Usmani SUR, Javed H, Sajid A, Shahzad M, Siddiqui A, Ziaulhaq A. Early Versus Late Extubation in Pediatric Cardiac Surgery: A Systematic Review. World Journal for Pediatric and Congenital Heart Surgery. 2026;17:666-671. doi:10.1177/21501351261418610.
PubMed: https://pubmed.ncbi.nlm.nih.gov/41761495/
Take-Home Points
- This systematic review included 22 studies and 8,359 pediatric cardiac surgical patients, making it one of the most comprehensive contemporary evaluations of extubation timing in congenital heart surgery.
- Early extubation (≤6 hours) and immediate extubation (in the operating room) were consistently associated with shorter ICU and hospital length of stay in many studies.
- Evidence regarding reintubation risk was mixed, with several studies demonstrating higher reintubation rates following early extubation while others found no difference.
- Most studies found no increase in mortality with early extubation, although interpretation is complicated by significant patient selection bias.
- Patients selected for early extubation were generally older, larger, underwent less complex procedures, and had shorter operative times than patients undergoing delayed extubation.
- Current evidence supports early extubation in carefully selected patients but does not establish a universal approach applicable to all forms of congenital heart surgery.
Commentary from Dr. Varun Aggarwal (Wilmington, DE, USA), editor-in-chief of Congenital Heart Disease Journal Watch:
Few aspects of postoperative management have changed congenital heart surgery practice as dramatically as the evolution toward fast-track recovery protocols. What was once considered aggressive practice has gradually become routine in many centers. Extubation that previously occurred hours or even days after surgery is now frequently performed within hours of arrival to the intensive care unit and, in selected patients, even before leaving the operating room. Yet despite widespread enthusiasm, an important question remains unresolved: does early extubation genuinely improve outcomes, or does it simply identify patients who were already destined to recover well?
This systematic review by Usmani and colleagues provides an important contemporary assessment of that question. Reviewing 22 studies involving more than 8,000 pediatric patients undergoing congenital heart surgery, the authors attempt to synthesize a highly heterogeneous body of literature evaluating immediate extubation, early extubation, and conventional delayed extubation strategies.
The rationale for early extubation is compelling. Mechanical ventilation is not without cost. Positive pressure ventilation alters preload and afterload, potentially impairing cardiovascular performance in patients with delicate postoperative physiology. Prolonged ventilation is also associated with ventilator-associated pneumonia, atelectasis, excessive sedation, longer ICU stays, and increased healthcare utilization. In contrast, spontaneous respiration restores more physiologic hemodynamics and may accelerate recovery. These concepts have made early extubation a cornerstone of expedited recovery after surgical repair.
The findings of this review generally support this philosophy, although with important caveats.
The most consistent result across the included studies was a reduction in resource utilization. Multiple investigations demonstrated shorter ICU stays and shorter overall hospitalizations among patients undergoing immediate or early extubation. While not universal, the overall direction of effect strongly favored early extubation. These findings are particularly relevant in the modern healthcare environment, where ICU capacity, staffing constraints, and cost containment remain ongoing challenges.
At first glance, the shorter hospitalizations might suggest that early extubation directly improves recovery. However, a closer examination reveals the limitations inherent in much of the available evidence. Across the reviewed studies, patients selected for early extubation tended to be older, larger, and lower risk. They often underwent less complex operations with shorter bypass and operative times. Consequently, early extubation may be functioning partly as a marker of favorable physiology rather than as an independent therapeutic intervention.
This issue of selection bias represents the central challenge in interpreting the literature. Clinicians do not extubate patients early at random. Rather, they choose early extubation because the patient appears stable enough to tolerate it. The favorable outcomes observed in many series therefore reflect a combination of patient selection and the intervention itself. Distinguishing between these effects remains difficult in the absence of large, randomized studies.
The reintubation data further illustrate this complexity. Several studies reported significantly increased reintubation rates following immediate or early extubation, whereas others identified no meaningful difference. Taken collectively, the evidence suggests that while early extubation is feasible and generally safe, it is not entirely without risk. Failed extubation carries important consequences, including additional airway trauma, prolonged ventilation, and potentially increased morbidity. Therefore, the goal should not be extubation at all costs but rather extubation at the appropriate time.
An especially important observation is that mortality differences were generally absent. Most studies demonstrated comparable survival regardless of extubation strategy. This finding reinforces an important principle: extubation timing should be viewed primarily as a quality and recovery metric rather than a major determinant of survival. Early extubation may improve efficiency and patient experience, but its impact on mortality appears limited.
The review also highlights how dramatically congenital heart surgery has evolved. Earlier eras often viewed prolonged mechanical ventilation as a necessary component of postoperative care. Improvements in anesthesia, myocardial protection, perfusion strategies, pain control, and intensive care management have transformed expectations. Today, extubation in the operating room following selected congenital procedures is increasingly routine at high-volume centers. This would have been considered extraordinary only a generation ago.
For Fontan and single-ventricle patients, the physiologic implications may be particularly relevant. Positive-pressure ventilation increases intrathoracic pressures and can reduce passive pulmonary blood flow, whereas spontaneous respiration often improves venous return and cardiac output. Consequently, many congenital intensivists view early extubation as especially desirable in cavopulmonary circulations whenever clinically feasible. Although this review was not focused specifically on Fontan physiology, its findings support the broader movement toward minimizing unnecessary ventilation in carefully selected patients.
The authors appropriately emphasize the absence of standardized definitions and protocols across studies. Immediate extubation, ultrafast track extubation, fast-track extubation, and early extubation were variably defined. Patient populations ranged from neonates with complex single-ventricle physiology to older children undergoing relatively straightforward procedures. Such heterogeneity limits the ability to generate definitive recommendations and underscores the need for prospective multicenter investigations.
Perhaps the most practical lesson from this review is that successful extubation strategies require an integrated perioperative system rather than a single intervention. Early extubation depends on surgical quality, anesthetic management, hemostasis, pain control, respiratory therapy, nursing experience, and intensive care expertise. It is not merely an endpoint but rather the product of a coordinated multidisciplinary process.
Ultimately, this review supports what many congenital heart programs have already concluded. Early extubation is achievable, safe, and often beneficial in appropriately selected patients. However, extubation timing should remain individualized. The optimal strategy is not always the earliest possible extubation but the safest extubation for a given patient’s anatomy, physiology, and postoperative condition.
Clinical Perspective
Early extubation after pediatric congenital heart surgery is associated with shorter ICU and hospital stays in appropriately selected patients and appears generally safe when implemented within structured perioperative recovery protocols. However, risks of reintubation remain variable, and patient selection remains critical. Future prospective studies are needed to identify which congenital heart populations derive the greatest benefit from fast-track extubation pathways.
