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A 39-year-old man was referred because of three attacks of severe myalgia accompanied by ‘bloody urine’. There were no complaints about muscle weakness. There had been preceding exercise, but not excessively. Prior to one attack, he had suffered from a viral infection.
During childhood, at sports he had often noticed having muscle ache, once accompanied by ‘red urine’. There was no ‘second wind’ phenomenon. After three days, the muscle complaints usually disappeared. At age 20 years he had suffered a similar attack during a soccer game and again at age 37 after playing volleyball. On that occasion, CK was determined and found to be approximately 800,000 IU/L, which led to admission to hospital for hydration and monitoring of his kidney function. His CK normalized rapidly. At that time, a muscle biopsy was performed that showed no accumulation of fat or glycogen and no mitochondrial abnormalities.
A 40-year-old woman was referred because she complained about cramping and swelling of the hands and leg muscles for more than four years. The referring neurologist also found hyperCKaemia (> 10 × ULN). The symptoms bothered her when using her computer or when she was performing squats. She had never produced dark urine and she had never noticed muscle weakness. Previous disease history was inconspicuous except for goiter. The family history was negative for neuromuscular disorders.
Many people who are rescued alive from rubble after earthquakes suffer from crush injuries and associated acute kidney injury (AKI). McMahon score is used to determine the risk of AKI and mortality due to rhabdomyolysis in hospitalized patients. In this study, we aimed to evaluate the clinical findings, biochemical characteristics, and outcomes of crush injury patients admitted to our tertiary hospital and the use of the McMahon score in determining the need for renal replacement therapy (RRT) in this patient group.
Methods
Sociodemographic, clinical, and biochemical parameters of 28 patients who had creatine kinase levels of 1000 U/L and above were recorded. Patients with crush injuries requiring and not requiring RRT were compared according to the McMahon Score.
Results
A total of 42% of patients developed AKI and 67% of them required renal replacement therapy. In crush injury patients requiring RRT, serum urea, creatinine, LDH, aspartate aminotransferase, alanine transaminase, phosphorus, and procalcitonin levels were significantly higher and albumin levels were significantly lower at admission compared to patients not requiring RRT. All patients who required RRT had a McMahon Score ≥6.
Conclusions
A high McMahon score at hospital admission is associated with an increased need for RRT.
Severe crush injury can result in sequelae such as significant bony fractures, rhabdomyolysis, extremity compartment syndrome or crush syndrome. Crush syndrome comprises the systemic manifestations that arise as a result of a crush injury followed by reperfusion. From the rupture of muscle cells, substances such as myoglobin, potassium, phosphorus and creatinine phosphokinase are released into the bloodstream. The patient can subsequently develop hyperkalemia, hypocalcemia, hypovolemia, shock, compartment syndrome, lactic acidosis or renal failure from traumatic rhabdomyolysis (seen in up to 40% of patients with crush injury).
A 32-year-old male presents with diffuse myalgias, weakness, and dark urine for 1 day. The patient states he recently started a new exercise program. He is hemodynamically stable, and his physical examination reveals diffuse muscle tenderness. His creatine kinase (CK) returns at 8,000 international units per liter (IU/L), and his urinalysis reveals blood but only three red blood cells (RBCs) on microscopy.
Troponin levels are often obtained when chest pain is evaluated in the paediatric emergency department. Elevations in troponin levels can be due to different causes, and it is important to fully understand all of these possible causes to help streamline further evaluation and therapy. We present the case of a teenager who had two episodes of troponin elevation in the setting of rhabdomyolysis.
Background: Neuromuscular disorders are a phenotypically and genotypically diverse group of diseases that can be difficult to diagnose accurately because of overlapping clinical features and nonspecific muscle pathology. Next-generation sequencing (NGS) is a high-throughput technology that can be used as a more time- and cost-effective tool for identifying molecular diagnoses for complex genetic conditions, such as neuromuscular disorders. Methods: One hundred and sixty-nine patients referred to a Canadian neuromuscular clinic for evaluation of possible muscle disease were screened with an NGS panel of muscular dystrophy–associated genes. Patients were categorized by the reason of referral (1) muscle weakness (n=135), (2) recurrent episodes of rhabdomyolysis (n=18), or (3) idiopathic hyperCKemia (n=16). Results: Pathogenic and likely pathogenic variants were identified in 36.09% of patients (61/169). The detection rate was 37.04% (50/135) in patients with muscle weakness, 33.33% (6/18) with rhabdomyolysis, and 31.25% (5/16) in those with idiopathic hyperCKemia. Conclusions: This study shows that NGS can be a useful tool in the molecular workup of patients seen in a neuromuscular clinic. Evaluating the utility of large panels of a muscle disease-specific NGS panel to investigate the genetic susceptibilities of rhabdomyolysis and/or idiopathic hyperCKemia is a relatively new field. Twenty-eight of the pathogenic and likely pathogenic variants reported here are novel and have not previously been associated with disease.
Crayfish or Procambarus clarkii is a freshwater crustacean with worldwide distribution. Tons of crayfish are consumed each year. In this report, four adult patients with rhabdomyolysis after consuming crayfish were described. All of them presented to the emergency department with myalgia. The diagnosis of rhabdomyolysis was supported by an elevated creatine kinase level. All recovered with supportive treatment. The clinical picture of these 4 patients was compatible with Haff disease. Haff disease is a syndrome in which rhabdomyolysis develops subsequent to consumption of certain cooked seafood. Crayfish is a common culprit. Diagnosis depends on obtaining a diet history and creatine kinase level. Most patients recover uneventfully with supportive treatment for rhabdomyolysis.
Crush syndrome, of which little is known, occurs as a result of compression injury to the muscles. This syndrome is characterized by systemic manifestations such as acute kidney injury (AKI), hypovolemic shock, and hydroelectrolytic variations. This pathology presents high morbidity and mortality if not managed aggressively by prehospital care.
Clinical Case
A 40-year-old worker was rescued after being buried underground in a ditch for 19 hours. The patient was administered early resuscitation with isotonic solutions and monitored during the entire rescue operation. Despite having increased plasma levels of total creatine kinase (CK), the patient did not develop AKI or hydroelectrolytic variations.
Conclusion
Aggressive early management with isotonic solutions before hospital arrival is an effective option for nephron-protection and prevention of crush syndrome.
MardonesA, ArellanoP, RojasC, GutierrezR, OliverN, BorgnaV. Prevention of Crush Syndrome through Aggressive Early Resuscitation: Clinical Case in a Buried Worker. Prehosp Disaster Med. 2016;31(3):340–342.
To review consequences of the changing demographic profile of anabolic-androgenic steroid (AAS) use.
Method
Case report and review of key papers.
Results
We report here a case of a 19-year-old Irish male presenting with both medical and psychiatric side effects of methandrostenolone use. The man had a long-standing history of harmful cannabis use, but had not experienced previous psychotic symptoms. Following use of methandrostenolone, he developed rhabdomyolysis and a psychotic episode with homicidal ideation.
Discussion
Non-medical AAS use is a growing problem associated with medical, psychiatric and forensic risks. The population using these drugs has changed with the result of more frequent poly-substance misuse, potentially exacerbating these risks.
Conclusion
A higher index of suspicion is needed for AAS use. Medical personnel need to be aware of the potential side effects of their use, including the risk of violence. Research is needed to establish the magnitude of the problem in Ireland.
Rhabdomyolysis is a potentially life-threatening syndrome that can develop from various causes. This study was undertaken to analyse the clinical spectrum and to evaluate the prevalence of various aetiologies in psychiatric patients with rhabdomyolysis.
Methods
We retrospectively analysed the medical charts of 87 patients. For them, serum creatine kinase (SCK) activity higher than 1500 IU/l was defined as rhabdomyolysis. The causes of increased SCK activity were assessed.
Results
The annual incidence of rhabdomyolysis during 2007–2012 was 0.8–1.45%. In 59 men and 28 women (17–87 years old; median 50.9 years), no relation was found between age and the highest value of SCK activity. Their SCK activities were 1544–186 500 IU/l (median 3566 IU/l), but 45% had SCK activity higher than 5000 IU/l. Men were at greater risk than women. Major aetiologic factors were medical drugs, excessive physical activity, and psychogenic polydipsia. Patients with psychogenic polydipsia and alcoholism had higher SCK activity. Acute kidney injury (AKI) occurred in 8 men (9.1%). Five patients died, but only one died of rhabdomyolysis.
Conclusions
Most psychiatric patients with rhabdomyolysis were asymptomatic. The increase in SCK activity subsided spontaneously without specific treatment.
This chapter discusses the diagnosis, evaluation and management of rhabdomyolysis. Physical examination of a patient with rhabdomyolysis may reveal muscle swelling and tenderness, with occasional skin changes including discoloration, induration, and blistering. It is possible for rhabdomyolysis to present without any of these signs or symptoms, making serum markers essential to the diagnosis. Severe cases may present with hypovolemic shock, acute kidney injury (AKI), metabolic acidosis, disseminated intravascular coagulation (DIC), compartment syndrome, hyperkalemia, and cardiac arrhythmias. Compartment syndrome occurs due to swelling and edema of the injured muscle: classic physical examination findings include pain, paresthesias, paralysis, pallor, and pulselessness. The cornerstone of management includes discontinuation of inciting factors and aggressive management of fluid and electrolyte abnormalities. Intravenous fluids enhance renal perfusion and increase urinary flow in order to prevent AKI and increase potassium excretion.
Intra-operative positioning considerations are more important for the obese patient. The supine position causes a marked increase in intra-abdominal pressure, which results in a splinting effect of abdominal contents on the diaphragm. Awake, spontaneously breathing obese patients should be in a head-up position. The Trendelenburg position can be used to engorge neck veins to facilitate central venous cannulation. Spontaneously breathing obese patients generally do not tolerate the Trendelenburg position. In mild to moderately obese patients, respiratory mechanics, lung volumes, and oxygenation all increase when changing from the supine to prone position. Due to the difficulties moving and positioning mobidly obese (MO) patients, procedures routinely performed prone are often done in the lateral decubitus position. In the lithotomy position the patient is on their back with their legs and thighs flexed at right angles. MO patients are at special risk for rhabdomyolysis (RML), a potentially fatal post-operative complication.
Serum creatine kinase and myoglobin elevation has been described involving muscle manipulation after surgery and also after bariatric, urologic and gynaecologic procedures. It encompasses a wide range of severity, reflecting in the worst cases true rhabdomyolysis. We occasionally noted creatine kinase elevations after intracranial neurosurgery, an occurrence that has not yet been described. To assess whether the issue of postoperative muscle enzyme elevation is relevant to neurosurgery, we prospectively measured serum creatine kinase and myoglobin in a series of neurosurgical patients submitted to craniotomy.
Materials and methods
We studied 30 patients aged 22–69 yr submitted to craniotomy. Blood samples were taken prior to the procedure, at the end of anaesthesia and on the first, second and third postoperative days. Blood was checked for creatine kinase, myoglobin, lactate dehydrogenase, aspartate aminotransferase, alanine aminotransferase, blood urea nitrogen, creatinine and serum electrolytes. We recorded the patient’s age, sex, height, weight and body mass index. Throughout surgery, we recorded the highest and the lowest body temperature and sampled the mean arterial pressure at 5 min intervals. We performed backwards stepwise logistic regression analysis to identify the elements that best correlate with the development of cell muscle damage.
Results
On the first postoperative day creatine kinase peaked from baseline (305 (107–1306) UI L−1 vs. 59 (42–94) UI L−1; P < 0.001) while myoglobin rose significantly from baseline to the end of surgery (70 (42–147) ng mL−1 vs. 36 (30–44) ng mL−1; P = 0.002). Logistic regression showed that length of surgery was the only factor clearly influencing peak creatine kinase (P < 0.001; R2 0.7) and myoglobin (P = 0.011; R2 0.41) concentration.
Conclusions
Creatine kinase and myoglobin elevation may occur after intracranial neurosurgery. In our series, length of surgery was a risk factor.
We present a case of possible olanzapine-induced rhabdomyolysis in the absence of other features of neuroleptic malignant syndrome (NMS). There is evidence to suggest that there are different underlying pathophysiological mechanisms for rhabdomyolysis occurring alone, in contrast to when it presents as part of NMS. This has possible implications for drug rechallenge which is discussed.
We report a case of non-ketotic hyperosmolar coma, which presented with blood sugar levels far exceeding any previously recorded in the literature. The patient developed acute renal failure, probably because of rhabdomyolysis, which was successfully managed with continuous veno-venous haemofiltration. He developed blurring of vision resulting from biochemical changes, which was managed conservatively. We discuss the mechanisms of causation of the renal failure and visual blurring.
We report a case of post-operative rhabdomyolysis following transmandibular buccopharyngectomy without reconstruction in a patient remaining in the supine position throughout the procedure. Muscle compression induced by a cushion used during the procedure had probably contributed to the rhabdomyolysis. Outcome was favourable without acute renal failure. Prevention, early diagnosis and treatment are the keys to a successful recovery.
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