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24 Possible Causes for Abdominal Pain, Aspiration Pneumonia, Compound Muscle Action Potential with Low Amplitude

  • Guillain-Barré Syndrome

    Absence of abdominal pain does not exclude the possibility of porphyria, and attacks may be precipitated by antiretroviral and antituberculosis medication.[] Thromboembolism, pneumonia, skin breakdown. Cardiac arrhythmia. Ileus. Aspiration pneumonia. Urinary retention. Psychiatric problems - eg, depression, anxiety.[] muscle action potentials reduced amplitude with relatively preserved conduction velocity implicates axonal neuropathy delayed/absent F waves implicates nerve root involvement[]

  • Food-Borne Botulism

    Results: A 36 years-old patient “A”, a 49 years-old patient “B” and a 17 years-old patient “C” have abdominal pain, vomiting, difficulty swallowing and speaking, dyspnea,[] A higher chance of acquiring aspiration pneumonia, respiratory distress, long-lasting weakness, and nervous system problems for up to a year following the illness is common[] Electrophysiologic tests of such patients show reduced compound muscle action potentials (CMAPs), low amplitudes and short durations of motor unit potentials (MUPs), and mild[]

  • Dermatomyositis

    pain, because it may suggest the presence of renal infarction.[] Pulmonary manifestations range from aspiration pneumonia to interstitial lung disease (ILD), sometimes with complications such as pulmonary arterial hypertension (see these[] Low compound muscle action potentials (CMAP) amplitudes may not necessarily indicate a neuropathic process, as it may reflect muscle atrophy and fibrosis.[]

  • Myasthenia Gravis

    A 55-year-old man, who received oral tacrolimus and prednisolone for MG for 16 years after thymectomy, presented with left abdominal pain, lymphadenopathy, and splenomegaly[] Complications Aspiration pneumonia due to throat muscle weakness. Acute respiratory failure during an exacerbation.[] Distinguishing features of the RNS test in LEMS and MG are confirmed in this direct comparison study: the low compound muscle action potential amplitude, decrement at LRS,[]

  • Inclusion Body Myositis

    This test can be used to determine the cause of painful swallowing, difficulty with swallowing, abdominal pain, bloodstained vomit, or unexplained weight loss.[] The incidence of dysphagia, rate of aspirations, rate of aspiration pneumonias and treatment results of dysphagia were analyzed.[] However, the low compound muscle action potential amplitudes could be explained by the loss of excitable muscle tissue that occurs in myopathies.[]

  • Neuropathy

    Plus, you could feel fullness, nausea, or abdominal pain even after small meals if your stomach holds on to food instead of sending it along to the small intestine.[] Compounding the problem of aspiration pneumonias and chronic lung disease is the presence of relative insensitivity to hypoxemia [ 23 - 26 ], which limits ability to cope[] Patients have relatively normal nerve conduction velocities but low amplitude sensory nerve action potentials and compound muscle action potentials.[]

  • Acute Pandysautonomia

    pain, vomiting, constipation, diarrhea, gastroparesis, ileus), orthostatic hypotension, erectile dysfunction, urinary frequency, urgency or retention, vasomotor instability[] The patients are at risk for sustaining injury during falls and developing urinary tract infection or aspiration pneumonia.[] In cases of suspected neuromuscular transmission defect, such as with botulism or LEMS, a typical electrophysiologic pattern of low-amplitude compound muscle action potentials[]

  • Acute Juvenile Hemorrhagic Cystitis

    pain, and arthritis may be in any sequence, although abdominal pain and arthritis are not universally present.[] A high percentage of patients with IBM are affected ( 133 ), which leads to the risk for malnutrition and aspiration pneumonia.[] - aspiration with granulomatous bronchiolitis and lipoid pneumonia Case 278: 62 year old man with anterior mediastinal mass - atypical carcinoid tumor of thymus Case 266:[]

  • Lambert Eaton Myasthenic Syndrome

    pain, nausea, diarrhea, headache, elevated liver enzymes, back pain, hypertension and muscle spasms.[] Approximately 2 months after the operation, he had aspiration pneumonia with respiratory failure.[] Distinguishing features of the RNS test in LEMS and MG are confirmed in this direct comparison study: the low compound muscle action potential amplitude, decrement at LRS,[]

  • Miller-Fisher Syndrome

    He complained of abdominal pain and lethargy. Ophthalmic examination showed the presence of bilateral sixth nerve palsies ( Figure ) with the absence of papilledema.[] The immediate cause of death was considered to be aspiration pneumonia.[] CBs resolved, distal compound muscle action potential (CMAP) amplitudes increased and SNAPs normalized on subsequent testing.[]

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