Alveolar - arterial (A-a) Gradient
ASO Keyword Dashboard
Tracking 59 keywords for Alveolar - arterial (A-a) Gradient in Apple App Store
Alveolar - arterial (A-a) Gradient tracks 59 keywords (3 keywords rank; 56 need traction). Key metrics: 0% top-10 coverage, opportunity 70.8, difficulty 36.3, best rank 36.
Tracked keywords
59
3 ranked • 56 not ranking yet
Top 10 coverage
0%
Best rank 36 • Latest leader —
Avg opportunity
70.8
Top keyword: age
Avg difficulty
36.3
Lower scores indicate easier wins
Opportunity leaders
- 66.4
age
Opportunity: 73.0 • Difficulty: 42.6 • Rank —
Competitors: 270
- 64.6
patient
Opportunity: 73.0 • Difficulty: 38.9 • Rank —
Competitors: 38
- 67.0
higher
Opportunity: 73.0 • Difficulty: 41.5 • Rank —
Competitors: 282
- 63.4
pressure
Opportunity: 73.0 • Difficulty: 39.3 • Rank —
Competitors: 148
- 67.2
amount
Opportunity: 73.0 • Difficulty: 41.9 • Rank —
Competitors: 256
Unranked opportunities
age
Opportunity: 73.0 • Difficulty: 42.6 • Competitors: 270
patient
Opportunity: 73.0 • Difficulty: 38.9 • Competitors: 38
higher
Opportunity: 73.0 • Difficulty: 41.5 • Competitors: 282
pressure
Opportunity: 73.0 • Difficulty: 39.3 • Competitors: 148
amount
Opportunity: 73.0 • Difficulty: 41.9 • Competitors: 256
High competition keywords
information
Total apps: 121,675 • Major competitors: 1,488
Latest rank: — • Difficulty: 52.2
available
Total apps: 95,796 • Major competitors: 2,470
Latest rank: — • Difficulty: 53.9
based
Total apps: 79,228 • Major competitors: 1,405
Latest rank: — • Difficulty: 50.5
across
Total apps: 45,183 • Major competitors: 1,374
Latest rank: — • Difficulty: 51.7
following
Total apps: 30,546 • Major competitors: 696
Latest rank: — • Difficulty: 46.3
All tracked keywords
Includes opportunity, difficulty, rankings and competitor benchmarks
| Major Competitors | |||||||
|---|---|---|---|---|---|---|---|
| gradient | 70 | 100 | 31 | 51 1,092 competing apps Median installs: 500 Avg rating: 4.2 | 36 | 36 | 33 major competitor apps |
| oxygen | 70 | 100 | 30 | 50 967 competing apps Median installs: 450 Avg rating: 4.1 | 81 | 81 | 21 major competitor apps |
| altitude | 70 | 100 | 31 | 51 1,228 competing apps Median installs: 350 Avg rating: 4.2 | 141 | 141 | 20 major competitor apps |
| medical | 71 | 100 | 44 | 72 21,744 competing apps Median installs: 250 Avg rating: 4.2 | — | — | 188 major competitor apps |
| information | 66 | 100 | 52 | 85 121,675 competing apps Median installs: 300 Avg rating: 4.1 | — | — | 1,488 major competitor apps |
| educational | 71 | 100 | 45 | 73 24,502 competing apps Median installs: 300 Avg rating: 4.2 | — | — | 318 major competitor apps |
| age | 73 | 100 | 43 | 66 9,916 competing apps Median installs: 450 Avg rating: 4.2 | — | — | 270 major competitor apps |
| available | 67 | 100 | 54 | 83 95,796 competing apps Median installs: 450 Avg rating: 4.1 | — | — | 2,470 major competitor apps |
| contained | 71 | 100 | 32 | 53 1,439 competing apps Median installs: 350 Avg rating: 4.0 | — | — | 11 major competitor apps |
| patient | 73 | 100 | 39 | 65 7,651 competing apps Median installs: 200 Avg rating: 4.1 | — | — | 38 major competitor apps |
| following | 70 | 100 | 46 | 75 30,546 competing apps Median installs: 450 Avg rating: 4.0 | — | — | 696 major competitor apps |
| across | 69 | 100 | 52 | 77 45,183 competing apps Median installs: 450 Avg rating: 4.3 | — | — | 1,374 major competitor apps |
| higher | 73 | 100 | 42 | 67 10,654 competing apps Median installs: 500 Avg rating: 4.1 | — | — | 282 major competitor apps |
| pressure | 73 | 100 | 39 | 63 6,489 competing apps Median installs: 350 Avg rating: 4.2 | — | — | 148 major competitor apps |
| transfer | 72 | 100 | 45 | 70 16,209 competing apps Median installs: 1,250 Avg rating: 4.1 | — | — | 467 major competitor apps |
| based | 67 | 100 | 50 | 81 79,228 competing apps Median installs: 350 Avg rating: 4.2 | — | — | 1,405 major competitor apps |
| amount | 73 | 100 | 42 | 67 10,958 competing apps Median installs: 450 Avg rating: 4.1 | — | — | 256 major competitor apps |
| normal | 72 | 100 | 39 | 62 5,030 competing apps Median installs: 450 Avg rating: 4.0 | — | — | 98 major competitor apps |
| water | 73 | 100 | 42 | 68 12,462 competing apps Median installs: 400 Avg rating: 4.1 | — | — | 291 major competitor apps |
| sea | 72 | 100 | 38 | 61 4,882 competing apps Median installs: 500 Avg rating: 4.1 | — | — | 122 major competitor apps |
| exchange | 73 | 100 | 42 | 67 10,255 competing apps Median installs: 350 Avg rating: 4.2 | — | — | 209 major competitor apps |
| gas | 72 | 100 | 39 | 59 3,730 competing apps Median installs: 300 Avg rating: 3.9 | — | — | 117 major competitor apps |
| room | 73 | 100 | 44 | 68 12,968 competing apps Median installs: 550 Avg rating: 4.1 | — | — | 398 major competitor apps |
| measure | 73 | 100 | 40 | 66 8,803 competing apps Median installs: 350 Avg rating: 4.1 | — | — | 120 major competitor apps |
| ratio | 71 | 100 | 34 | 54 1,808 competing apps Median installs: 400 Avg rating: 4.1 | — | — | 33 major competitor apps |
App Description
PAO2 = Alveolar oxygen tension
PaO2 = Arterial oxygen tension
A-a oxygen gradient = PAO2 - PaO2.
PaO2 is derived from ABG while PAO2 is calculated.
PAO2 = (FiO2 x [Patm - PH2O]) - (PaCO2 ÷ R)
FiO2 is the fraction of inspired oxygen (0.21 at room air).
Patm is the atmospheric pressure (760 mmHg at sea level).
PH2O is the partial pressure of water (47 mmHg ).
PaCO2 is derived from ABG , and R is the respiratory quotient.
(The respiratory quotient is approximately 0.8 at normal physiological state)
A-a gradient varies with age and can be estimated from the following equation, assuming the patient is breathing room air.
A-a gradient = 2.5 + 0.21 x age in years
A-a gradient increases with higher FiO2.
PaO2/FiO2 ratio — The PaO2/FiO2 ratio is a measure of oxygen transfer across the alveolar capillary membrane . Normal PaO2/FiO2 ratio is 300 to 500 mmHg, with values less than 300 mmHg indicating impaired gas exchange and values less than 200 mmHg indicates severe hypoxemia .
Concept By:
Dr. Satish Deopujari
Dr Vivek Shivhare
Disclaimer: This app is based on equations available publicly in Medical domain. The information contained on this app is intended for educational purposes only. It does not constitute medical advice. You should consult a physician regarding medical diagnosis or treatment.