approval, and routine clinical use of methoxyflurane vary substantially across countries and healthcare systems, and its use should therefore be interpreted within the context of local practice and institutional policies.

The comparative onset and duration profiles of commonly used ED analgesics are summarized in Table 1.

Table 1. Comparative characteristics of common analgesics used in the emergency department.

Analgesic	Typical ED dose	Approximate onset	Approximate duration	Key considerations
Paracetamol	1 g IV/PO	30-60 min	4-6 h	Hepatic dose limits
NSAIDs	Agent-specific	20-60 min	4-8 h	Renal/GI/cardiovascular risk
Morphine	0.05-0.1 mg/kg IV (titrated)	5-10 min	3-4 h	Respiratory/sedation monitoring
Fentanyl	0.5-1 mcg/kg IV	1-3 min	30-60 min	Rapid reassessment needed
Ketamine (low-dose)	0.1-0.3 mg/kg IV	1-5 min	30-60 min	Psychoperceptual effects
Methoxyflurane	Inhaled (where available)	5-10 min	20-30 min	Availability varies

NSAID: Non-steroidal anti-inflammatory drug, h: Hour, min: Minute

Multimodal Analgesia Strategies in Emergency Medicine

Multimodal analgesia represents the integration of multiple pharmacological and non-pharmacological interventions targeting different pain pathways. In emergency medicine, this approach is particularly valuable due to the need for rapid, effective, and safe pain control.

Rather than relying on a single agent, multimodal strategies combine drugs with complementary mechanisms of action, thereby enhancing analgesic efficacy while reducing dose-dependent adverse effects^{15, 33}.

Rationale for Multimodal Approaches

The physiological basis of multimodal analgesia lies in the complex nature of pain processing, which involves peripheral transduction, spinal transmission, and central perception²². Targeting only one pathway is often insufficient, particularly in moderate-to-severe pain.

For example:

● NSAIDs reduce peripheral inflammation

● Opioids modulate central pain perception

● Ketamine acts on N-methyl-D-aspartate (NMDA) receptors, reducing central sensitization

Combining these agents allows for synergistic effects and improved outcomes^{15, 30}.

Mild Pain

● Paracetamol + NSAID → Effective for musculoskeletal injuries and minor trauma²⁷.

Moderate Pain

● Paracetamol + NSAID + low-dose opioid → Provides balanced analgesia with reduced opioid exposure²⁸.

Severe Pain

● Opioid + ketamine ± regional anesthesia → Particularly effective in trauma and opioid-tolerant patients^{16, 29}.

Opioid-Sparing Strategies

● Ketamine + non-opioid analgesics → reduces opioid requirements while maintaining analgesic efficacy³⁰.

Common scenario-based multimodal analgesic combinations used in emergency practice are presented in Table 2.

Table 2. Common multimodal analgesic combinations in emergency practice.

Clinical scenario	Recommended combination	Rationale
Mild pain	Paracetamol + NSAID	Additive/synergistic analgesia
Moderate pain	Paracetamol + NSAID + opioid	Balanced analgesia
Severe trauma	Opioid + ketamine	Rapid, strong analgesia
Hip fracture	Regional block + paracetamol ± opioid	Opioid-sparing
Opioid-tolerant patient	Ketamine-based regimen	Avoids escalation
Hip fracture	Regional block + paracetamol ± opioid	Opioid-sparing

NSAID: Non-steroidal anti-inflammatory drug

Analgesic selection should be individualized based on patient age, comorbidities, renal function, pregnancy status, opioid tolerance, and local clinical expertise.

Timing and Sequencing

An important but often overlooked aspect of multimodal analgesia is timing.

● Early administration improves outcomes

● Sequential escalation allows safer titration

● Simultaneous initiation may be appropriate in severe pain

Delayed analgesia is associated with worse outcomes and decreased patient satisfaction⁸.

Regional Anesthesia in Emergency Medicine

Regional anesthesia has become an increasingly important component of multimodal pain management in emergency medicine. With the widespread adoption of point-of-care ultrasound (POCUS), emergency physicians can now perform targeted nerve blocks safely and effectively, often achieving superior analgesia compared with systemic medications^{17, 34}. Nevertheless, regional anesthesia techniques require careful consideration of contraindications and procedural precautions, including anticoagulation status, infection at the injection site, risk of compartment syndrome, operator competency, local anesthetic allergy, potential nerve injury, and the risk of local anesthetic systemic toxicity.

Clinical Advantages

Regional anesthesia offers several key benefits:

● Superior analgesic efficacy compared to systemic opioids

● Opioid-sparing effect, reducing the risk of respiratory depression

● Improved functional outcomes, particularly in orthopedic injuries

● Reduced delirium risk, especially in elderly patients

These advantages make regional techniques particularly valuable in high-risk populations³⁵.

Femoral Nerve Block

Widely used in femoral fractures and hip injuries. Provides rapid and effective analgesia.

Fascia Iliaca Block

A safer and technically simpler alternative, especially suitable for ED settings. Demonstrates significant opioid-sparing effects in hip fracture patients³⁶.

Upper Extremity Blocks

Used in shoulder dislocations and forearm injuries.

Implementation Challenges

Despite strong evidence, regional anesthesia remains underutilized in many EDs due to:

● Limited training opportunities

● Time constraints

● Lack of standardized protocols

Addressing these barriers requires structured education and institutional support¹⁸.

Clinical Scenarios and Practical Applications

A key strength of multimodal analgesia lies in its adaptability to specific clinical scenarios. Emergency physicians must tailor analgesic strategies based on the underlying condition, patient characteristics, and clinical context.

Trauma Pain

Trauma patients often present with severe pain requiring rapid intervention.

Recommended Approach

● Opioid (titrated) + ketamine

● Early consideration of regional anesthesia

Ketamine is particularly advantageous due to its hemodynamic stability and opioid-sparing effect¹⁶.

However, treatment selection should remain individualized, taking into account hemodynamic status, associated injuries, contraindications, and clinician experience.

Renal Colic

Renal colic is a classic example of inflammatory pain.

First-line Treatment

● NSAIDs

These agents reduce prostaglandin-mediated ureteral spasm and are often more effective than opioids in this context²². NSAID use should be carefully considered in patients with renal impairment, at risk of gastrointestinal bleeding, receiving anticoagulants, or who are pregnant.

Headache

Opioids should generally be avoided in primary headache disorders such as migraine because of the risk of medication-overuse headache and poorer long-term outcomes, although the individual clinical context and the secondary headache etiologies should also be considered.

Preferred Strategy

● NSAIDs

● Antiemetics

● Adjunctive therapies

Evidence suggests that non-opioid regimens are more effective and associated with fewer adverse outcomes³⁷.

Abdominal Pain

Historically, analgesia was delayed due to diagnostic concerns. However, current evidence suggests that early analgesia does not generally compromise diagnostic accuracy when accompanied by appropriate clinical reassessment and documentation^{6, 7}.

Hip Fracture in Elderly Patients

This represents a high-risk population.

Optimal Strategy

● Fascia iliaca block + paracetamol ± opioid

This approach reduces delirium and improves outcomes^{35, 36}. Regional anesthesia should be performed with attention to anticoagulation status, local infection risk, cognitive status, and institutional expertise.

Scenario-based analgesic strategies for common emergency presentations are summarized in Table 3.

Table 3. Scenario-based multimodal analgesia in the emergency department.

Clinical scenario	Preferred strategy	Key considerations
Trauma	Opioid + ketamine ± block	Rapid, severe pain
Renal colic	NSAID ± opioid	Inflammatory mechanism
Headache	Non-opioid regimen	Avoid opioids
Abdominal pain	Early multimodal analgesia	No diagnostic delay
Hip fracture	Regional block + multimodal	Elderly, high risk

Recommended strategies should be interpreted within the context of patient-specific contraindications, hemodynamic status, medication history, and institutional resources.

NSAID: Non-steroidal anti-inflammatory drug.

Risk Management and Patient Safety

Effective pain management must balance analgesic efficacy with patient safety.

Opioid-Related Risks

● Respiratory depression

● Sedation

● Hypotension

Risk is increased in elderly patients and those with comorbidities⁵.

NSAID-Related Risks

● Renal impairment

● Gastrointestinal bleeding

● Cardiovascular events

Careful patient selection is essential²².

Ketamine-Related Effects

● Psychomimetic reactions

● Emergence phenomena

These are typically dose-dependent and less common with low-dose regimens²⁹.

High-Risk Populations

Special caution is required in:

● Elderly patients

● Pregnant individuals

● Patients with chronic disease

Dose adjustments and close monitoring are critical.

High-risk populations require individualized analgesic strategies in emergency settings. Elderly patients are particularly vulnerable to opioid-related sedation, delirium, and respiratory depression, whereas patients with renal impairment may be at increased risk of NSAID-associated nephrotoxicity. Anticoagulated patients require careful assessment before regional anesthesia because of the increased risk of bleeding. In pregnant patients, analgesic selection should balance maternal pain control with fetal safety considerations. Opioid-tolerant individuals and patients with substance use disorder may require alternative or opioid-sparing approaches, including ketamine-based multimodal strategies and careful reassessment.

DISCUSSION

Multimodal pain management represents a significant evolution in emergency medicine, shifting the focus from single-agent therapy to integrated, mechanism-based strategies. The available literature consistently demonstrates that multimodal approaches provide superior analgesic efficacy while reducing opioid requirements and associated adverse effects^{15, 38}. In the ED, where rapid pain control must be achieved without compromising diagnostic accuracy or patient safety, this approach offers clear and practical clinical advantages.

The strength and direct applicability of evidence supporting multimodal analgesia vary across clinical settings. Strong evidence exists for opioid-sparing multimodal strategies in postoperative care, trauma management, geriatric hip fracture, and selected ED populations^{15, 29, 35}. However, in several emergency medicine scenarios, including headache management, renal colic, and mixed-pain presentations, some recommendations are partially extrapolated from perioperative or other non-ED literature. This highlights the ongoing need for ED–specific prospective studies evaluating multimodal analgesic strategies across diverse patient populations and clinical contexts.

Despite this strong evidence base, a substantial gap persists between recommended practices and real-world implementation. Multimodal strategies remain inconsistently applied across EDs, not due to a lack of evidence, but primarily because of system-level and operational barriers. Overcrowding, time constraints, and workflow interruptions frequently delay analgesia, while variability in clinician experience and limited training in advanced techniques—particularly regional anesthesia—further contribute to ongoing oligoanalgesia^{8, 39}. This gap represents a critical and modifiable target for quality improvement in emergency care.

Key Barriers

● ED overcrowding and time constraints

● Lack of standardized protocols

● Limited training in regional anesthesia

● Variability in clinician experience

These factors contribute to delayed treatment, inconsistent pain control, and persistent oligoanalgesia in ED settings^{8, 39}. Importantly, most of these barriers are potentially modifiable, emphasizing the need for system-level interventions.

Protocol-Driven Care

Standardized pain management pathways reduce variability in practice and improve patient outcomes¹⁸.

Early Analgesia

(Triage-Based): Initiating analgesia at triage is a practical, evidence-based strategy to minimize delays and improve patient satisfaction.

Education and Training

Structured training programs enhance clinician confidence and facilitate the adoption of multimodal and advanced analgesic techniques, including regional anesthesia.

Opioid Stewardship

Opioid stewardship should be implemented as a balanced, patient-centered strategy that minimizes unnecessary exposure while ensuring adequate pain control, rather than as a restrictive approach^{40, 41}.

Future Directions

● Expansion of ultrasound-guided regional anesthesia

● Increased use of opioid-sparing protocols

● Integration of clinical decision-support systems

These developments are expected to improve the consistency, safety, and effectiveness of pain management in ED settings and help bridge the persistent gap between evidence and clinical practice.

Advanced Clinical Decision-Making Framework in ED Pain Management

Effective pain management in the ED requires a structured, patient-centered approach that integrates clinical context, pharmacology, and risk assessment.

A practical decision-making model in ED pain management includes three key dimensions: pain characteristics, patient factors, and clinical context. Pain characteristics include severity, type (nociceptive, neuropathic, or mixed), and onset. Patient factors encompass age, comorbidities, opioid tolerance, and hemodynamic status. Clinical context includes diagnostic uncertainty, the need for procedural intervention, and resource availability.

Stepwise Multimodal Decision Approach

A stepwise multimodal approach can support clinical decision-making in ED pain management. Initial pain stratification using tools such as the NRS allows classification of pain severity and guides treatment intensity²⁴. Early initiation of multimodal therapy, particularly in moderate-to-severe pain, may improve analgesia while reducing opioid requirements^{15, 30}. Pain should be reassessed within 15-30 minutes to guide treatment escalation or de-escalation, as failure to reassess remains a key contributor to oligoanalgesia⁶. A practical stepwise framework for ED pain management is outlined in Table 4.

Table 4. Clinical decision framework for ED pain management.

Step	Clinical action	Key principle
1	Pain scoring (NRS)	Rapid stratification
2	Early multimodal therapy	Avoid monotherapy
3	Reassessment (15-30 min)	Dynamic management
4	Escalation or adjustment	Patient-specific
5	Consider regional techniques	Opioid-sparing

Treatment escalation and reassessment should be guided by analgesic response, adverse effects, and patient-specific risk factors.

NRS: Numeric rating scale

Opioid vs Ketamine: A Critical Comparative Analysis

One of the most important paradigm shifts in emergency pain management is the increasing role of ketamine as an alternative or adjunct to opioids.

Mechanistic Differences

● Opioids: μ-receptor agonism → central pain modulation

● Ketamine: NMDA receptor antagonism → reduces central sensitization

This distinction is clinically important, particularly in severe and chronic pain states¹⁶.

Clinical Performance

Opioids are potent analgesics and familiar to clinicians, but they carry a risk of respiratory depression and hypotension.

Ketamine preserves airway reflexes, provides hemodynamic stability, and has opioid-sparing effects, although it may cause psychomimetic adverse effects.

Evidence-Based Comparison

Studies have shown that low-dose ketamine provides analgesia comparable to opioids in acute pain, with a lower risk of respiratory compromise^{29, 30}.

Additionally, ketamine is particularly advantageous in:

● Trauma patients

● Hypotensive patients

● Opioid-tolerant individuals

Table 5 compares key clinical differences between opioids and ketamine in ED pain management.

Table 5. Opioid vs. ketamine in ED pain management.

Feature	Opioids	Ketamine
Mechanism	μ-receptor agonist	NMDA antagonist
Respiratory depression	Yes	Minimal
Hemodynamic stability	Variable	Stable
Opioid tolerance	Reduced efficacy	Effective
Typical ED role	Traditional	Increasing

The choice between opioids and ketamine should be individualized according to the clinical context, respiratory risk, hemodynamic status, opioid tolerance, and contraindications.

NMDA: Ketamine acts on N-methyl-D-aspartate

Implementation and Future Perspectives

Despite growing evidence supporting multimodal analgesia, implementation in routine ED practice remains inconsistent. Practical implementation strategies may include standardized multimodal analgesia protocols, triage-based analgesia pathways, nurse-initiated analgesia models, audit-feedback systems, structured ultrasound-guided regional anesthesia training programs, and opioid stewardship initiatives aimed at reducing variability in care and improving patient outcomes. Future developments are likely to include broader adoption of opioid-sparing protocols, ultrasound-guided interventions, personalized analgesic approaches, and digital clinical decision-support systems. Further ED-specific implementation research is needed to optimize integration of multimodal analgesia into routine emergency care.

Study Limitations

This study has several limitations. As a narrative review, it does not follow a formal systematic methodology and may therefore be subject to selection bias. Second, the heterogeneity of included studies limits direct comparison of findings and precludes definitive conclusions. Third, although major guidelines and high-quality studies were incorporated, some relevant evidence may not have been included. Finally, as this review focuses on clinical applicability in emergency settings, variations in local practice and resource availability may affect the generalizability of the findings.

CONCLUSION

Multimodal pain management represents a clinically effective and practical strategy for improving pain control in EDs. By targeting multiple pain pathways simultaneously, this approach enhances analgesic efficacy while reducing opioid exposure and associated adverse effects. Despite strong evidence, implementation remains inconsistent and largely limited by modifiable system-level barriers, including overcrowding, workflow constraints, and variability in clinician training. Addressing these challenges through protocol-driven care, early initiation of analgesia, and structured education may help improve the quality and consistency of pain management. Integrating a structured, patient-centered, and multimodal approach into routine emergency care may help bridge the gap between evidence and practice and support more consistent, high-quality pain management across diverse emergency settings.