How does myocardial infarction cause retention of urine?

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Discussion Overview

The discussion revolves around the mechanisms by which myocardial infarction (MI) may lead to urinary retention, specifically focusing on the physiological processes involved rather than reduced urine output or pre-renal failure. Participants also touch upon the paradox of diuretics potentially causing urine retention.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about the specific mechanisms that lead to urine retention in the bladder following myocardial infarction, distinguishing it from reduced urine output.
  • Another participant mentions that myocardial infarction can lead to disturbed blood supply, which may affect kidney function, but does not directly address bladder retention.
  • There is a suggestion that the stress response related to myocardial infarction could be a factor in urine retention, although this is not substantiated with evidence.
  • One participant notes a lack of found correlations between myocardial infarction and urinary retention, while also mentioning potential side effects of certain medications that could contribute to this issue.
  • Diuretics are discussed as potentially causing urine retention, which raises questions about their effectiveness and mechanisms.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the mechanisms linking myocardial infarction to urinary retention, and multiple competing views and uncertainties remain regarding both myocardial infarction and diuretic effects.

Contextual Notes

Participants express uncertainty about the direct connections between myocardial infarction and urinary retention, highlighting the need for further investigation into the physiological processes involved. There are also references to potential side effects of medications that may complicate the discussion.

sameeralord
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Hello everyone,

How does this occur. I'm talking about retention (eg urine stuck in bladder) not the pre renal failure which myocardial infarction can obviously cause.

Also while we are at it, I also read diuretics can cause retention of urine also. That's interesting because that defeats their purpose in the first place. So how do diuretics also cause urine retention.

Thanks :smile:
 
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I googled "myocardial infarction decreased urine output" and found a lot of information there.
Are you looking for something special?

Usually it is a malfunction of the kidneys which can have many reasons.
In the event of a myocardial infraction, Wiki says it's due to disturbed blood supply.
Concerning diuretics in https://en.wikipedia.org/wiki/Diuretic is much information including retention.
 
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@fresh_42: Thanks for the response. I'm not talking about reduced urine output, as I said in first post, cardiac insufficiency due to MI can obviously cause low output renal failure. What I'm asking is why does MI cause urine to retain in bladder. Is this due to some stress respone.
 
sameeralord said:
@fresh_42: Thanks for the response. I'm not talking about reduced urine output, as I said in first post, cardiac insufficiency due to MI can obviously cause low output renal failure. What I'm asking is why does MI cause urine to retain in bladder. Is this due to some stress respone.
Sorry, haven't found any correlations except that MI increases the risk for bladder cancer and as common side-effects of some drugs as Clozapine or Diazepam. If I were a P.D. I would search the list of heart enzymes that are produced by a MI and see, if they may cause urine retention. Otherwise I seriously doubt there is a connection.
 
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