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CMG
CMG abbreviation for Companion of St Michael and St George (a British title) C.M.G. Companion of the Order of St. Michael and St. George: a British title. EncyclopediaSeecaskCMG
CMGAbbreviation for cystometrogram.CASK A gene on chromosome Xp11.4 that encodes a calcium/calmodulin-dependent serine protein kinase of the membrane-associated guanylate kinase (MAGUK) family, which are scaffold proteins located at synapses in the brain. CASK is involved in synaptic transmembrane protein anchoring and ion channel trafficking; contributes to neural development and regulating gene expression by interacting with the transcription factor TRB1; binds to cell-surface proteins, including amyloid precursor protein, neurexins and syndecans; and may mediate a link between the extracellular matrix and the actin cytoskeleton with syndecan and the actin/spectrin-binding protein 4.1. Molecular pathology CASK mutations are associated with FG syndrome 4, mental retardation and microcephaly with pontine and cerebellar hypoplasia, as well as an X-linked form of mental retardation.CystometrySynonym/acronym: CMG, urodynamic testing of bladder function. Common use To assess bladder function related to obstruction, neurogenic pathology, and infection including evaluation of surgical, and medical management. Area of application Bladder, urethra. Contrast None. Description Cystometry evaluates the motor and sensory function of the bladder when incontinence is present or neurological bladder dysfunction is suspected and monitors the effects of treatment for the abnormalities. This manometric study measures the bladder pressure and volume characteristics in milliliters of water (cm H2O) during the filling and emptying phases. The test provides information about bladder structure and function that can lead to uninhibited bladder contractions, sensations of bladder fullness and need to void, and ability to inhibit voiding. These abnormalities cause incontinence and other impaired patterns of micturition. Cystometry can be performed with cystoscopy and electromyography pelvic floor sphincter. A post-void residual measurement can also be done at the bedside to measure how much urine is left in the bladder after the patient voids. Completion of this test requires catheterization of the patient directly after voiding. The amount of urine remaining is measured and reported as the post-void or residual urine. Normal post-void residual is less than 50 mL of urine. This may be adjusted to less than 100 mL for those over the age of 65. This procedure is contraindicated for- high alertPatients with acute urinary tract infections (UTIs) because the study can cause infection to spread to the kidneys.
- high alertPatients with urethral obstruction.
- high alertPatients who are unable to be catheterized.
- high alertPatients with cervical cord lesions because they may exhibit autonomic dysreflexia, as seen by bradycardia, flushing, hypertension, diaphoresis, and headache.
Indications- Detect congenital urinary abnormalities
- Determine cause of bladder dysfunction and pathology
- Determine cause of recurrent urinary tract infections (UTIs)
- Determine cause of urinary retention
- Determine type of incontinence: functional (involuntary and unpredictable), reflex (involuntary when a specific volume is reached), stress (weak pelvic muscles), total (continuous and unpredictable), urge (involuntary when urgency is sensed), and psychological (e.g., dementia, confusion affecting awareness)
- Determine type of neurogenic bladder (motor or sensory)
- Evaluate the management of neurological bladder before surgical intervention
- Evaluate postprostatectomy incontinence
- Evaluate signs and symptoms of urinary elimination pattern dysfunction
- Evaluate urinary obstruction in male patients experiencing urinary retention
- Evaluate the usefulness of drug therapy on detrusor muscle function and tonicity and on internal and external sphincter function
- Evaluate voiding disorders associated with spinal cord injury
Potential diagnosisNormal findings- Amount of post-void residual urine is less than 50 mL
- Normal sensory perception of bladder fullness, desire to void, and ability to inhibit urination; appropriate response to temperature (hot and cold)
- Normal bladder capacity: 350 to 750 mL for men and 250 to 550 mL for women
- Normal functioning bladder pressure: 8 to 15 cm H2O
- Normal sensation of fullness: 40 to 100 cm H2O or 300 to 500 mL
- Normal bladder pressure during voiding: 30 to 40 cm H2O
- Normal detrusor pressure: less than 10 cm H2O
- Normal urge to void: 150 to 450 mL
- Normal filling pattern
- Urethral pressure that is higher than bladder pressure, ensuring continence
Abnormal findings related to- Flaccid bladder that fills without contracting
- Inability to perceive bladder fullness
- Inability to initiate or maintain urination without applying external pressure
- Sensory or motor paralysis of bladder indicated by reduced filling pressures
- Total loss of conscious sensation and vesical control or uncontrollable micturition (incontinence)
Critical findingsInterfering factorsFactors that may impair the results of the examination- Inability of the patient to cooperate or remain still during the procedure because of age, significant pain, or mental status.
- Inability of the patient to void in a supine position or straining to void during the study.
- A high level of patient anxiety or embarrassment, which may interfere with the study, making it difficult to distinguish whether the results are due to stress or organic pathology.
- Administration of drugs that affect bladder function, such as muscle relaxants or antihistamines.
Nursing Implications and ProcedurePretest- Positively identify the patient using at least two unique identifiers before providing care, treatment, or services.
- Patient Teaching: Inform the patient this procedure can assist in assessing bladder function.
- Obtain a history of the patient’s complaints, including a list of known allergens, especially allergies or sensitivities to latex or medications that may be used during the procedure.
- Obtain a history of the patient’s genitourinary system, symptoms, and results of previously performed laboratory tests and diagnostic and surgical procedures.
- Record the date of the last menstrual period and determine the possibility of pregnancy in perimenopausal women.
- Obtain a list of the patient’s current medications, including anticoagulants, aspirin and other salicylates, herbs, nutritional supplements, and nutraceuticals (see Effects of Natural Products on Laboratory Values online at DavisPlus). Note the last time and dose of medication taken.
- Review the procedure with the patient. Address concerns about pain and explain that there may be moments of discomfort and some pain experienced during the test. Inform the patient that the procedure is performed in a special urology room or in a clinic setting by the health-care provider (HCP), with support staff, and takes approximately 30 to 45 min.
- Sensitivity to social and cultural issues, as well as concern for modesty, is important in providing psychological support before, during, and after the procedure.
- Instruct the patient to report pain, sweating, nausea, headache, and the urge to void during the study.
- Note that there are no food, fluid, or medication restrictions unless by medical direction.
- Make sure a written and informed consent has been signed prior to the procedure and before administering any medications.
IntratestPost-Test- Inform the patient that a report of the results will be made available to the requesting HCP, who will discuss the results with the patient.
- Monitor fluid intake and urinary output for 24 hr after the procedure.
- Monitor vital signs after the procedure every 15 min for 2 hr or as directed. Monitor intake and output at least every 8 hr. Elevated temperature may indicate infection. Notify the HCP if temperature is elevated. Protocols may vary among facilities.
- Instruct the patient to immediately report symptoms such as fast heart rate, difficulty breathing, skin rash, itching, chest pain, persistent right shoulder pain, or abdominal pain. Immediately report symptoms to the appropriate HCP.
- Inform the patient that he or she may experience burning or discomfort on urination for a few voidings after the procedure.
- Persistent flank or suprapubic pain, fever, chills, blood in the urine, difficulty urinating, or change in urinary pattern must be reported immediately to the HCP.
- Recognize anxiety related to test results. Discuss the implications of abnormal test results on the patient’s lifestyle. Provide teaching and information regarding the clinical implications of the test results, as appropriate.
- Reinforce information given by the patient’s HCP regarding further testing, treatment, or referral to another HCP. Answer any questions or address any concerns voiced by the patient or family.
- Depending on the results of this procedure, additional testing may be needed to evaluate or monitor progression of the disease process and determine the need for a change in therapy. Evaluate test results in relation to the patient’s symptoms and other tests performed.
Related Monographs- Related tests include bladder cancer markers, calculus kidney stone panel, Chlamydia group antibody, CBC, CBC hematocrit, CBC hemoglobin, CT pelvis, culture urine, cytology urine, IVP, MRI pelvis, PT/INR, US pelvis, and UA.
- Refer to the Genitourinary System table at the end of the book for related tests by body system.
CMG
Acronym | Definition |
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CMG➣Cox Media Group (various locations) | CMG➣Computer Measurement Group | CMG➣Coastal & Marine Geology (USGS) | CMG➣Chipotle Mexican Grill, Inc. (stock symbol) | CMG➣Companion (of the Order Of) St Michael and St George | CMG➣Case Management Group (various organizations) | CMG➣Concord Music Group (Cleveland, OH record company) | CMG➣Community Medical Group (various locations) | CMG➣Color Marketing Group | CMG➣Construction Materials Group (various locations) | CMG➣Computational Migration Group | CMG➣Computer Manufacturers Group | CMG➣Command Management | CMG➣Control Moment Gyro(scope) | CMG➣Capitol Music Group (record label) | CMG➣Cystometrogram | CMG➣Chinese Music Group (university group; Australia) | CMG➣Con Mucho Gusto (Spanish: WIth Pleasure) | CMG➣Climate Modeling Grid | CMG➣Coke Machine Glow | CMG➣Canadian Media Guild (Union) | CMG➣Criminal Motorcycle Gang (Australia) | CMG➣Colorado Master Gardener | CMG➣Contemporary Music Group (various organizations) | CMG➣Candlelight Media Group | CMG➣Case Mix Group | CMG➣Carlson Marketing Group (Carlson Companies, Inc.) | CMG➣Course Made Good (navigation) | CMG➣Choix du Mode de Garde (French: Choice of Childcare) | CMG➣Common Market Group (various locations) | CMG➣Call Me God | CMG➣Computec Media Group (Germany) | CMG➣Cornerstone Media Group (various locations) | CMG➣Colt Machine Gun | CMG➣Consequence Management Group (US FEMA) | CMG➣Certified Master Groomer (pet care) | CMG➣Chaos Magick Group | CMG➣Creative Marketing Group (Russian advertising agency) | CMG➣Catchment Management Group | CMG➣Constraints Management Group | CMG➣Communications General (cable rating) | CMG➣Caden Murray Group, LLC (Gilbert, AZ) | CMG➣Christus Medical Group (Texas) | CMG➣Canadian Motorcycle Guide | CMG➣Corumba, Mato Grosso Do Sul, Brazil - Corumba (Airport Code) | CMG➣Converged Mobility Gateway | CMG➣Chief Marine Gunner (US Marine Corps) | CMG➣Capillary Morphogenesis Gene | CMG➣Club Mardi Gras (Scottsdale, AZ) | CMG➣Creative Mountain Games | CMG➣Collaboration in Mathematical Geosciences | CMG➣Constructions Mécaniques du Grimaud (French mechanical engineering company; Grimaud, France) | CMG➣– Combat Mission Guide (US DoD) | CMG➣Combat Mission Guide | CMG➣Commission for Marine Geology (IUGS) | CMG➣Club de Modélisme de la Guadeloupe (French: Model Club of Guadeloupe; Guadeloupe) | CMG➣Charpente Menuiserie des Graves (French carpentry company) | CMG➣Casual Mature Gamers (gaming community) | CMG➣Candy, Mint and Gum (Hershey Co.) | CMG➣Canadian Medical Graduate | CMG➣Custom Management Group (Charlottesville, VA) | CMG➣City Motors Groep NV | CMG➣Custodial Maintenance Grounds | CMG➣Computer Management Group, Inc. | CMG➣Consumer Markets Group | CMG➣Chong - Motani - Garg | CMG➣Constructions Métalliques Grésillon (French steel construction company) | CMG➣Chaudronnerie Mécanique de Gauchy (French sheet metal company) | CMG➣Chicago Motorcycle Guide (website) | CMG➣Certified Master Graphologist | CMG➣Command Moment Gyro | CMG➣CustomMinisiteGraphics | CMG➣Centre for Migration History (University of Amsterdam) | CMG➣CUNA (Credit Union National Association) Mutual Group (Madison, WI) | CMG➣Commissioning Maintenance Group (TWG/TAT-14) | CMG➣Control & Management Group | CMG➣Chesapeake Midwifery Guild (Columbia, MD) | CMG➣Commonly Maintained Grounds | CMG➣Coulaux-Maricot-Georganta (French law firm) | CMG➣Charpente Menuiserie Guilloteau (French carpentry company) | CMG➣Construction Morel Gérard (French construction company) | CMG➣Centre Matériel Général (French: General Hardware Center) | CMG➣Charlesview Management Group, LLC |
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