What does PN mean in medicine?

1. PN full name parenteralnutrition, Chinese translated as parenteral nutrition, is from the intravenous supply of nutrition as a nutritional support before and after surgery and critically ill patients, all nutrition from the outside of the intestine is called total parenteralnutrtion (TPN).

Parenteral nutrition (PN) is a nutrient that is required by intravenous routes**, including calories (carbohydrates, fat emulsions), essential and non-essential amino acids, vitamins, electrolytes, and trace elements. Parenteral nutrition is divided into full parenteral nutrition and partial supplemental parenteral nutrition. The goal is to maintain nutritional status, gain weight, and heal wounds even when the patient is unable to eat normally, so that the child can continue to grow and develop.

Intravenous infusion routes and infusion techniques are necessary for parenteral nutrition.

2. PN full name enternalnutrition, Chinese translated as gastrointestinal nutrition, refers to gastrointestinal dysfunction, functional failure, intestinal fistula, short bowel syndrome caused by disease or trauma, surgery, resulting in diet can not be ingested, digested, absorbed, so that it is necessary to take appropriate ways to feed special nutrients through the gastrointestinal tube to achieve the purpose of nutrition **.

The most common complications in enteral nutrition support are gastrointestinal complications, most of which can be corrected promptly, with nausea, vomiting, and diarrhoea being the most common.

1. PN means nominal pressure.

The simple noisy explanation is the pressure indication of pipes and pipe fittings, valves and other equipment in daily life. Generally, there is a clear annotation on the top of these devices with the value of pn, which also makes the equipment have different functions in different applications. Let's take a closer look at PN.

2. PN can also be understood as the pressure excitation denier force level, the value of PN will be clearly marked on the valve on some pipelines, and the value of PN indicates that the nuisance is not unified, some countries do not completely use this value to represent the pressure of the equipment, the pressure value commonly used in China is expressed as "MPA", but some equipment uses PN, as long as it is the agreed pressure representation, and the difference is not big, it can be used, and there are no stricter regulations.

Dear users, PN can have a variety of meanings, and I will explain it in detail for you below:1PN is an abbreviation for product model number, which usually refers to the model or specification of the returned product.

For example, products such as mobile phones, computers, and automobiles all have their own PN numbers for easy production, sales, and maintenance. 2.pn can also be a symbol in physics that denotes the reaction of positive and negative electron pairs.

In chemical reactions, PN can also be used to clear the reaction of positive and negative ions. 3.In the field of communication, PN can refer to pseudo-random noise code (pseudo-noise), which is a technology used for spread-spectrum communication, which can improve the security and anti-interference of communication.

4.In medicine, PN can refer to platelet number, which is a blood test used to assess the number and function of platelets. In summary, PN can have a variety of meanings, depending on the domain and context in which the leak is revealed.

Hopefully, my explanation will be helpful to you.

Nominal pressure pn(: The reference value related to the pressure resistance of piping system components, for ease of use, the priority number of the R10 series is often taken. The nominal pressure refers to the working pressure of the pipe at the secondary temperature (20).

If the water temperature is between 25 and 45, the working pressure should be corrected according to different temperature drop coefficients.

PN is the nominal meaning of pressure.

The nominal pressure pn is a reference value related to the withstand pressure of the piping system components. For ease of use, the R10 series is usually given priority. Nominal pressure refers to the working pressure of the conveying pipeline at the secondary temperature.

If the water temperature is between 25 and 45 degrees Celsius, the working pressure should be corrected according to different temperature drop coefficients. It is a round integer for easy reference. Fittings with the same nominal bore value have the same connection size and end connection type.

PN, nominal pressure, definition of nominal pressure.

Nominal pressure pn(: A reference value related to the pressure resistance of piping system components, for ease of use, the priority number of the R10 series is usually taken. The nominal pressure refers to the working pressure of the pipe at the secondary temperature (20).

If the water temperature is between 25 and 45, the working pressure should be corrected according to different temperature drop coefficients.

Nominal pressure pn is a numerical designation for pressure, which is a convenient round integer for reference. All piping accessories of the same nominal diameter represented by the same nominal pressure pn value have the same connection size corresponding to the end connection type.

is indicated, that is, 16 kg pressure.

PN, Nominal Pressure, is a representation of pressure; It is mainly used to express the pressure of housing equipment such as pipes and pipe fittings, valves, etc.

The most recent definition of PN is derived from the standard GB T1048-2005 "Definition and Selection of PN (Nominal Pressure) of Piping Elements" and is referenced in various pipe fittings and pipe standards. GB T1048-2005 adopts ISO CD7268:1996 pipecomponents--definitionofnominalpressure for modification, and adds a note compared with the original standard

Other PN values are allowed to be used when necessary, i.e., other PN values can be used outside the specified PN series.

Current status of pn's citations:

HG T20592 206142009 edition of PN series (European system) pipe flanges, gaskets, fasteners standard is a revision of the 1997 version of the series of standards, and the representation method of PN series has been standardized in accordance with GB T1048-2005, and PN series marks with MPA units are no longer used per muzhao.

The series flange standard of the 91242010 version of GB T9112 is a revision of the 2000 version of the bridge rent-resistant series standard, and the representation method of the PN series has been standardized in accordance with GB T1048-2005, and the PN series mark with MPA units is no longer used.

JB T series pipes and fittings are the standard.

The above content reference: Encyclopedia - pn<>