Vasopressor Choice for Spinal Hypotension

CA-2 · I.C.1.a.2.b I.C.1.a.2.c I.C.1.b.2

38Sources
6Kept
0Dropped

1 · Find evidence

PubMed query

Every result is a real PMID returned by NCBI. Nothing on this step is generated.

Ask OpenEvidence ↗

OpenEvidence opens in your own logged-in session with the question filled in. Nothing is fetched on your behalf — read it there, then add what you want to teach as a point below, citing the source it came from.

38 candidate papers

Ticked papers are the ones a deck may be built from. Unticking one needs a reason — the citation gate proves a paper exists, and nothing but you decides whether it should be taught. A tier badge appears where the paper’s publication type is known.

Same-day build

PubMed query

Runs the tiered searches, drafts one point per included paper, runs the citation gate and builds a draft deck — the steps below, unattended. Same-day build — drafted locally (medgemma:27b), confirmed against each abstract. The deck still lands in draft: nothing here approves anything.

2 · Teaching points

Source

A point with no source will not survive the gate. That is the point of the gate.

6 points

Norepinephrine, metaraminol, and mephentermine may have a lower probability of adversely affecting fetal acid-base status (umbilical arterial base excess) compared to phenylephrine during Caesarean delivery under neuraxial anesthesia. PMID 31810562 kept
Ranked across 109 trials of spinal anaesthesia for caesarean section, metaraminol, norepinephrine and phenylephrine were the most effective at preventing hypotension, while crystalloid given before induction was no better than control. PMID 31531852 kept
Given by infusion, norepinephrine held systolic pressure as well as phenylephrine but with a higher heart rate and cardiac output, lower systemic vascular resistance and less bradycardia. PMID 25635593 kept
Using equipotent boluses, bradycardia occurred in 11% with norepinephrine 6 micrograms versus 38% with phenylephrine 100 micrograms, and fewer patients needed rescue ephedrine. PMID 30113395 kept
Phenylephrine raises blood pressure while lowering cardiac output, and although it increases cerebral blood flow it decreases cerebral tissue oxygen saturation. PMID 37948131 kept
Norepinephrine 8 micrograms is about equivalent to phenylephrine 100 micrograms, a potency ratio near 13 to 1, so the two cannot be swapped at the same numerical dose. PMID 28872480 kept

Checks every citation against PubMed, the DOI resolver, or a live fetch. Points that do not resolve are dropped and shown to you with the reason — never quietly softened.

4 · Build the deck

Oral boards stem — optional

Decks

Deck 827d6537 draft
5 · Question bank

Oral boards prompts for you

No module in the boards bank matches this topic yet.