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Tabla 1: Análisis comparativo de constantes vitales, parámetros bioquímicos, gasométricos y de funcionalidad cardiaca entre pacientes fallecidos y supervivientes a 30 días del ingreso a la Unidad de Cuidados Intensivos. Pacientes críticos sometidos a monitoreo de frecuencia cardiaca (N = 40). |
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Vivos N = 28 Media ± DE |
Fallecidos N = 12 Media ± DE |
p |
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Constantes vitales |
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Edad [años] |
44.2 ± 16 |
33.4 ± 11.7 |
0.062 |
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Índice de masa corporal [kg/m2] |
27.26 ± 6.5 |
29.3 ± 5.5 |
0.347 |
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Presión arterial sistólica (mmHg) |
120.8 ± 15 |
112.5 ± 10 |
0.057 |
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Presión arterial diastólica (mmHg) |
69 ± 9.9 |
64.2 ± 8.5 |
0.131 |
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Presión arterial media (mmHg) |
84.3 ± 11 |
78.5 ± 7 |
0.063 |
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Frecuencia cardiaca (lpm) |
95 ± 22 |
103.6 ± 18.4 |
0.231 |
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Frecuencia respiratoria (rpm) |
19 ± 6 |
18 ± 3 |
0.612 |
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Saturación arterial de oxígeno (%) |
95.5 ± 3.2 |
95.3 ± 2.4 |
0.828 |
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Temperatura (°C) |
37.4 ± 1 |
37.6 ± 1.2 |
0.520 |
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FiO2 (%) |
48.1 ± 17.2 |
54.2 ± 17.4 |
0.321 |
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Parámetros bioquímicos y gasométricos |
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Hemoglobina (gr/dL) |
10.3 ± 2.1 |
10.3 ± 2.4 |
0.988 |
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Hematocrito (%) |
32.3 ± 6.2 |
32.3 ± 7 |
1 |
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Plaquetas (103/μL) |
309,633 ± 182 |
222,250 ± 166 |
0.158 |
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Leucocitos (103/μL) |
38.9 ± 9.8 |
13.8 ± 10.4 |
0.320 |
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Neutrófilos (103/μL) |
12.7 ± 8.5 |
12 ± 9.8 |
0.828 |
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Procalcitonina** (ng/mL) |
0.7 [0.14-24.2] |
2.6 [0.12-25.4] |
0.090 |
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Urea (mg/dL) |
43 ± 24.9 |
83.4 ± 55.8 |
0.032 |
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Creatinina** (mg/dL) |
0.7 [0.52-0.9] |
0.9 [0.75-3.4] |
0.009 |
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Sodio (mg/dL) |
141.3 ± 6.4 |
147.1 ± 6.9 |
0.014 |
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Cloro (mg/dL) |
109.1 ± 7.5 |
114.5 ± 8 |
0.045 |
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Potasio (mg/dL) |
3.9 ± 0.3 |
4.5 ± 1.3 |
0.083 |
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pH |
7.44 ± 0.05 |
7.3 ± 0.07 |
0.003 |
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PaO2 (mmHg) |
87 ± 18.6 |
86.7 ± 36.6 |
0.972 |
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pCO2 (mmHg) |
36.9 ± 7.2 |
37.3 ± 10.1 |
0.443 |
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EB (mmol/L) |
1.16 ± 1.5 |
1.9 ± 2.5 |
0.107 |
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Lactato (mmol/L) |
1.3 ± 0.6 |
2.4 ± 1.7 |
0.078 |
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Variables de la función cardiaca |
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Frecuencia cardiaca media |
100 ± 22 |
98 ± 30 |
0.748 |
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RR |
625.6 ± 141.5 |
690.6 ± 294 |
0.478 |
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SD1 |
34.1 ± 10.9 |
48.2 ± 9.2 |
0.000 |
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SD2 |
65.9 ± 10.9 |
51.8 ± 9.3 |
0.000 |
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Poder LF** |
29.5 [4-78.6] |
2.9 [1.5-35] |
0.115 |
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Poder HF** |
6.7 [1.47-52.4] |
8.6 [3.4-152] |
0.590 |
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Relación LF/HF |
2 ± 0.55-6.8 |
0.36 ± 0.9-0.6 |
0.001 |
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UCI = Unidad de Cuidados Intensivos. EB = exceso de base. LF = baja frecuencia. HF = alta frecuencia. ** mediana [rango]. |
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