What is henssge nomogram?
The Henssge nomogram technique for estimation of post mortem interval (PMI) utilizing body cooling is used worldwide by forensic pathologists (FPs) who may photocopy the nomogram from a popular source such as the textbook Knight’s Forensic Pathology [1, 2] to calculate the PMI.
What is the most reliable method to determine PMI?
While there are numerous methods for estimating time since death, the most widely used methodology for estimating PMI is based on cadaveric cooling measured by rectal temperature [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16].
Which indicator is most reliable in determining PMI or time of death )?
The early post-mortem phase is probably the most important time period for PMI estimation as most medico-legal cases are examined in this time period. This period is also where the estimation of time since death is most relevant in establishing the timeline of events and developing a theory of circumstances of death.
How is body temperature used to determine time of death?
2.1 The Glaister Equation The Glaister Equation calculates the hours passing after death as a linear function of the body temperature taken of the decedent. The equation is (98.7 degrees Fahrenheit – the body temperature of the decedent) / (1.5 degrees/hour) = PMI.
How does temp affect PMI?
The warmer the ambient temperature, the faster the decomposition is [23]. An environment temperature between 25 and 35 °C is an ideal situation for bacteria to develop [10]. If the aforementioned variables are not included when determining the PMI; the PMI could be longer or shorter than predicted [11].
What 3 measurements are included on a nomogram?
A nomogram often consists of three variables (independent variable, parameter or constant; dependent variable; conversion factor), which give functional relations between two variables that are parallel to each other.
Can a body stay warm after death?
During life, the body maintains a temperature of approximately 98.6°F, which is an optimum operating temperature for many of the body’s chemical reactions. After death, the body no longer maintains this temperature, so it begins to cool and equilibrate to the ambient temperature.
How is PMI determined?
Calculate the LTV. Divide the loan amount by the property value. Then multiply by 100 to get the percentage. If the result is 80% or lower, your PMI is 0%, which means you don’t have to pay PMI. If it’s higher than 80%, move on to the next step.