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Guides Newsletter (2020) 25 (6): 3–6.
Published: 01 November 2020
... provide valuable services. This article provides insights into one such program, the subsequent injuries benefits trust fund (SIBTF) in California. To be eligible for SIBTF benefits, the injured worker must meet an “overall threshold” and an “industrial threshold” of disability to qualify for benefits. If...
Guides Newsletter (2020) 25 (3): 12–19.
Published: 01 May 2020
..., Sixth Edition, must be used for impairment ratings, the law reduces the threshold for total disability benefits from 50% to 35% impairment. This legislative adjustment benefited injured workers but sparked additional litigation about whether, when, and how the adjustment should be applied (excerpts from...
Guides Newsletter (2021) 26 (1): 9–17.
Published: 01 January 2021
... automated visual field testing limited to the macular 30°, 24°, or 10° invariably are rebuttable at deposition and, therefore, are suboptimal. While the peripheral-60° mode on a Humphrey visual field static threshold analyzer is useful for excluding visual field loss, Goldmann manual kinetic perimetry...
Guides Newsletter (2019) 24 (3): 10–13.
Published: 01 May 2019
... improvement and are technically adequate; 2) the proper methodology is used in obtaining measurements of translation and angular motion; 3) normal translation and angular-motion thresholds consistent with the literature are used in determining AOMSI. Imaging modalities such as videofluoroscopy, digital...
Guides Newsletter (2019) 24 (2): 3–5, 16.
Published: 01 March 2019
... sensory and assignment of CTS are sensitive to threshold changes from a latency of, eg, >4.4 msec vs >4.5 msec. Other factors to consider include whether there are effects from the known association between wrist ratio and CTS and assessing the benefits of neuromuscular ultrasound to diagnose CTS...
Guides Newsletter (2020) 25 (4): 8–11.
Published: 01 July 2020
... cases), most physicians would not feel this case had reached the “>50% threshold” for causation. The reported loss of the sense of smell is a subjective symptom that has not been confirmed by the University of Pennsylvania smell identification test (UPSIT) or the Burghart Sniffin' Sticks test. Loss...
Guides Newsletter (2020) 25 (4): 3–7.
Published: 01 July 2020
... for which full metabolic stress echocardio-gram would be needed. If the echocardiogram is normal, then other systemic illness such as anemia or lung abnormalities are most likely. If the spirometry was normal, but stress testing showed the individual crossed the aerobic threshold (first ventilatory...
Guides Newsletter (2020) 25 (2): 3–8.
Published: 01 March 2020
... law, the AMA Guides is sometimes used to quantify the extent of injuries that result from an automobile casualty or personal injury or is used as a threshold to differentiate between a serious and nonserious injury. The AMA Guides is used in similar ways internationally. The US Department of...
Guides Newsletter (2020) 25 (1): 3–11.
Published: 01 January 2020
... Surg Am. 2019;101(5):384–391. Background: Preoperative opioid use results in adverse outcomes and higher costs after elective surgery. However, duration thresholds for higher risk are not entirely known. Therefore, the purpose of our study was to determine the number and duration of...
Guides Newsletter (2002) 7 (2): 7–10.
Published: 01 March 2002
...Christopher R. Brigham, MD Workers’ compensation jurisdictions use the AMA Guides to the Evaluation of Permanent Impairment ( AMA Guides ), in various ways, including as a proxy for disability, either as a direct correlate or as a threshold indicator. The AMA Guides clearly states that it should...
Guides Newsletter (2017) 22 (1): 11–16.
Published: 01 January 2017
... follows: 1) collect evidence of disease; 2) collect epidemiological data; 3) collect evidence of exposure; 4) collect other relevant factors; 5) evaluate the validity of the evidence; and 6) write a report with evaluation and conclusions. Evaluators also should recognize that thresholds for causation vary...
Guides Newsletter (2019) 24 (5): 8–13.
Published: 01 September 2019
... drugs. In 2017, the American College of Cardiology and the American Heart Association lowered the threshold for the definition of hypertension to 130 systolic and 80 diastolic, increasing the percentage of adult population with the disease from 32% to 46%, or 103 million individuals. 32 Some of...
Guides Newsletter (2019) 24 (4): 3–14.
Published: 01 July 2019
... a path of least resistance (eg, escalating and revising symptoms); and (6) systemic factors (eg, advocagenic and worker-centered statutes, having a low threshold for prima facie medical evidence, and relying on poor quality Independent Medical Examination [IME]). Some solutions to these problems...
Guides Newsletter (2019) 24 (1): 3–14.
Published: 01 January 2019
... will be an issue. Even less frequent is the case where age is one of the factors in the apportionment. It is likely that the most frequent of these is carpal tunnel syndrome (see below). Vibratory thresholds are indirectly related to age. 17 Normal sensation, as measured by nerve conduction...
Guides Newsletter (2016) 21 (6): 3–4.
Published: 01 November 2016
... currently available regarding causation of the condition(s) in question, ie, generic causation; the facts of the individual case, ie, specific causation; and the legal threshold in the applicable jurisdiction for acceptance of a condition as work related. The AMA Guides to the Evaluation of Disease and...
Guides Newsletter (2017) 22 (4): 12–13.
Published: 01 July 2017
...’ compensation cases. Impairment should be evaluated using the most current and widely accepted standard. As medicine evolves, so does our understanding of best practices in impairment evaluation. In using impairment as a threshold for permanent disability benefits, it is imperative to distinguish between...
Guides Newsletter (2017) 22 (4): 6–11, 16.
Published: 01 July 2017
... justified clinically. It must result in the most accurate impairment rating that reaches the threshold of substantial evidence. As noted in Chapter 13, The Central and Peripheral Nervous System, when a brain injury or illness affects the central nervous system, several areas of function may be impaired...
Christopher R. Brigham, MD, Charles N. Brooks, MD, Stephen Demeter, MD, MPH, Lorne Direnfeld, MD, Randy Soo Hoo, MD, MPH
Guides Newsletter (2017) 22 (3): 3–5.
Published: 01 May 2017
... states’ Second Injury Funds require the permanent condition to meet a specific impairment percentage under the AMA Guides or resulting number of weeks of benefits. For example, in Hawaii the threshold is 32 weeks of benefits and loss of a leg results in 288 weeks of benefits. Therefore the threshold...
Guides Newsletter (2017) 22 (2): 13–14.
Published: 01 March 2017
... are calebrated to ANSI Standard S3.6-1996 reference levels. 4 b Decibel sum of the hearing threshold levels at 500, 1000, 2000, and 3000 Hz. TABLE 11-3 Relationship of Binaural Hearing Impairment to Impairment of the Whole Person % Binaural Hearing Impairment % Impairment of the...
Guides Newsletter (2017) 22 (2): 3–5.
Published: 01 March 2017
... non-key factors. Step 5: Combine the adjusted sensory and motor ratings. The 2 clinical tests that are commonly used to quantitatively measure sensory deficits are the 2-point test for fine discrimination sensibility and the Semmes–Weinstein monofilament touch pressure threshold test...