The authors’ observations
Efforts to improve the laboratory diagnosis of inhalant abuse are ongoing, but they have not yet been widely implemented. Systemic screening and assessment of inhalant use can help prevent and treat complications. For Ms. G, we considered several possible complications, including hypoglycemia. Although the classic triad of myalgia, weakness, and myoglobinuria (tea-colored urine) was not present, elevated CK levels in the context of Ms. G’s intermittent myalgia and lower extremity weakness led us to suspect she was experiencing moderate rhabdomyolysis (Table 23).
Rhabdomyolysis can be caused by several factors, including drug abuse, trauma, neuromuscular syndrome, and immobility. Treatment is mainly supportive, with a focus on preserving the ABCs (airway, breathing, circulation) and renal function through vigorous rehydration.4 We postulated Ms. G’s rhabdomyolysis was caused by muscle damage directly resulting from inhalant abuse and compounded by her remaining in prolonged fixed position on the ground after overdosing on inhalants.
TREATMENT Rehydration and psychotropics
The treatment team initiates IV fluid hydration of chloride 0.9% 150 mL/h and monitors Ms. G until she is stable and the trajectory of her CK levels begins to decline. On hospital Day 2, Ms. G’s CK decreases to 2,475 U/L and her lactic acid levels normalize. Ms. G restarts her regimen of duloxetine 60 mg/d, trazodone 150 mg/d, ziprasidone 40 mg/d, carbamazepine 200 mg twice daily, gabapentin 400 mg 3 times daily, and propranolol 10 mg 3 times daily. The team adds quetiapine 25 mg as needed for hallucinations, paranoia, and/or anxiety. Ms. G is closely monitored due to the potential risk of toxicity-induced or withdrawal-induced psychotic symptoms.
The authors’ observations
Presently, there are no effective treatments for acute inhalant intoxication or withdrawal, which makes supportive care and vigilant monitoring the only options.5 Although clinical research has not led to any FDA-approved treatments for chronic inhalant use disorder, a multipronged biopsychosocial treatment approach is critical in light of the negative consequences of inhalant abuse, including poor academic performance, criminal behavior, abuse of other substances, social maladjustment, low self-esteem, and suicidality.6
Ms. G had a moderate form of rhabdomyolysis, which was managed with IV fluid rehydration. Education and counseling were crucial to help Ms. G understand the unintended complications and potentially life-threatening consequences of inhalant abuse, with rehabilitation services to encourage abstinence. Ms. G had previously undergone successful inpatient rehabilitation and was willing to start such services again. She reported success with gabapentin for her polyneuropathy and migraines, which may be long-term consequences of prolonged inhalant abuse with neurological lesions. Ziprasidone may have mitigated some of the impulsivity and hypomanic symptoms of her BD that could make her more likely to engage in risky self-harm behaviors.
Continue to: After extensive discussion...