Compartment syndrome of the forearm in children is generally caused by fracture, but compartment syndrome caused by infusion or intravenous administration has been reported in a few cases.2 The term “infiltration” is defined as the accidental leakage of a non-necrotic agent into surrounding tissues, while extravasation is defined as the accidental leakage of a necrotic agent into surrounding tissues. 3 As fluid passes from the intravenous tubing into the narrow-gauge intravenous catheter, the rate of fluid movement increases exponentially. The high-velocity fluid exiting the tip of the catheter results in high pressure, damaging the venous wall and causing leakage of the drug into the perivascular area. 4 In addition, infiltration or extravasation of fluids or intravenous administration causes the surrounding tissue pressure to exceed the intracompartmental pressure. This increases venous pressure, which in turn further increases the intracompartmental pressure due to increased tissue pressure from the stasis of blood flow. 5
In the present study, we reported a child who presented with forearm compartment syndrome caused by infiltration or extravasation, and similar cases were reviewed in the academic article database PubMed and the Japanese article database I-Chu-Shi, under the headings of “infiltration and compartment syndrome” (Table1). The median age of the 10 previous cases was 6 months (4 months to 9 years). Nine of the 10 cases occurred at the forearm or dorsum of the hand; this high prevalence may be due to the fact that the dorsum of the hand is the most common insertion site for venous catheters in children.
The delay in detection of compartment syndrome due to infiltration or extravasation can be attributed to four factors: first, the use of pressurization devices may play a role. In adults, there have been scattered reports of forearm compartment syndrome due to intraoperative infusion of large volumes of fluid under pressure, 6, 7 but in the present case, there was no rapid intravenous administration or infusion of fluids, nor was any extravasation-prone drug administered. However, a pressurization device was used in four of the ten previous cases reviewed. Because children are often infused or intravenously administered agents under positive pressure with a pressurization device rather than spontaneous titration, infiltration or extravasation occurs, and infusion continues even when tissue pressure is elevated. 5 Second, glucose-acetate Ringer's solution is a hypertonic solution. Although glucose-acetate Ringer's solution is a commonly used preparation in infusion therapy, it has an osmotic pressure ratio of approximately 1.7% to 0.9% saline. As the osmotic ratio increases, the cytotoxicity increases; therefore, an osmotic ratio of 3 and a sugar concentration of 10%-12% are considered acceptable for administration through a peripheral vein. 8 Third, immobilization is necessary because children can easily dislodge the venous tract with body movement. Fourth, symptoms and physical examination findings are unreliable. The five “Ps” (paresthesia, pain, pallor, paralysis, and loss of pulse) are considered symptoms of compartment syndrome, but only pain is reliable, while paralysis and paresthesia are findings after progression, and pulsatility does not disappear unless the compartment pressure exceeds the arterial pressure. 9 Furthermore, all ten previous cases were infants, and it is difficult to infer pain or discomfort due to infiltration or extravasation from symptoms because infants are unable to express pain or discomfort well.9
In the present case, there were no findings suggesting pain, such as grumpiness, making the diagnosis of compartment syndrome difficult. If the clinical findings are inconclusive, intramuscular pressure measurement can also be useful.10 Although an invasive test, it can cause irreversible dysfunction if left untreated. Swelling at the site of peripheral venous tract puncture during infiltration should also be considered as a possible indicator of compartment syndrome, and if suspected, intramuscular pressure measurement should be considered after consultation with a specialist.
It should also be understood that although infiltration is a relatively common complication of infusion therapy,11 even commonly used infusion products can cause compartment syndrome, as in the present case. In order to prevent a situation such as the one described in the present case, prompt action is needed to (1) stop administration of intravenous fluids immediately; (2) disconnect the intravenous tubing from the device; (3) attempt aspiration of the residual drug from the IV device; (4) administer nursing interventions, as indicated; and (5) notify the physician or advanced practice nurse.3
One of the causes of infiltration or extravasation in children is the difficulty in observing the area around the puncture site due to immobilization of the joint, but transparent bandages and tapes have been developed,11 and if these are put into practical use, early detection of infiltration or extravasation will be possible. Although previous reports have described how to respond after extravascular leakage, there are few reports or statements that take into account the characteristics of fixation in children, and furthermore, there are no reports that suggest how to detect extravascular leakage immediately. Specific guidelines for the prevention and early detection of fluid leakage in infants are necessary. For example, we propose a new method of immobilizing peripheral venous catheters using a transparent bandage and tape to detect infiltration or extravasation at an early stage, or periodically checking for spontaneous dripping of the infusion tube even while using an infusion pump.